Article
Materials Science, Composites
J. H. Zhang, K. B. Nie, K. K. Deng, J. G. Han, J. Y. Yi
Summary: The TiCnp/Mg-2Zn-0.8Sr-0.2Ca magnesium matrix composite processed by multidirectional forging (MDF) and extrusion (EX) exhibited ultrahigh mechanical properties, with the main contributors to the substantial increase in strength being grain boundary strengthening effect, dislocation strengthening effect, and Orowan strengthening effect inspired by dynamically precipitated MgZn2 phases and TiCnp.
COMPOSITES COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Zedong Wang, Kaibo Nie, Kunkun Deng, Jungang Han
Summary: A low-alloyed Mg-2Zn-0.8Sr-0.2Ca matrix composite reinforced by TiC nano-particles was successfully prepared by semi-solid stirring under the assistance of ultrasonic, and then the as-cast composite was hot extruded. The finest grain size of similar to 0.30 mu m is obtained in the sample extruded at 200 degrees C and 0.1 mm/s. The ultra-high mechanical properties (ultimate tensile strength of 480.2 MPa, yield strength of 462 MPa) are obtained after extrusion at 200 degrees C with a rate of 0.1 mm/s. Among all strengthening mechanisms for the present composite, the grain refinement contributes the most to the increase in strength. A mixture of cleavage facets and dimples were observed in the fracture surfaces of three as-extruded nanocomposites, which explain a mix of brittle-ductile fracture way of the samples.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Wei Li, Kaibo Nie, Zhilong Liu, Kunkun Deng, Yanan Li, Xili Tong
Summary: The addition of SiC nanowires affected the microstructure and mechanical properties of Mg-2Zn-0.1Y matrix composites under different hot extrusion parameters. Stengthening mechanism was analyzed and the results showed significant changes in grain size and volume fraction with variations in extrusion temperature and speed.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Dong Hee Lee, Sang-Hoon Kim, Hyun Ji Kim, Byoung Gi Moon, Young Min Kim, Sung Hyuk Park
Summary: The extrusion speed has a significant impact on the microstructure and tensile properties of the AZXWMM91100 alloy. As the extrusion speed increases, the grain size gradually increases, leading to a decrease in tensile strength and a fluctuation in elongation.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Metallurgy & Metallurgical Engineering
Dong Hee Lee, Ye Jin Kim, Sang-Hoon Kim, Byoung Gi Moon, Sung Hyuk Park
Summary: This study systematically analyzes the extrusion behavior, microstructure, and tensile properties of an AZXWMM91100 alloy with high corrosion resistance, ignition resistance, and extrudability. The extrusion limit diagram is established to provide a safe processing zone, and it is found that the materials within this zone have good surface quality and tensile ductility.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Metallurgy & Metallurgical Engineering
Kai Guan, Rui Ma, Jinghuai Zhang, Ruizhi Wu, Qiang Yang, Jian Meng
Summary: The microstructure and tensile properties of a Mg-Sm-Zn-Zr alloy with various extrusion ratios were systematically investigated. It was found that a greater extrusion ratio led to increased dynamic recrystallization and weakened basal fiber texture, resulting in decreased strength but improved ductility. Additionally, TEM observations revealed the transformation of the dominant intermetallic phase during extrusion with high extrusion ratio.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Chemistry, Physical
Xiong Zhou, Qichi Le, Ruizhen Guo, Chenglu Hu, Tong Wang, Chunming Liu, Dandan Li, Xiaoqiang Li, Wenxin Hu
Summary: The study found that increasing the extrusion speed can improve the homogeneity of the microstructure and work hardening capacity of the MgAlCoCrFeNi alloy, while lower extrusion speed can enhance the yield strength of the alloy. The improvement in work hardening ability was mainly attributed to the increase in dislocation storage rate caused by grain coarsening.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Zuo Xu, Lixin Huang, Meng Li, Zhihua Zhu, Chunhai Liu
Summary: The influence of Mg17Al12 phase morphology on the mechanical properties of AZ80 magnesium alloy has been studied. The results show that the morphology of Mg17Al12 phase varies with aging temperature, which affects the strength and elongation of the alloy.
Article
Materials Science, Multidisciplinary
Abdollah Bahador, Ayhan Yurtsever, Astuty Amrin, Shota Kariya, Junko Umeda, Jianghua Shen, Biao Chen, Takeshi Fukuma, Katsuyoshi Kondoh
Summary: This study aimed to develop novel titanium matrix composites (TMCs) with high strength utilizing powder metallurgy and extrusion techniques. The TiC particle dispersion was similar in both composites, but there was a significant difference in the morphology of the matrix phase. The b phase exhibited improved strength at high temperatures and was slightly harder than the a phase due to the solid solution of Fe and W.
MATERIALS & DESIGN
(2022)
Review
Metallurgy & Metallurgical Engineering
K. B. Nie, X. J. Wang, K. K. Deng, X. S. Hu, K. Wu
Summary: Significant progress has been made in magnesium matrix nanocomposites in recent decades, with excellent mechanical properties that effectively balance the contradiction between strength and plasticity. However, dispersing nanoparticles in metal melts, especially in magnesium melts, is extremely challenging, and magnesium matrix nanocomposites have distinctive characteristics and size effects.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Materials Science, Multidisciplinary
Ruizhen Guo, Qichi Le, Weiyang Zhou, Tong Wang, Liang Ren, Yanchao Jiang, Qi Zou, Qiyu Liao, Fuxiao Yu, Clodualdo Aranas Jr
Summary: This study reports the fabrication of Mg-3Y-xSiCp (x = 0, 1, 3, 5 wt%) composites by stir casting with ultrasonic vibration followed by extrusion. The addition of SiCp promotes grain refinement and inhibits dynamic recrystallization, resulting in smaller grain size and decreased recrystallization proportion. The composites exhibit higher ultimate tensile strength and yield strength due to the combination of grain refinement and dislocation strengthening.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Multidisciplinary
Yunpeng Ding, Sijia Jiao, Yizhuang Zhang, Zhiai Shi, Jinbiao Hu, Xulei Wang, Zhiyuan Li, Hanying Wang, Xiaoqin Guo
Summary: Carbon nanotube-reinforced magnesium matrix (CNTs/Mg) composite has great potential in the transportation industry, but the trade-off between strength and ductility inhibits its widespread application. By introducing large-size AZ61 particles as a soft phase, the strength and plasticity of the composite can be balanced, leading to an increase in fracture strain and compressive strength.
Article
Engineering, Manufacturing
A. K. Lakshminarayanan, S. Ramachandran, B. Rajabharathi, W. Mirihanage
Summary: Friction Stir Back Extrusion (FSBE) is being developed as a novel extrusion process for producing high strength ultrafine-grained tubes from various metallic alloys. A high-fidelity experimental methodology was developed to control the critical process parameters of the FSBE process for manufacturing high strength ZE41 magnesium alloy tubes. Through thorough experimental trials on ZE41 magnesium round rods, crucial parameters for producing highly reliable ZE41 tubes were determined, leading to defect-free high strength tubes with significant grain refinement.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Materials Science, Multidisciplinary
Lipeng Yan, Quanan Li, Limin Zhu, Xiaoya Chen, Laidong Yang, Jun Chen, Wuhui Li
Summary: The study investigated the tensile properties and microstructure changes of the GW84 alloy during hot extrusion at different temperatures. It was found that the alloy exhibited excellent high temperature mechanical properties, with the ultimate tensile strength peaking at 393 MPa at 250 degrees C. The microstructure of the alloy underwent significant changes during the high temperature tensile process, including phase transformations and increased precipitation at higher temperatures.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Physical
Z. Y. Xu, C. F. Fang, R. Wang, Ch Y. Zhong, Y. M. Wang
Summary: The in-situ TiB2/AZ80 composite was prepared by a simple casting method and hot-rolling, which showed improved strength and toughness. The TiB2 particles can refine the grains of AZ80 alloy and promote recrystallization through PSN effect, leading to a transformation in recrystallization mode and distribution characteristics of TiB2 particle clusters. The composite sheet mainly gains strength from fine grain strengthening and thermal mismatch strengthening, while internal toughening mechanisms include texture weakening and the proliferation of more dislocations induced by the PSN effect. External toughening mechanisms are attributed to bending and deflection of cracks resulting from fiber-like particle distribution characteristics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Xin Lv, Kun-Kun Deng, Cui-Ju Wang, Kai-Bo Nie, Quan-Xin Shi, Wei Liang
Summary: The addition of trace submicron SiC particles can promote the formation of lamellar (α+β) structure and improve the corrosion resistance of the alloy. However, the precipitation of granular β-Mg17Al12 phase with increased SiCp content leads to a gradual decrease in corrosion resistance.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Zedong Wang, Kaibo Nie, Kunkun Deng, Jungang Han
Summary: A low-alloyed Mg-2Zn-0.8Sr-0.2Ca matrix composite reinforced by TiC nano-particles was successfully prepared by semi-solid stirring under the assistance of ultrasonic, and then the as-cast composite was hot extruded. The finest grain size of similar to 0.30 mu m is obtained in the sample extruded at 200 degrees C and 0.1 mm/s. The ultra-high mechanical properties (ultimate tensile strength of 480.2 MPa, yield strength of 462 MPa) are obtained after extrusion at 200 degrees C with a rate of 0.1 mm/s. Among all strengthening mechanisms for the present composite, the grain refinement contributes the most to the increase in strength. A mixture of cleavage facets and dimples were observed in the fracture surfaces of three as-extruded nanocomposites, which explain a mix of brittle-ductile fracture way of the samples.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Hongwei Li, Kaibo Nie, Zhilong Liu, An Yang, Kunkun Deng
Summary: TiCp/Mg-Al-Ca-Mn nanocomposites were produced through extrusion, which resulted in refined grains and changes in the second phase. The composites exhibited specific texture composition and their properties were influenced by the degree of dynamic recrystallization and precipitates. The nanocomposites showed excellent mechanical properties, which were enhanced by various strengthening mechanisms.
Article
Materials Science, Multidisciplinary
Shilei Wang, Kaibo Nie, An Yang, Kunkun Deng
Summary: The influence of different Ca/Al mass ratios on the microstructure, phase evolution, and mechanical properties of Mg-Al-Ca-Mn alloys was investigated. It was found that increasing the Ca/Al ratio led to the transformation of the secondary phases and refinement of the grain size. The secondary phases not only refined the grains but also hindered dislocation migration, resulting in the strengthening of the alloy.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Nanoscience & Nanotechnology
Mei-li Hou, Kun-kun Deng, Cui-ju Wang, Kai-bo Nie, Quan-xin Shi
Summary: The effects of the VR/VD ratio on the work hardening and softening behaviors of Mg-6Zn-1Gd-0.12Y alloy were studied. It was found that increasing the VR/VD ratio reduced the work hardening rate in stage III, while increasing it in stage IV. A low VR/VD ratio improved the work hardening rate in stage III, while a high VR/VD ratio improved it in stage IV. With an increased VR/VD ratio, the softening behavior of the alloy increased in stage III and decreased and then increased in stage IV.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Yu Liu, Kun-kun Deng, Xuan-chang Zhang, Cui-ju Wang, Kai-bo Nie, Wei-min Gan, Quan-xin Shi
Summary: In this study, laminates composed of different thickness ratios of alloy layers and composite layers were fabricated, and their microstructure and mechanical properties were investigated. The results show that increasing the thickness ratio improves the strength of the composite, but sacrifices its ductility. The alloy layer plays an important role in alleviating stress concentration and coordinating the deformation of the composite layer. The fracture behavior of the composite is influenced by the thickness ratio and the grain sizes of the layered structure.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Electrochemistry
Xin Lv, Kunkun Deng, Cuiju Wang, Kaibo Nie, Quanxin Shi, Haoyi Niu
Summary: Through immersion, electrochemical, and Mg-air battery tests on extruded AZ91 alloy and 0.5 μm SiCp (0.5 vol.%)/AZ91 composite, it is found that the introduction of submicron SiCp can reduce the corrosion rate and improve the discharge performance of the alloy. This improvement is attributed to the refined grains, precipitates, and weakened basal texture resulting from the addition of submicron SiCp. This study provides new ideas for achieving the synergistic improvement of corrosion resistance and discharge performance of magnesium alloy.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Quanxin Shi, Cuiju Wang, Kunkun Deng, Kaibo Nie, Wei Liang
Summary: The influence of minor SiC particles on the dynamic recrystallization and dynamic precipitation behaviors of the Mg-5Zn matrix were investigated. The results showed that the addition of SiC particles can improve the dynamic recrystallized ratio of the Mg-5Zn matrix. At low compressive strains, recrystallized grains were mainly formed by bulging nucleation of the grain boundary, and the particle deformation zone around SiC particles had little effect on recrystallization nucleation. However, at higher compressive strains, fine recrystallized grains appeared around the particles due to the promotion effect of the particle deformation zone. Additionally, the volume fraction and size of the secondary phase in the SiC/Mg-5Zn material increased compared to the Mg-5Zn alloy due to the influence of SiC particles on the recrystallization behavior of the matrix.
Article
Materials Science, Composites
Li Zhang, Kun-kun Deng, Kai-bo Nie, Cui-ju Wang, Chao Xu, Quan-xin Shi
Summary: GFs/ZX50 (graphite flakes/Mg-5Zn-0.5Ca) composites were successfully fabricated by ultrasonic-assisted semi-solid stirring followed by extrusion process. The microstructure observation shows that hot extrusion effectively regulates the orientation of GFs. The GFs/ZX50 composites exhibit excellent thermal conductive property of -145.6-174.2 W/(m center dot K) and high yield strength of -386.8-407.8 MPa. The excellent strength-thermal conductivity synergy of the composites is mainly attributed to the highly orientated GFs, the clean Mg-graphite interface, the ultrafine grains, and the MgZn2 nano-precipitates.
COMPOSITES COMMUNICATIONS
(2023)
Article
Engineering, Manufacturing
Jianchao Li, Xuexi Zhang, Mingfang Qian, Zhenggang Jia, Muhammad Imran, Lin Geng
Summary: The difficulty in balancing the structural damage and dispersion of graphene nanoplates (GNPs) during ball milling process has hindered the development of high-performance GNPs/Al composites in large-scale production. A proposed strategy of controlling the relative size between GNPs lateral size and Al powder diameter was effective in inhibiting GNPs breakage during the ball milling process. The mechanical properties of GNPs/Al composites were influenced by the lateral size and defect density of GNPs, resulting in an excellent strength-ductility match in composites with 5 vol% GNPs.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Chemistry, Physical
Quan-xin Shi, Cui-ju Wang, Kun-kun Deng, Yi-dan Fan, Kai-bo Nie, Wei- Wei-Liang
Summary: The present work investigates the impact of bimodal microstructure on the work hardening and softening behaviors of Mg-6Zn-1Gd-0.3Ca alloy. The study also discusses the grain refinement mechanism through EBSD analysis. The results reveal that the work hardening capacity of the alloy increases with the volume fraction of fine recrystallized grains due to increased dislocation storage rate caused by grain coarsening. The stress reduction value in the early stage of deformation is the highest for the alloy with fine recrystallized grains, providing a greater driving force for softening effect. However, the stress reduction values decrease with the increase of fine recrystallized grains in the later stage of deformation. Furthermore, the analysis indicates that dynamic recrystallization plays a significant role in the formation of fine recrystallized grains in the Mg-6Zn-1Gd-0.3Ca alloy.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Xin Lv, Kunkun Deng, Cuiju Wang, Kaibo Nie, Xiaogang Wang, Quanxin Shi
Summary: The effect of submicron SiCp content on the corrosion resistance of homogenized AZ91 alloy was investigated. The results showed that the addition of 0.5 vol.% submicron SiCp significantly improved the corrosion resistance, reducing the weightless corrosion rate from 4.44 mm/y to 0.68 mm/y. However, the corrosion resistance decreased with increasing submicron SiCp concentration.
MATERIALS TODAY COMMUNICATIONS
(2023)
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)
