Article
Materials Science, Multidisciplinary
Xinda Sun, Xiaojie Hao, Jinfeng Nie, Yong Fan, Yuyao Chen, Sida Liu, Xiangfa Liu, Yonghao Zhao
Summary: In this study, a heterostructured Al-AlN/Al-Mg laminated composite was successfully prepared and its microstructural evolution and mechanical properties were investigated. The results showed that the distribution of AlN particles was optimized to avoid stress concentration and the matrix grains were refined significantly. The composite exhibited enhanced tensile strength and ductility at low temperature due to the hetero-deformation induced stress.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Huajie Wu, Yang Wang, Ruizhi Wu, Feng Zhong, Dan Wang, Legan Hou, Jinghuai Zhang
Summary: Alternative alpha/beta Mg-Li composite sheets with a bimodal-grained structure were prepared by accumulative roll bonding (ARB). The sheets exhibit a balance between dislocation accumulation and annihilation, leading to preferable strength and plasticity after 3-pass ARB process. The strain hardening rate gradually increases at low stress in the ARB composite sheets, which remain highly ductile due to the synergistic effect of bimodal grain structure and activation of non-basal texture.
METALS AND MATERIALS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Zhigang Li, Hao Jiang, Minghui Wang, Hongjie Jia, Hongjiang Han, Pinkui Ma
Summary: An alloy design strategy based on accumulative roll bonding was developed to produce aluminum laminates of similar materials. TRC sheets of the same composition but different cooling rates were roll bonded up to three cycles, showing significant recrystallizations and nano-precipitations that promoted precipitation strengthening. Subsequent aging was conducted for better mechanical properties.
Article
Materials Science, Multidisciplinary
Witold Chrominski, Malgorzata Lewandowska
Summary: Thermo-mechanical treatment is an important tool for designing properties of aluminum alloys. This study investigates a complex procedure to increase the mechanical strength of Al-Mg-Si alloy beyond conventional levels by introducing interlayer boundaries through plastic deformation and healing the microstructure while maintaining deformation-related features. The precipitation processes vary depending on the placement of solution treatment, but the final hardness is always increased compared to typical heat treatment. Observations using transmission electron microscope study the variations in nucleation and growth of strengthening phases.
MATERIALS & DESIGN
(2022)
Article
Nanoscience & Nanotechnology
A. Rezaei, R. Mahmudi, R. E. Loge
Summary: An extruded Mg-6Gd-3Y alloy was processed using SSE to refine its microstructure, resulting in a duplex microstructure with fine DRX grains and deformed grains. EBSD and TEM studies showed a high fraction of LAGBs in the un-DRXed deformed grains and the formation of round Mg5Gd-type nanoparticles in the DRXed regions. Compression testing revealed enhanced yield stress and reduced ductility in the SSE-processed alloy, with a more pronounced stage II of hardening.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Xia Zhou, Yuting Zhao, Xingchi Chen, Zifan Liu, Junlei Li, Yafu Fan
Summary: A novel AZ31B magnesium alloy-based hybrid fiber metal laminates (Mg-FMLs) bonded with Mg-Zn-Al eutectic alloy solder have been prepared using ultrasonic vibration assisted hot pressing technology to enhance interfacial and mechanical properties. The metallurgically-bonded interfaces in the Mg alloy-based hybrid FMLs exhibit higher interlaminar and tensile performance compared to traditional epoxy resin-bonded Mg-FMLs. The synergistic effect from the Mg alloy sheet and CFRP layer contributes to the enhanced tensile properties of the Mg-FMLs.
MATERIALS & DESIGN
(2021)
Article
Engineering, Mechanical
Morteza Alizadeh, Faramarz Vahdatinejad, Shima Pashangeh
Summary: In this research, Al/5Zn/1Mg composite sheets were produced by the ARB process and transformed into Al-5Zn-1Mg alloy sheets through a heat treatment process. Structural investigations using SEM, EDS, and XRD showed the distribution of Zn layers and Mg powder particles in the Al matrix, as well as the formation of the alpha phase. Tensile and microhardness measurements demonstrated the improvement in mechanical properties with increasing ARB cycles.
ENGINEERING FAILURE ANALYSIS
(2023)
Article
Nanoscience & Nanotechnology
Huajie Wu, Feng Zhong, Ruizhi Wu, Yang Wang, Dan Wang, Xiaochun Ma, Siyuan Jin, Shun Zhang, Legan Hou, Jinghuai Zhang
Summary: In this study, alpha/beta alternative Mg-Li composite sheets with different initial thickness ratio of alpha to beta (H) were prepared using accumulative roll-bonding (ARB). The hard layer necking, microstructure evolution, and strain hardening sequence of the alpha/beta alloys in the composite sheets during the ARB process were investigated. The results showed that increasing H can alleviate the necking of the LA51 layer and refine the grains of the two alloys. With the increase of ARB passes and H, the strength of the composite sheets first increased and then decreased, while the plasticity decreased first and then increased.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Masood Khani, Gholamreza Ebrahimi, Hamidreza Ezatpour
Summary: In this study, a magnesium alloy composite reinforced with fluorapatite and graphene nanoplate was produced through accumulative extrusion bonding (AEB) process. The addition of reinforcements improved the tensile strength and corrosion behavior of the alloy, as well as the uniformity of grain size.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Sayyed Ali Mortazavi, Mehdi Raeissi, Hassan Sharifi, Navid Saeidi, Hadi Pirgazi
Summary: A multi-layered composite of copper/brass was fabricated using the APB process with up to three cycles, resulting in controlled grain sizes for the copper and brass layers. The microstructure of the copper layer exhibited a bimodal grain structure, while the mechanical properties of the composite continued to improve with each cycle of the APB process, reaching significantly higher values than the initial pure copper material.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Matthew R. Standley, Zahidul Sarkar, Ethan E. Costa, Marko Knezevic
Summary: Accumulative extrusion bonding (AEB) is a novel process for manufacturing ultrafine-laminated bimetallic tubes. This study presents the main results of using AEB to bond Cu-Cu bimetallic tubes, including the evolution of interface crystallography and integrity, grain structure, crystallographic texture, and tensile strength. The results show that AEB can achieve stable bonding at room temperature, with significantly increased yield strength in the axial direction.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Xiang Chen, Baoxuan Zhang, Qin Zou, Guangsheng Huang, Shuaishuai Liu, Junlei Zhang, Aitao Tang, Bin Jiang, Fusheng Pan
Summary: This paper presents the fabrication of sandwich-structured pure aluminum laminates and investigates the mechanical differences resulting from microstructure heterogeneities at the hetero-interface. The annealing process is controlled to obtain a larger degree of heterogeneities, which contribute to higher tensile ductility and strength. The study also reveals the significant strain gradient and the involvement of geometrically necessary dislocations, which contribute to the hetero-deformation induced strengthening and hardening.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Adil Mansoor, Wenbo Du, Zijian Yu, Ke Liu, Ning Ding, Junjian Fu, Feng Lou, Shubo Li
Summary: This study focuses on the effects of rare earth (RE = Gd and Er) contents on the microstructural evolution and mechanical performance of Mg-Gd-Er-Zr alloys. The results show that the grain size decreased significantly and a large amount of fine Mg5RE particles were formed after double-pass extrusion in the Mg-14Gd-2Er-0.4Zr alloy. The Mg5RE particles larger than 1 um contribute to increasing the dynamic recrystallization fraction, while the finer ones exert a strong pinning effect on grain boundaries. Additionally, the volume fraction of beta' precipitates increases with increasing RE content in the matrix.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Bowei Yang, Minqiang Gao, Li Yang, Bing Li, Renguo Guan
Summary: In this study, the microstructural evolution of Al-5Mg alloy fabricated by accumulative continuous extrusion forming (ACEF) at room temperature (RT) and cryogenic temperature (CT) was investigated. The grain refinement mechanism during ACEF was revealed, and the strengthen and ductility enhancements of the alloy were discussed. The results showed that good grain refinement effect was achieved in the alloy after multi-pass RT-ACEF, and was further enhanced in the alloy fabricated by 1 pass CT-ACEF. The ultimate tensile strength and elongation were enhanced to 294.3 MPa and 55.1% of the alloy after 1 pass CT-ACEF. Grain boundary strengthening and dislocation strengthening dominated the strength enhancement, and the high work hardening exponent and wide strain interval were responsible for the increase in ductility. The purpose of this study is to provide a high-efficiency strategy to achieve Al-Mg alloys with superior mechanical performance and overcome the strength-ductility trade-off. © 2023 Elsevier B.V. All rights reserved.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Ye Wang, Feng Li, Nan Bian, Xing Mao Xiao
Summary: This paper discusses improvements to the AABE process, including water-quench and preheating steps to address temperature-drop issues and die gap feeding, as well as the investigation of the effects of extrusion cycles on grain refinement and crystal orientation. The study also explores the mechanical properties of materials through compression experiments and shows that increasing extrusion cycles can refine grain size and improve mechanical properties. Additionally, the deformation behavior of AABE and its impact on material strength and plasticity were analyzed, providing insights into microstructure properties in magnesium alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Qun Luo, Xingrui Li, Qian Li, Lingyang Yuan, Liming Peng, Fusheng Pan, Wenjiang Ding
Summary: The addition of La element to Al-Si alloy has significant improvement effects, achieving refinement of α-Al grains and modification of eutectic Si simultaneously.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Yi Liu, Bo Gao, Ming Yang, Lirong Xiao, Jiaxin Wang, Jiaxin Ma, Xiangjie Chen, Hao Zhou, Yuntian Zhu
Summary: The improvement of strength in low-carbon steel usually leads to a reduction in ductility due to the low strain-hardening rate of ultrafine-grained materials. The heterostructured strategy, achieved through phase transformation, offers a new way to enhance the strain-hardening rate. In this study, intercritical annealing was used to produce a dual-phase heterostructure in low-carbon steel, leading to improved strength and ductility. The presence of ferrite and martensite in the heterostructured steel resulted in a higher density of low-angle grain boundaries and geometrically necessary dislocations, promoting strain partitioning and ultimately improving the combination of strength and ductility.
Article
Chemistry, Multidisciplinary
Yanning Chen, Liang Wu, Wenhui Yao, Jiahao Wu, Yuan Yuan, Bin Jiang, Fusheng Pan
Summary: The MgAl Layered double hydroxides (LDHs)/graphene oxide (GO) composite film was synthesized in situ on the micro-arc oxidation (MAO) film of AZ31 magnesium alloy using hydrothermal chemical conversion method. The growth behavior and corrosion properties of the composite film were investigated. The results showed that the composition and morphology of the composite film changed gradually with the extended hydrothermal treatment time, utilizing the self-dissolved cation in the MAO film as the LDHs source. The MAO/LG-12 h coating exhibited higher corrosion resistance (1.28 x 10-9 A/cm2) compared to the MAO coating (8.49 x 10-6 A/cm2), thanks to the synergistic effect of GO and LDHs.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
X. X. Dong, Y. F. Shen, Y. T. Zhu
Summary: A principle is proposed and verified that an optimized moderate strain hardening rate is desired for producing the best mechanical properties for metallic materials. It is demonstrated that moderate strain hardening rate is desired for better ductility and high yield strength in a medium carbon TRIP steel. By adjusting the temperature for bainitic transformation, the TRIP kinetics were tailored to produce moderated but long-lasting strain hardening for high ductility and high yield strength.
MATERIALS RESEARCH LETTERS
(2023)
Article
Construction & Building Technology
Danqian Wang, Sanlve Pei, Ye Wang, Kai Ma, Chaoneng Dai, Jinxing Wang, Jingfeng Wang, Fusheng Pan
Summary: The effect of the magnesium-to-phosphate (M/P) ratio on the corrosion resistance of magnesium alloys embedded in magnesium phosphate cement pastes was investigated. The results showed that the corrosion resistance of magnesium alloys increased with an increased M/P ratio. The pH value played a dominant role in the protective capability of the oxide film formed on the magnesium alloy.
CEMENT & CONCRETE COMPOSITES
(2023)
Article
Engineering, Environmental
Lei Liu, Jinglei Lei, Ting Liu, Bo Shang, Xingwang Zhao, Jianxin He, Fusheng Pan, Lingjie Li
Summary: In this work, an artificial skin with fast and robust self-healing ability was designed and fabricated to provide durable intelligent protection for magnesium alloys. The artificial skin consists of a hydrothermal film layer made of magnesium (hydr)oxides and a polymer film layer made of polyethyleneimine (PEI) and polyacrylic acid (PAA). It can heal cuts of 25 μm-120 μm within 25 minutes under moist atmosphere, and shows exceptional self-healing robustness to various severe damage.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Electrochemistry
Xiaoyang Dong, Jinxing Wang, Jingdong Yang, Xiao Wang, Junyao Xu, Xiaofang Yang, Wen Zeng, Guangsheng Huang, Jingfeng Wang, Fusheng Pan
Summary: In this study, rutile-type molybdenum dioxide (R-MoO2) was synthesized and used as the cathode materials in both Mg-ion batteries (MIBs) and hybrid Mg/Li-ion batteries (MLIBs). The electrochemical performance of MLIBs was greatly enhanced compared to MIBs, and the energy storage mechanism involved Mg2+ intercalation in MIBs and Mg2+/Li+ co-intercalation in MLIBs. This research further explores the energy storage mechanism of MLIBs and lays the theoretical foundation for the development of high-performance cathode materials.
ELECTROCHIMICA ACTA
(2023)
Article
Nanoscience & Nanotechnology
Zhihong Cui, Xuefeng Lu, Jingren Dong, Yuping Liu, Hong Chen, Changguo Chen, Jingfeng Wang, Guangsheng Huang, Dingfei Zhang, Fusheng Pan
Summary: The low specific capacity and Mg non-affinity of graphite limit the energy density of ion rechargeable batteries. In this study, we identify that the monolayer C12-3-3 in sp2-sp3 carbon hybridization with high Li/Mg affinity is a suitable anode material for Li-ion batteries and Mg-ion batteries. The monolayer C12-3-3 exhibits high specific capacities for Li and Mg, surpassing most previous anodes. The 2D carbon material of C12-3-3 also demonstrates rapid diffusion kinetics, making it a promising choice for high-capacity and high-rate performance batteries.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Senwei Wang, Kunming Zhang, Sihui Ouyang, Chengao Du, Xiong Wu, Aitao Tang, Jia She, Fusheng Pan
Summary: A highly homogeneous fine-grained Mg-3Al-1Zn (AZ31) alloy was successfully fabricated using a simple extrusion method called pre-die forging extrusion (PFE). The strain induced by the pre-forging process led to crystal defects and a higher driving force for dynamic recrystallization. By using PFE for 60 s at 300 degrees C (300-60 s), the grain size of the AZ31 alloy was significantly refined to 1.74 mu m. The 300-60 s samples exhibited excellent mechanical properties with a tensile yield strength of 305 MPa and an elongation of 27%. The improvement in the mechanical properties of the PFE samples is mainly attributed to the grain refinement mechanism. This study provides an experimental basis for determining the appropriate temperature to refine the grains during extrusion.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Nanoscience & Nanotechnology
Yuhan Wang, Yanxiong Ren, Yu Cao, Xu Liang, Guangwei He, Hanze Ma, Hongliang Dong, Xiao Fang, Fusheng Pan, Zhongyi Jiang
Summary: For the first time, the utilization of HOF-based mixed-matrix membrane for CO2 separation was demonstrated. HOF-21, a unique metallo-hydrogen-bonded organic framework material, was uniformly dispersed with Pebax polymer to form nanofillers via amine modulator. The resulting HOF-21 mixed-matrix membrane exhibited excellent stability under humid feed gas and surpassed the 2008 Robeson upper bound in terms of permeability and selectivity.
NANO-MICRO LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Xu Chen, Jianbo Li, Yitao Wang, Huan Luo, Bo Guan, Xianhua Chen, Kaihong Zheng, Fusheng Pan
Summary: A titanium particle-reinforced AZ91 matrix composite (Tip/AZ91) was prepared by powder metallurgy method. The hot deformation behavior of the Tip/AZ91 composite was investigated through isothermal compression tests. Microstructure observations showed a uniform distribution of titanium particles in the composite, with a diffusion layer containing magnesium, titanium, and aluminum elements between the particles and the magnesium matrix. The deformation mechanism was dominated by dislocation climb, and the presence of a particle deformation zone was observed.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Cuihong Wang, Zhihua Dong, Bin Jiang, Zengyong Zheng, Sujuan Wu, Jiangfeng Song, Ang Zhang, Junyao Xu, Baoqing Yang, Changyong Zheng, Fusheng Pan
Summary: The study investigates the influence of Ca on the thermal expansion and mechanical properties of Mg. It is found that alloying Ca can significantly decrease the coefficient of thermal expansion (CTE) and increase the strength of Mg. The low CTE and high compressive yield strength achieved in Mg-Ca alloys are closely related to the increased precipitation of Mg2Ca phase, which has high melting point, elastic/shear moduli and low CTE. The increased fraction of the eutectic lamellar structure consisting of Mg2Ca and a-Mg also contributes to the noticeable increase of strength in the as-cast Mg-Ca alloys.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Chemical
Zhiming Zhang, Hong Wu, Li Cao, Meidi Wang, Hongjian Wang, Fusheng Pan, Zhongyi Jiang
Summary: Graphene oxide (GO) lamellar membranes suffer from low flux and poor stability for practical applications due to tortuous transport pathways and weak interlamellar interactions. In this study, porous vermiculite (PVMT) nanosheets were incorporated into the GO-based membranes to establish fast and robust water-selective pathways. PVMT nanosheets provided in-plane pores, reducing the tortuosity and mass transport distance. The hydrophilicity and interlayer distance were enhanced by PVMT nanosheets, contributing to water-selective transport. The resulting membranes exhibited excellent dehydration performance with increased permeation flux and separation factor compared to pristine GO/PTFE membranes, while maintaining stability for 192 h operation. This study may inspire further research in constructing mass-transfer pathways within lamellar membranes.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Jin Du, Shuwei Liang, Meidi Wang, Yuhan Wang, Tianpei Yi, Zhiming Zhang, Fusheng Pan, Zhongyi Jiang
Summary: Cu-TAPB-COF nanosheets were synthesized and introduced into Pebax®2533 matrix to construct facilitated transport membranes for toluene/n-heptane mixtures. The Cu-TAPB-COF nanosheets provided continuous low mass transfer resistance channels and uniformly distributed facilitated transport sites. The resulting membrane exhibited higher adsorption selectivity and lower swelling degree compared with pure Pebax membrane. It showed high pervaporation separation performance for the toluene/n-heptane mixture.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Review
Chemistry, Physical
Qingshan Yang, Dan Zhang, Peng Peng, Guobing Wei, Jianyue Zhang, Bin Jiang, Fusheng Pan
Summary: Magnesium alloy is a widely used lightweight metal material with high specific strength and stiffness. Improving the room temperature forming performance of Mg alloy sheets through extrusion technology is crucial. Our research group has developed a new asymmetric extrusion technology and elucidated the process characteristics, texture control mechanism, and forming properties of Mg alloy sheets. The findings present an innovative extrusion technology for highly formable Mg alloy sheets. Evaluating the importance of this study: 8 points
Article
Nanoscience & Nanotechnology
Ahmad Mirzaei, Peter D. Hodgson, Xiang Ma, Vanessa K. Peterson, Ehsan Farabi, Gregory S. Rohrer, Hossein Beladi
Summary: This study investigated the influence of parent austenite grain refinement on the intervariant boundary network in a lath martensitic steel. It found that refining the parent austenite grain led to a decrease in the fraction of certain boundaries in the martensite and an increase in the connectivity of low energy boundaries, ultimately improving the impact toughness.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
N. L. Church, C. E. P. Talbot, L. D. Connor, S. Michalik, N. G. Jones
Summary: Metastable beta Ti alloys based on the Ti-Nb system have attracted attention due to their unique properties. However, the unstable cyclic behavior of these alloys has hindered their widespread industrial use. Recent studies have shown that internal stresses, including those from dislocations, may be responsible for this behavior. This study demonstrates that inter-cycle thermal treatments can mitigate the unstable cyclic behavior, providing a significant breakthrough in our understanding of Ti-Nb superelastic materials.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Di Zhao, Chenchen Zhao, Ziyang Xiu, Jiuchun Yan
Summary: This study proposes a novel strategy for achieving the bonding of SiC ceramic and Al alloy using ultrasound. The ultrasound promotes the dissolution of Al into the solder, activating the solder and triggering the interfacial reaction between SiC ceramic and solder. With increasing ultrasonic duration, the bonding between SiC and Al transitions from partial to full metallurgical bonding.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Kang Du, Yang Zhang, Guangda Zhao, Tao Huang, Liyuan Liu, Junpeng Li, Xiyu Wang, Zhongwu Zhang
Summary: This paper systematically investigated the evolution of microstructure in Fe-Ni-Co-Al polycrystalline alloys and its effects on mechanical properties. The results revealed that the migration of grain boundaries in different processes is driven by different factors, which impacts the grain orientation and precipitate formation. In the process of directional recrystallization, grains with specific orientations grow in the grain boundary region and form the dominant orientation, while grains with lower migration rate form the minor orientation. The alloy produced through directional recrystallization exhibited good recoverable strain and superelastic strain, while the alloy produced through solid solution treatment showed no evident superelastic behavior.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Edohamen Awannegbe, Liang Chen, Yue Zhao, Zhijun Qiu, Huijun Li
Summary: This study employed laser metal deposition to additively manufacture Ti-15Mo wt% alloy, and subsequently subjected it to post-fabrication uniaxial thermomechanical processing. The results showed that different zones in the microstructure remained after processing, and deformation mechanisms mainly involved slip and martensite formation. The compressive mechanical properties were found to be dependent on strain rate, with higher flow stress and compressive strength observed at higher strain rates. Grain structure homogenisation was not achieved, leading to anisotropic tensile properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Reza Khatib Zadeh Davani, Enyinnaya George Ohaeri, Sandeep Yadav, Jerzy A. Szpunar, Jing Su, Michael Gaudet, Muhammad Rashid, Muhammad Arafin
Summary: This research aims to investigate the effect of roughing and finishing reductions on crystallographic texture. The results show significant heterogeneity in the centerline region, with higher intensity of certain textures. Drop Weight Tear Test indicates that steel specimens with lower and medium reductions exhibit superior low-temperature impact toughness compared to steel with higher reductions. The electrochemical hydrogen charging experiments confirm the presence of internal hydrogen cracks only in steel with lower and medium reductions.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Flavio De Barbieri, Denis Jorge-Badiola, Rodrigo Allende, Karem Tello, Alfredo Artigas, Franco Perazzo, Henry Jami, Juan Perez Ipina
Summary: This study examines the effect of Cr additions on the mechanical behavior of TWIP steel at temperatures ranging from 25°C to 350°C. The results indicate that different temperature-dependent strengthening mechanisms, including mechanical twinning, Dynamic Strain Aging, and slip bands, are at play. The stacking fault energy (SFE) influences the percentage of mechanical twinning, which in turn affects the strain hardening rate.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Hanlin Peng, Siming Huang, Ling Hu, Bingbing Luo, Liejun Li, Ian Baker
Summary: This study explores the weldability, microstructures, and mechanical properties of two L1(2)-nanoparticle-strengthened medium-entropy alloys after electron beam welding (EBW). The results show that strong yet ductile defect-free joints were produced, with larger grain sizes in the fusion zones compared to the heat-affected zones and base materials. Both EBWed MEAs exhibited high yield strengths, high ultimate tensile strengths, and good fracture strains at 77 K. The V-doping improved the cryogenic mechanical properties of the TMT MEA.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Yongxin Wang, Lei Chen, Lizi Shao, Shuo Hao, Motomichi Koyama, Xingzhou Cai, Xiaocong Ma, Miao Jin
Summary: This study investigated the tensile deformation behavior of an Mn-N bearing lean duplex stainless steel with metastable austenite. The results showed that the strain rate had significant influence on the work hardening, strain-induced martensitic transformation, and fracture mechanism.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Jong Woo Won, Seulbi Lee, Hye-Jeong Choe, Yong-Taek Hyun, Dong Won Lee, Jeong Hun Lee
Summary: Cold-rolled pure titanium showed improved sheet formability after undergoing cryogenic-deformation treatment. This treatment increased the thinning capability of the titanium and suppressed cracking during sheet forming. The formation of twins during deformation contributed to high thinning capability and increased strength through grain refinement and dislocation accumulation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Handong Li, Lin Su, Lijuan Wang, Yanbin Jiang, Jiahui Long, Gaoyong Lin, Zhu Xiao, Yanlin Jia, Zhou Li
Summary: Homogenization heat treatment is a key procedure in controlling the second phase, enhancing composition uniformity, and workability of as-cast Cu-15Ni-8Sn alloy. This study found that electropulsing treatment (EPT) can significantly reduce treatment temperature and time, improve elongation and overall mechanical properties of the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Yuxuan Wang, Juntao Zou, Lixing Sun, Yunfei Bai, Zhe Zhang, Junsheng Cheng, Lin Shi, Dazhuo Song, Yihui Jiang, Zhiwei Zhang
Summary: A novel mechanical-heat-electricity synergistic method was proposed to enhance the mechanical properties of Cu-15Sn-0.3Ti alloy by forming annealing twins (ATs). The combination method of Rotary swaging (RS) and Electric pulse treatment (EPT) successfully induced recrystallization and refinement of the microstructure, leading to a significant increase in the strength of the alloy within a short time.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Zhiyi Ding, Jiangtao Xie, Tong Wang, Aiying Chen, Bin Gan, Jinchao Song
Summary: This study demonstrated the Ta-induced strengthening of CoCrNi-AlTi MEAs using nanoscale heterogeneous coherent precipitates. The addition of Ta and aging treatments significantly enhanced the mechanical properties of the alloy, including yield strength, ultimate tensile strength, and elongation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Z. Y. You, Z. Y. Tang, B. Wang, H. W. Zhang, P. Li, L. Zhao, F. B. Chu, H. Ding
Summary: The mechanical properties and microstructural evolution of C-doped TRIP-assisted HEA under dynamic loading conditions were systematically investigated in this study. The results showed that dynamic tensile deformation led to an increase in yield strength and a decrease in ultimate tensile strength, with a trend towards increased total elongation. The primary deformation mechanisms shifted from TRIP and TWIP effects to deformation twinning and dislocations. The presence of carbides formed through C-doping hindered dislocation slip and promoted the activation of multiple twinning systems.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Nanoscience & Nanotechnology
Feng Qin, Feihu Chen, Junhua Hou, Wenjun Lu, Shaohua Chen, Jianjun Li
Summary: Plastic instability in strong multilayered composites is completely suppressed by architecting nanoscale BCC Nb crystalline-amorphous CuNb interfaces.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
