Article
Engineering, Civil
Nasim Mosafajahanabad, Morteza Alizadeh, Erfan Salahinejad
Summary: This study investigated the ARB processing and characteristics of Zn/6 wt% Al multilayered composite sheets, evaluating their structure, strength, elongation, and corrosion behavior. Despite some reduction in tensile strength and elongation with increasing ARB cycles, the potential for industrial applications of ARB-processed Zn/Al multilayered composites was highlighted after optimization of mechanical and corrosion behaviors.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Xiaohan Dang, Bing Zhang, Zhijuan Zhang, Pengcheng Hao, Yi Xu, Yingchun Xie, Renzhong Huang, Kuaishe Wang, Wen Wang, Qiang Wang
Summary: A multiple processing technique combining cold spraying and accumulative roll bonding was used to prepare multilayered 1060Al/AleAl(2)O(3) composites with improved ductility. The microstructural evolution, tensile properties, and fracture behavior of the composite were analyzed to understand the mechanisms behind the high strength and ductility achieved through optimized processing. Analysis of microstructural features provided insights into the underlying mechanisms explaining the improved mechanical properties.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Xiaojuan Jiang, Mengjun Hu, Qiongyao He, Pengzhan Cai, Ling Zhang
Summary: In this study, multilayered pure aluminum sheets with different cycle ARB processed layers were prepared by accumulative roll bonding process and further annealed. The experimental results showed that the ARB6/3/6 aluminum exhibited high tensile strength and elongation.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Moslem Tayyebi, Davood Rahmatabadi, Armin Karimi, Maryam Adhami, Ramin Hashemi
Summary: This study investigates the effect of annealing time and temperature on Al5052/Cu multilayer composites processed by accumulative roll bonding (ARB). Results show that different annealing conditions lead to variations in the interfacial and mechanical properties of the composites, with the maximum tensile strength of 345 MPa achieved at 400 degrees C for 90 min. OM and SEM analyses reveal different fracture surfaces and macroscopic paths under different annealing conditions.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Lei Zhao, Min Zha, Yipeng Gao, Kai Guan, Peng Chen, Meng-Na Zhang, Zhen-Ming Hua, Hai-Long Jia, Hui-Yuan Wang
Summary: A novel multistage twinning mode has been discovered in a deformed Mg-Al-Gd alloy, which enhances the strength and plasticity of the alloy. This new twinning mode, combined with high-density dislocations and dense twin boundaries, provides high strain hardening of Mg alloys.
MATERIALS RESEARCH LETTERS
(2023)
Article
Engineering, Mechanical
Hao Wu, Meng Huang, Xuewen Li, Yiping Xia, Zhi Wang, Guohua Fan
Summary: The study proposed a new heterogeneous laminated/gradient integrated strategy to improve material performance. Results demonstrated that the stress-bearing constituents gradually transition from Ti(Al) to TiBw/Ti layers as the temperature decreases, leading to temperature-dependent reversed fracture behavior.
INTERNATIONAL JOURNAL OF PLASTICITY
(2021)
Article
Engineering, Multidisciplinary
Saeed Daneshmand, S. Mohammad Sajadi, Mohammad Heydari Vini
Summary: The mechanical, corrosion, and wear features of AA1050/TiC composites were studied through molecular dynamics simulation. Powder metallurgy and accumulative roll bonding were used to fabricate the composites. It was found that increasing the Nano TiC Wt.% enhanced wear and corrosion resistance, density, hardness, and strength while reducing elongation, bonding strength, and electrical conductivity.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2023)
Article
Chemistry, Physical
Davood Rahmatabadi, Mina Ahmadi, Mostafa Pahlavani, Ramin Hashemi
Summary: By adding Li to Mg, a dual-phase Mg-Li alloy with very low density and high formability was successfully produced and used as a reinforcement phase. Through the ARB process, a three-layered metal matrix Al-Mg composite with improved mechanical properties was obtained. Results showed that the tensile strength and total elongation of the processed composite were significantly enhanced after multiple ARB cycles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Coatings & Films
M. Wang, W. N. Zhang, L. Du, X. Zhang, L. L. Cheng, C. Yan, Y. Liu, S. B. Yang
Summary: Different individual layer thicknesses in Al/AlN multilayer composites result in different interface damage behaviors, with hillocks damage observed in 250 nm thick layers and interface delamination and fracture dominant in 25 nm thick layers. Deformation behavior shifts from inhomogeneous shear band deformation to homogeneous shear bands deformation caused by grain boundary sliding and grain rotation.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Miao Cao, Cui-Ju Wang, Kun-Kun Deng, Kai-Bo Nie
Summary: The study shows that LMCs with more layers have better deep drawability, as they have higher limit-drawing ratio and more strain hardening. The Ti/Al interface morphology and increase in layers result in thinner component metals, promoting the formation of a more firm overlapped interfacial structure, helping to distribute stress more evenly and impeding crack penetration.
Article
Chemistry, Physical
Mahsa Avazzadeh, Morteza Alizadeh, Moslem Tayyebi
Summary: This research investigated the structure and properties of Cu/Zn/Al multilayered composites fabricated by cross accumulative roll bonding (CARB), including changes in crystallite size, tensile strength, fracture toughness, wear mechanism, and corrosion resistance. Results showed a complex relationship between these properties and the number of CARB cycles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Miao Cao, Hui-Qin Chen, Kun-Kun Deng, Xing-Wang Duan, Shuang Liu, Xin Che, Fei Li
Summary: This study reveals the effects of the interface on the mechanical properties and stamping formability of Ti/Al multilayered composites (LMCs). Increasing the number of layers in LMCs leads to a thickening of the TiAl3 phase at the interface, promoting overall coordinated deformation. The increase in LMCs layers reduces grain size and basal texture strength of Ti, but enhances elongation. Moreover, increasing the number of interfaces hinders crack propagation, and the brittle TiAl3 phase at the interface induces microcracks and delays failure, improving stamping formability.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Engineering, Manufacturing
Xiaobo Zhang, Lijun Zhang, Long Zeng, Qing Cai, Xiaoxia Jiang
Summary: In this study, a novel method combining electroplating and ARB was used to manufacture multilayer composites with superior properties. After 6 cycles of ARB, the grains and intermetallic compounds were significantly refined, and the tensile properties improved significantly.
JOURNAL OF MANUFACTURING PROCESSES
(2022)
Article
Materials Science, Coatings & Films
Mahnam Ebadi, Mahdi Alishavandi, Mohammad Hossein Paydar
Summary: Anodizing improved the corrosion resistance of ARBed AA and AMC samples, but the processed samples exhibited altered electrochemical behavior due to the formation of a complex oxide structure.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Tan Xin, Liu Kai, Wang Zhixuan, Yan Xiaobo, Yang Wenshu, Wu Gaohui
Summary: The use of SiCp/2024Al composite particles as deformable reinforcement in metal matrix composites showed higher toughness and comparable tensile strength compared to SiCp/Al composites with the same SiC particle content. The main deformation mechanism shifts with the increase in matrix strength, and uniform strain distribution was observed in the deformable particle/2024Al composites.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Reza Gholizadeh, Shuhei Yoshida, Yu Bai, Shu Kurokawa, Akinobu Shibata, Nobuhiro Tsuji
Summary: In this study, the deformation behavior of the CoCrFeMnNi alloy under ultra-high strains at various temperatures was investigated. It was found that deformation twinning was extensively activated at moderate to high strains and at elevated temperatures above 600 degrees C. The alloy showed excellent deformability at low temperatures, but embrittlement occurred at intermediate temperatures. This research provides insights into the microstructure evolution and mechanical response of the Cantor alloy under shear deformation at a wide range of strains and temperatures.
Article
Materials Science, Multidisciplinary
Yimian Chen, Shuize Wang, Jie Xiong, Guilin Wu, Junheng Gao, Yuan Wu, Guoqiang Ma, Hong-Hui Wu, Xinping Mao
Summary: In this study, CIT prediction models for low-alloy steel were developed using machine learning algorithms, based on collected CIT data. Three feature construction strategies were proposed and compared. The results showed that the strategy combining alloy composition, heat treatment parameters, and physical features performed the best.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Zhe Yu, Junqi Qiu, He Li, Pengzhan Cai, Ling Zhang, Xiaoxiao Fu, Jinsan Wang, Namin Xiao
Summary: The mechanical properties and thermal stability of Al-Cu-Mg-Ag alloy prepared by friction stir processing and subsequent aging were studied. The mechanical properties in the stir zone were significantly improved after peak aging treatment, while plasticity remained the same. Increasing the rotational speed improved the mechanical properties of the stir zone and enhanced age-hardening response. Heat exposure caused a more drastic decrease in the mechanical properties of the stir zone compared to the base material due to the promotion of elemental diffusion and precipitation coarsening.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Hui Wang, Zhaoxi Cao, Ziyuan Gao, Cunyu Wang, Jianxiong Liang, Andy Godfrey, Ling Zhang, Guilin Wu, Wenquan Cao
Summary: The deformation response of a (Nb, V) micro-alloyed FeMnAlC low density steel has been investigated as a function of grain size. Tensile testing and electron microscopy were used to characterize the mechanical properties and microstructure. The results show that the yield stress is strongly dependent on the initial grain size, while the friction stress and Hall-Petch slope vary with the level of applied tensile strain. Based on these findings, a model is proposed to simulate the stress-strain curves during tensile deformation of the low-density steel.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Avala Lavakumar, Myeong-heom Park, Reza Gholizadeh, Ranjit Kumar Ray, Mitsuhiro Murayama, Nobuhiro Tsuji
Summary: Low-carbon multi-phased steels with transformation induced plasticity (TRIP) effect have attracted significant attention for automotive applications due to their superior mechanical balance between strength and ductility. However, the complex microstructural evolutions during thermo-mechanical processing and the influence of constituent phases on mechanical properties have not been fully understood. In this study, the formation process of multi-phased microstructures in a low alloy steel during intercritical annealing and subsequent partitioning heat-treatment were systematically investigated. The phase fractions of ferrite, martensite, and retained austenite were found to change significantly with increasing holding time at lower temperature. Newly formed ferrite was observed to transform from austenite through massive or bainitic transformation, resulting in different types of ferrite in the final microstructures. The presence of retained austenite was attributed to interstitial carbon diffusion, leading to improved tensile elongation and TRIP effect during deformation. The best strength-ductility balance was achieved with the shortest heat-treatment at lower temperature.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
Avala Lavakumar, Myeong-heom Park, Sukyoung Hwang, Hiroki Adachi, Masugu Sato, Ranjit Kumar, Mitsuhiro Murayama, Nobuhiro Tsuji
Summary: Deformation-induced martensitic transformation is a crucial phenomenon for achieving both high strength and large ductility in low alloy multi-phase steels. The transformation induced plasticity (TRIP) effect, which involves the phase transformation from austenite to martensite during deformation, can significantly enhance the strain hardening ability. The mechanical stability of austenite against martensitic transformation is influenced by the surrounding phases, but the details are still unclear.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Yan Chong, Jangho Yi, Guanyu Deng, Nobuhiro Tsuji
Summary: The aging behavior of Ti-1.0 wt pct Fe alloy was studied in this research, focusing on microstructural modifications within the beta grains. At lower aging temperatures, omega(ath) precipitates gradually decreased and were replaced by alpha(s) precipitates. At higher aging temperatures, alpha(s) precipitates increased in size while their volume fraction decreased, indicating a partial alpha to beta reverse phase transformation. The presence of omega(ath) promoted a homogeneous precipitation behavior of alpha(s) precipitates, leading to the formation of plate-shaped alpha(s) precipitates with multiple crystallographic variants.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Wu Gong, Takuro Kawasaki, Ruixiao Zheng, Tsuyoshi Mayama, Binxuan Sun, Kazuya Aizawa, Stefanus Harjo, Nobuhiro Tsuji
Summary: The deformation behavior of a commercial AZ31 magnesium alloy was studied during uniaxial compression at 21 K and 298 K using in-situ neutron diffraction. Decreasing the deformation temperature led to a slight increase in yield stress, but a remarkable enhancement in both the fracture stress and fracture strain. The low temperature sensitivity of the {10 (1) over bar2} extension twinning resulted in the slight increase in yield stress. At 21K, basal slip was suppressed, while extension twinning was promoted, leading to a higher twin volume fraction. The suppression of {10 (1) over bar1}-{10 (1) over bar2} double twinning in the late stage of deformation was considered to be the reason for the delayed fracture at 21 K.
SCRIPTA MATERIALIA
(2023)
Article
Nanoscience & Nanotechnology
Yan Chong, Reza Gholizadeh, Kaichi Yamamoto, Nobuhiro Tsuji
Summary: The coarse lamellar microstructure of as-cast alpha+beta titanium alloys can be effectively refined by boron additions, which has mainly been attributed to the precipitation of TiB whiskers that pin the growth of prior beta grains. We report an alternative mechanism of colony refinement in Ti-6Al-4V alloy containing trace amounts of boron solutes (0.02 wt.%). Using atom probe tomography, it is discovered for the first time that boron solutes segregate at the alpha/beta phase boundaries, due to its negligible solubilities in both alpha and beta phases. These segregated boron solutes at the alpha/beta phase boundaries restrict an easy growth of grain boundary alpha, and in turn promote the nucleation of more grain boundary alpha variants that serve as nucleation sites of alpha colonies. Hence, the colony size can be substantially refined without the formation of TiB whiskers that could be harmful to the ductility of the material.
SCRIPTA MATERIALIA
(2023)
Article
Nanoscience & Nanotechnology
Avala Lavakumar, Shuhei Yoshida, Jesada Punyafu, Shiro Ihara, Yan Chong, Hikaru Saito, Nobuhiro Tsuji, Mitsuhiro Murayama
Summary: The study focuses on the influence of grain size and temperature on the mechanical properties of equiatomic FeCoNi alloy. Different grain sizes ranging from ultra-fine to coarse were achieved by high-pressure torsion and annealing. The results show that the tensile yield strength is affected by temperature and grain size, and the grain boundary strength remains constant while the friction stress increases at lower temperature. At cryogenic temperature, the presence of nano twinning contributes to the enhancement of strength and ductility in addition to dislocation slip.
SCRIPTA MATERIALIA
(2023)
Article
Multidisciplinary Sciences
Hongwei Cheng, Xiaoxia Zhu, Xiaowei Cheng, Pengzhan Cai, Jie Liu, Huijun Yao, Ling Zhang, Jinglai Duan
Summary: The authors report on the fabrication of gold and copper quasi-BCC nanolattices with beam diameters as low as 34 nm, which exhibit ultrahigh energy absorption capacity and compressive yield strengths exceeding their bulk counterparts. The exceptional energy absorption capacities of these quasi-BCC nanolattices stem from the high mechanical strength and plasticity of metals, size reduction-induced mechanical enhancement, and the quasi-BCC nanolattice architecture.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Guoqiang Ma, Yimian Chen, Shuize Wang, Honghui Wu, Junheng Gao, Guilin Wu, Xinping Mao
Summary: Hot-stamping steel is a high-strength steel used in key safety components of vehicles. It can be produced using traditional or compact strip production (CSP) processes. The microstructure, mechanical properties, and corrosion behavior of hot-stamping steel produced by these processes were compared. The CSP process resulted in a slightly better corrosion resistance due to smaller inclusion size and distribution density, reducing the number of corrosion sites.
Review
Chemistry, Physical
Chunlei Shang, Honghui Wu, Guangfei Pan, Jiaqi Zhu, Shuize Wang, Guilin Wu, Junheng Gao, Zhiyuan Liu, Ruidi Li, Xinping Mao
Summary: Different from traditional techniques, additively manufactured metallic products have unique microstructures and superior performance due to distinct solidification thermal histories and phase transformation processes. This review summarizes commonly used additive manufacturing techniques in steel-based alloys, and discusses typical microstructures produced by metal additive manufacturing technologies with different components and processes, such as porosity, dislocation cells, dendrite structures, residual stress, and element segregation. The characteristic microstructures can significantly influence the properties of additively manufactured products, highlighting the importance of tuning components and additive manufacturing process parameters to achieve desired microstructures. Finally, future development and prospects of additive manufacturing technology in steel are discussed.
Review
Chemistry, Physical
Zhuo Cheng, Mengjie Gao, Jinyue Liu, Shuize Wang, Guilin Wu, Junheng Gao, Honghui Wu, Xinping Mao
Summary: This review provides a systematic study of the relationship between multi-scale microstructural tailoring and the mechanical behavior and other service performance of high-strength press-hardened steels (PHS). Traditional Mn-B steels and novel PHS are categorized into different strategies to enhance their properties. The addition of microalloying elements in traditional Mn-B steels refines the microstructure of PHS, resulting in improved mechanical properties and hydrogen embrittlement resistance. On the other hand, novel PHS with innovative thermomechanical processing obtains a multi-phase structure and superior mechanical properties compared to traditional Mn-B steels, while also affecting oxidation resistance.
Article
Crystallography
Guoqiang Ma, Yimian Chen, Guilin Wu, Shuize Wang, Tianyi Li, Wenyue Liu, Honghui Wu, Junheng Gao, Haitao Zhao, Chaolei Zhang, Xinping Mao
Summary: This study investigates the effects of microalloying and cooling rate on the microstructure, precipitation behavior, and strengthening mechanisms of X80-grade pipeline steel modified with Nb and Nb-V. The results show that the strength of quenched steels is higher than that of air-cooled steels, and the increase in strength is more pronounced with the addition of Nb-V. Additionally, the Nb-V addition promotes the formation of lath structures, and the calculated yield stress of the steels is in good agreement with the measured values.
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)
