Article
Nanoscience & Nanotechnology
Z. G. Liu, X. H. Gao, M. Xiong, P. Li, R. D. K. Misra, D. Y. Rao, Y. C. Wang
Summary: The study found that solution treatment is effective in improving the Charpy impact toughness of high manganese steels, but decreases strength. At low temperature, the stability of austenite is high. The impact fracture mode is ductile and the main deformation mechanism is mechanical twinning.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Jun Chen, Fu-tao Dong, Zhen-yu Liu, Guo-dong Wang
Summary: Two high manganese austenitic steels with different grain sizes were prepared to investigate size effect on twinning and cryogenic impact toughness. Increasing grain size from 11 to 47 μm enhanced Charpy impact absorbed energy by 36%, showing an inverse size effect on cryogenic impact toughness. The larger grain size resulted in better impact toughness at -196 degrees C due to stronger dynamic grain refinement, higher dislocation density, wider extended dislocations, and relatively homogeneous plastic deformation.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Jun Chen, Zhen-yu Liu, Guo-dong Wang
Summary: In this study, a high Mn austenitic steel alloyed with Al and V was designed, and the effect of aging temperature on microstructure and mechanical properties was investigated. The results show that aging temperature has little effect on grain size but significantly affects the volume fraction and size of precipitated particles. Although coarsening occurs at higher aging temperatures, the precipitation hardening is still sufficient, with only a slight decrease in cryogenic impact absorbed energy.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Nanoscience & Nanotechnology
Zongchi Wang, Shouwen Shi, Jingtai Yu, Bingbing Li, Yajing Li, Xu Chen
Summary: A cryogenic cyclic plastic strengthening method is proposed in this paper to improve the yield strength and maintain high elongation by changing the microstructure of the material.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Jinshuai Zhang, Guangqiang Li, Honghong Wang, Xiangliang Wan, Mingfeng Hu, Yulong Cao
Summary: In this study, cerium (Ce) was effectively introduced into high-Mn austenitic steel weld metal through the addition of cerium dioxide and calcium silicon reducing agents. The evolution of composition, number density, and size of inclusions in the weld metal with different Ce contents was systematically investigated. The results showed that the number density of inclusions increased and the average size decreased with the increase of Ce content. The percentage of inclusions with size less than 0.80 μm also increased.
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
(2023)
Article
Materials Science, Multidisciplinary
Jia-kuan Ren, Zhi-hong Li, Xin Zhou, Si-wei Wu, Jun Chen, Zhen-yu Liu
Summary: Aging treatment is an effective method for strengthening high-Mn strip steels in the automotive industry. However, its role in enhancing yield strength and cryogenic toughness of high-Mn steels is still unclear, and solute segregation has not received enough attention. This study investigates the microstructural evolution, including solute segregation and precipitation, under different aging treatments and their impact on mechanical properties. The results show that banded segregation of C, Mn, and V elements during aging treatment strongly affects cryogenic toughness. The presence of micron-scale VC carbides and nano-scale VC precipitates leads to the initiation and propagation of microcracks, and increased grain boundary segregation worsens the twinning formation and cryogenic toughness of the steel.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Gang Niu, Hatem S. S. Zurob, R. D. K. Misra, Qibo Tang, Zhihui Zhang, Minh-Tam Nguyen, Lili Wang, Huibin Wu, Yu Zou
Summary: In this study, we have achieved high fracture toughness and ductility in a high-strength austenitic stainless steel through cold rolling, flash annealing, and tempering processes. The steel exhibits a heterogeneous lamellar microstructure composed of reversed austenite lamellae and partially recrystallized austenite lamellae, leading to improved fracture resistance and toughness.
Article
Chemistry, Physical
Jun Chen, Shuang Li, Jia-Kuan Ren, Zhen-Yu Liu
Summary: The study demonstrates a strong dependence of strain hardening and deformation structure on deformation temperature in a high manganese austenitic steel. Sufficient twinning provides high and stable strain hardening capacity, while at 4K, mechanical twinning is hard to activate, resulting in the observation of planar dislocation arrays as a reason for multi-peak strain hardening behaviors.
Article
Materials Science, Multidisciplinary
Yi-Ming Wang, Yong Liang, Yang-Dong Zhai, Yong-Shi Zhang, Hao Sun, Zhen-Guang Liu, Guan-Qiao Su
Summary: In this study, the effects of cryogenic treatment on the microstructural morphology, corrosion resistance, and wear resistance of high-manganese austenitic steel were investigated. Cryogenic treatment was found to eliminate the strip morphology of hot-rolled specimens and improve the wear resistance of heat-treated specimens. However, its effect on the corrosion resistance of tested specimens varied depending on the production process.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Jia-kuan Ren, De-shun Mao, Ye Gao, Jun Chen, Zhen-yu Liu
Summary: By adding carbon elements to high-Mn austenitic steel, the yield strength of the steel can be significantly improved, while maintaining excellent cryogenic toughness. This method has high potential for industrial applications.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Metallurgy & Metallurgical Engineering
Xin-tian Wang, Hui-bin Wu, Yang Gu, Li-xiong Xu, Peng-cheng Zhang, Qi-bo Tang
Summary: The nickel-free high-manganese austenitic steel exhibited excellent mechanical properties after smelting and hot-rolling, including high tensile strength, impact energy at low temperature, and high elongation. The microstructure demonstrated annealing twins and a stable austenite phase during deformation.
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
(2022)
Review
Materials Science, Multidisciplinary
Lei Xia, Ling Yan, Hongmei Zhang, Yan Li, Zhengyi Jiang, Guanglong Li
Summary: High manganese austenitic steel is increasingly used in liquefied natural gas storage tank materials due to its excellent ductility and low cost. Research on this material has focused on understanding the factors affecting mechanical properties, analyzing reasons for deterioration in low-temperature properties, and elaborating on strengthening and toughening mechanisms to improve its performance.
Article
Materials Science, Multidisciplinary
Jie Tang, Shudong He, Yang Mo, Fulin Jiang, Dingfa Fu, Jie Teng, Hui Zhang
Summary: High-Mn austenitic steels are promising structural metallic materials for cryogenic-temperature industries due to their good properties and economy. In this study, the cryogenic-temperature toughness and deformation mechanisms were investigated. The results showed that an appropriate gamma SFE level was essential for their low temperature toughness. The plastic deformation mechanisms depended on stacking fault energy and accumulated strain or dislocation density levels simultaneously. Twinning-induced plasticity mechanism was found to contribute to good toughness at room temperature, while enhanced TWIP mechanism was observed at low temperature. Various martensite phases and changes in dislocation density were also identified.
MATERIALS CHARACTERIZATION
(2022)
Article
Nanoscience & Nanotechnology
Lingzhi Ba, Xinjie Di, Chengning Li, Jin Pan, Cheng Ma, Yongtao Qu, Xiaocong Yang, Wenbin Hu
Summary: The high temperature brittle zone of cryogenic high manganese steel can be effectively enhanced by homogenizing the initial microstructure and composition, reducing the occurrence of transverse cracks during hot working process. Homogenizing the initial composition helps to increase the size of hybrid precipitates and inhibit precipitation at grain boundaries. Additionally, homogenizing the initial microstructure and stored energy reduces the critical DRX temperature, increases the DRX fraction, and inhibits grain boundary slip.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Jinshuai Zhang, Guangqiang Li, Honghong Wang, Xiangliang Wan, Mingfeng Hu, Yulong Cao
Summary: The microstructure and mechanical properties of cryogenic high-Mn austenitic steel weld metals with different Ce contents were studied. The addition of Ce refined the grain size, increased the proportion of high-angle grain boundaries, and modified the main inclusions. The presence of Ce significantly improved the cryogenic impact toughness, yield strength, tensile strength, and total elongation.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Metallurgy & Metallurgical Engineering
Siwei Wu, Xiaoguang Zhou, Qiyuan Chen, Jiakuan Ren, Guangming Cao, Zhenyu Liu
STEEL RESEARCH INTERNATIONAL
(2017)
Article
Materials Science, Multidisciplinary
Qi-Yuan Chen, Jia-Kuan Ren, Zhang-Long Xie, Wei-Na Zhang, Jun Chen, Zhen-Yu Liu
JOURNAL OF MATERIALS SCIENCE
(2020)
Article
Nanoscience & Nanotechnology
Qi-Yuan Chen, Jun Chen, Jia-Kuan Ren, Zeng-Hui Wang, Zhen-Yu Liu
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2020)
Article
Materials Science, Multidisciplinary
Qi-Yuan Chen, Wei-Na Zhang, Zhang-Long Xie, Jia-Kuan Ren, Jun Chen, Zhen-Yu Liu
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2020)
Article
Materials Science, Multidisciplinary
Jia-Kuan Ren, Qi-Yuan Chen, Jun Chen, Zhen-Yu Liu
Article
Nanoscience & Nanotechnology
Jia-kuan Ren, Qi-yuan Chen, Jun Chen, Zhen-yu Liu
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2020)
Article
Metallurgy & Metallurgical Engineering
Qi-Yuan Chen, Wei-Na Zhang, Jia-Kuan Ren, Meng Wang, Zhang-Long Xie, Jun Chen, Zhen-Yu Liu
Summary: This study compared the effects of several treatments on low-Ni steels, including modified quenching and tempering, ultrafast cooling and tempering, and ultrafast cooling, intercritical quenching, and tempering. The results showed that all three treatments could improve the cryogenic toughness of low-Ni steel, with UFC-LT treatment being the most effective.
STEEL RESEARCH INTERNATIONAL
(2021)
Article
Metallurgy & Metallurgical Engineering
Xiaoguang Zhou, Hua Li, Qiyuan Chen, Zhenyu Liu
Summary: The controlled rolling of X80 pipeline steel in the austenite recrystallization temperature region increases strength and low-temperature impact toughness by refining austenite grain size and accelerating the formation of granular bainite microstructure. The main strengthening mechanisms are dislocation strengthening and grain refinement strengthening, with high-angle grain boundaries significantly impeding crack propagation to improve toughness.
STEEL RESEARCH INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Pengjie Wang, Jiakuan Ren, Qiyuan Chen, Jun Chen, Zhenyu Liu
Summary: The study reveals that grain size has a significant impact on secondary twin formation and strain hardening, with larger grain size leading to decreased mechanical properties, while the difference in fractions of secondary twins may be a key factor.
MATERIALS CHARACTERIZATION
(2021)
Article
Nanoscience & Nanotechnology
Qi-Yuan Chen, Wei-Na Zhang, Shuai Tang, Peng-Jie Wang, Jun Chen, Zhen-Yu Liu
Summary: The microstructural heredity of as-rolled lath martensite with different prior austenite grain morphologies during inter-critical quenching has been studied. It is found that the refinement of final microstructure can be achieved by refining the as-rolled lath martensite through both refinement and elongation of prior austenite grains. The cryogenic toughness of Ni-containing cryogenic steels is significantly improved through the heredity effect of as-rolled lath martensitic refinement.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
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)