Review
Materials Science, Multidisciplinary
Shuo-shuo Li, Hai-wen Luo
Summary: This paper discusses the application of hot forming in the automotive industry, focusing on different steel grades and their advantages, particularly comparing medium-Mn steels with the popular 22MnB5 in hot forming. Future research should address technological challenges in hot forming of medium-Mn steels to facilitate commercialization.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2021)
Review
Metallurgy & Metallurgical Engineering
Deepak Kumar, Indrani Sen, Tapas Kumar Bandyopadhyay
Summary: Deformation-induced mechanisms, such as transformation-induced plasticity (TRIP) and twinning-induced plasticity (TWIP), contribute to the improved tensile properties of medium-Mn steels. This study reviews various thermomechanical processes and their microstructural evolutions, as well as the mechanical properties and fatigue behavior of these steels. It also proposes design criteria for enhanced fatigue resistance in medium-Mn steels.
STEEL RESEARCH INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Wenlu Yu, Lihe Qian, Xu Peng, Tongliang Wang, Kaifang Li, Chaozhang Wei, Zhaoxiang Chen, Fucheng Zhang, Jiangying Meng
Summary: By adding a small amount of Al, a medium-Mn steel with low Mn content of 2.7 wt.% was designed, which exhibited a large amount of retained austenite and persistent high strain hardening and superior mechanical properties during plastic deformation.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
P. Kantanen, S. Anttila, P. Karjalainen, R. Latypova, M. Somani, A. Kaijalainen, J. Komi
Summary: The processing conditions to achieve the desired tensile strength and minimum retained austenite fraction in hot-rolled 3-4%Mn medium Mn steels were investigated using quenching and partitioning (QP) and austenite reverse transformation (ART) treatments. The results showed that both processes can achieve relatively high fractions of austenite, with comparable results to those predicted by thermodynamic equilibrium.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Mun Sik Jeong, Tak Min Park, Seunggyu Choi, Seok-Jae Lee, Jeongho Han
Summary: A novel resetting process is proposed in this study to recover the reduced ductility of cold-worked medium-Mn steels by restoring the original microstructure of the steel through simple heat treatment. The ductility of the reset steel is successfully recovered and its strength is improved, simplifying the manufacturing process of automotive components with conflicting attributes.
SCRIPTA MATERIALIA
(2021)
Article
Materials Science, Multidisciplinary
Mun Sik Jeong, Tak Min Park, Dong-Il Kim, Hidetoshi Fujii, Hye Ji Im, Pyuck-Pa Choi, Seung-Joon Lee, Jeongho Han
Summary: This work demonstrated the viability of friction stir welding for the welding of medium-Mn steels when used as cryogenic vessel materials for liquefied gas storage. The friction stir welded steel exhibited improved microstructure and impact toughness compared to tungsten inert gas welding. The presence of gamma R phase and nanoscale globular microstructure in the weld zone contributed to the enhanced impact toughness at low temperatures.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Review
Materials Science, Multidisciplinary
Yong Li, David San Martin, Jinliang Wang, Chenchong Wang, Wei Xu
Summary: The study reviews the importance of the thermal stability of metastable austenite in the design of advanced high-strength steels, providing guidance for tailoring the stability of metastable austenite and achieving desirable microstructure. Both experimental and theoretical aspects are considered, discussing factors influencing thermal stability and reviewing kinetic models describing martensitic transformation.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Metallurgy & Metallurgical Engineering
Xiao Shen, Hanmeng Qiao, Wenwen Song, Wolfgang Bleck
Summary: The Fe-5Mn-2Al-0.1C and micro-alloyed Fe-5Mn-2Al-0.1C-0.1Nb-0.2V medium Mn steels were processed using a novel flash-austenite-reverse-transformation (ART) annealing. A core-shell Mn-gradient in austenite was observed and characterized at near-atomic scale using atom probe tomography. Compared to conventional ART annealing, the flash-ART process doubled the austenite fraction in both materials based on electron backscattering diffraction measurement. The rapid austenite reversion in flash-ART annealed medium Mn steels is attributed to negligible partitioning local equilibrium controlled austenite kinetics, while the formation of the core-shell Mn-gradient is caused by different austenite growth kinetics and interface mobilities. Microalloying elements were found to form nano-carbides, which decelerate austenite reversion and retard austenite growth.
STEEL RESEARCH INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Tianle Li, Shu Yan, Xianghua Liu
Summary: Three kinds of alloys were prepared via different heat treatment conditions, and the C and Mn concentrations in metastable austenite (gamma) varied in Q&P, 6MnHR, and 9MnIA samples. The content of gamma in the three steels changed to different degrees with deep-cryogenic treatment, primarily due to the influence of C and Mn atoms on transformation temperature and Neel temperature.
Article
Materials Science, Multidisciplinary
Wenlong Wu, Minghui Cai, Zeyu Zhang, Weigong Tian, Haijun Pan
Summary: The elevated temperature tensile behavior of a Nb-Mo microalloyed medium steel was investigated, and it was found that the ultimate tensile strength was significantly reduced with increasing deformation temperature, while the yield strength and total elongation values changed slightly. The best combination of ultimate tensile strength and total elongation was achieved at a deformation temperature of 50 degrees C.
Article
Materials Science, Multidisciplinary
Eider Del Molino, Maribel Arribas Telleria, Casey Gilliams, Artem Arlazarov, Javier Jesus Gonzalez, Emmanuel De Moor, John Gordon Speer
Summary: In this study, two medium Mn steels were treated with a quenching and partitioning process to obtain high contents of retained austenite. The addition of Ni effectively stabilized the austenite content. The distribution of Mn and Ni from martensite to austenite was observed. Lower quenching temperature conditions facilitated the enrichment of Mn in the austenite during partitioning.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2022)
Review
Metallurgy & Metallurgical Engineering
Priya Tiwari, Abhinav Varshney
Summary: Deformation-induced austenite-to-martensite transformation is a key phenomenon in controlling the flow behavior of TRIP and TRIP-assisted steels. This study reviews and compares various techniques for quantitative assessment of austenite during deformation, and suggests that magnetic permeability measurement techniques can accurately evaluate the variation in austenite content in TRIP and TRIP-assisted steel specimens.
STEEL RESEARCH INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Peng Chen, Rong Chen, Xiao-Wu Li
Summary: The tensile deformation behavior of a duplex steel with banded ferrite and austenite structure was studied. The steel shows a good strength-ductility match and a three-stage deformation behavior, which is influenced by transformation-induced plasticity, twinning-induced plasticity, and dislocation slipping. The TWIP effect is only active in the final deformation stage, while the TRIP effect plays an important role throughout the majority of the deformation process.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
T. W. J. Kwok, F. F. Worsnop, J. O. Douglas, D. Dye
Summary: Carbon is a well known austenite stabiliser and can be used to alter the deformation mechanisms in medium Mn steels, such as TRIP or TWIP + TRIP effects. The effect of carbon beyond quasi-static tensile behavior is less understood. In this study, medium Mn steels with different carbon contents were processed to form different microstructures. The low carbon steel exhibited higher Charpy impact energy compared to the high carbon steel, indicating that the use of carbon to promote TWIP + TRIP behavior should be avoided in alloy design.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Yuming Zou, Hua Ding, Zhengyou Tang
Summary: The increase in carbon content enhances the strength and ductility of medium Mn steels, promoting the diffusion of C and Mn atoms, increasing the stability and volume fraction of austenite, strengthening the TRIP effect, thus improving the work hardening and ductility of the material.
Article
Materials Science, Multidisciplinary
Zhuang Li, Pengcheng Zhao, Tiwen Lu, Kai Feng, Yonggang Tong, Binhan Sun, Ning Yao, Yu Xie, Bolun Han, Xiancheng Zhang, Shantung Tu
Summary: This study investigates the microstructural evolution, mechanical properties, and deformation mechanisms of a multi-principal element alloy prepared via laser powder bed fusion. The results show that the annealing temperature significantly affects the grain size, dislocation density, and precipitates, which in turn influence the strain hardening behavior and mechanical properties of the alloy.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
K. N. Sasidhar, Heena Khanchandani, Siyuan Zhang, Alisson Kwiatkowski da Silva, C. Scheu, Baptiste Gault, Dirk Ponge, Dierk Raabe
Summary: We conducted high-resolution structural and chemical characterization of the oxide films on a ferritic Fe-13 at% Cr alloy at different growth stages. The protective oxide film was found to be 5-6 nm thick, epitaxially grown with a cubic spinel-structure, and had a Baker-Nutting orientation-relationship with the alloy. The composition evolution within the oxide was explained by the low solid-state mobility of Cr3+ cations, suggesting the miscibility gap in the Fe-Cr spinel oxide solid-solution as a cause for the reduced driving force for oxide-layer thickening over time.
Review
Materials Science, Multidisciplinary
Binhan Sun, Alisson Kwiatkowski da Silva, Yuxiang Wu, Yan Ma, Hao Chen, Colin Scott, Dirk Ponge, Dierk Raabe
Summary: This review critically discusses the microstructure and mechanical responses of steels with medium manganese content, highlighting the differences from established steel grades. It addresses the phase transformation phenomena and mechanical behavior of these steels, covering the whole inelastic deformation regime. The relationships between processing, microstructure, and mechanical properties are assessed and open questions and challenges are identified for future research efforts.
INTERNATIONAL MATERIALS REVIEWS
(2023)
Article
Metallurgy & Metallurgical Engineering
Jun Zhang, Binhan Sun, Zhigang Yang, Chi Zhang, Hao Chen
Summary: This study proposes a microstructure architecting strategy based on a core-shell compositional distribution to enhance the hydrogen embrittlement resistance in advanced high-strength steels. By accurately designing the distribution of components within the austenite phase, it is possible to inhibit the formation and growth of hydrogen embrittlement while maintaining the mechanical performance of the material.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2023)
Article
Materials Science, Multidisciplinary
T. S. Prithiv, Baptiste Gault, Yujiao Li, Dustin Andersen, Nathalie Valle, Santhana Eswara, Dirk Ponge, Dierk Raabe
Summary: The addition of boron (B) to steels significantly suppresses the austenite to ferrite phase transformation, increasing their hardenability. The mechanisms of B segregation and how exactly B suppresses the ferrite nucleation remain elusive.
Article
Materials Science, Multidisciplinary
Ran Ding, Chaofan Zhang, Yan Wang, Chenxi Liu, Yingjie Yao, Jun Zhang, Zhigang Yang, Chi Zhang, Yongchang Liu, Hao Chen
Summary: Recent research has shown that manipulating chemical heterogeneity in steels can effectively tailor retained austenite and create novel microstructures. However, the mechanistic role of chemical heterogeneity in austenite decomposition and stabilization is not fully understood. This study investigates the potential effects of Mn heterogeneity on austenite decomposition and stabilization in a commercial Quenching and Partitioning (Q&P980) steel. The results show a strong kinetic interaction between the Mn enriched region in austenite and the migrating austenite/ferrite interface upon cooling, which can significantly affect carbon partitioning and stability.
Article
Nanoscience & Nanotechnology
Minglu Chen, Bin Jiang, Ran Ding, Yihuan Liu, Liming Yu, Zejun Wang, Chenxi Liu, Yongchang Liu
Summary: In this study, austenitic steel and high-Cr ferritic steel were joined using transient liquid phase (TLP) bonding technique with a Fe-Si-B amorphous interlayer. The effects of bonding time on microstructure evolution and tensile behaviors were investigated. The results showed that the precipitated particles and the formation of martensitic layer were influenced by the bonding time. The deformation behavior and fracture location were also affected by the bonding time, indicating the importance of optimizing the bonding parameters in TLP bonding process.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Huijie Cheng, Xu Lu, Jingjing Zhou, Tiwen Lu, Binhan Sun, Xian-Cheng Zhang, Shan -Tung Tu
Summary: Multicomponent alloys have gained global attention due to their excellent mechanical and functional properties. However, concerns about hydrogen embrittlement (HE) arise due to their high strength level. This study investigates the effect of ordered precipitates on HE resistance in CoCrNi-based medium entropy alloys (MEA). It demonstrates that the presence of ordered precipitates reduces the tendency of H-induced intergranular cracking, leading to improved HE resistance.
Article
Materials Science, Multidisciplinary
Wei Peng, Jianbao Gao, Tiwen Lu, Binhan Sun, Xiancheng Zhang, Lijun Zhang, Shantung Tu
Summary: In this paper, a multi-order-parameter phase-field model was developed to study the abnormal grain growth (AGG) mechanism in copper thin films. The model was coupled with elastic mechanics and finite element framework to achieve a quantitative simulation of microstructure evolution during AGG. The simulation was further combined with the Mayadas-Shatzkes model to predict the evolution of electrical resistivities, leading to the proposal of feasible strategies for preparing high-performance copper thin films.
Article
Materials Science, Multidisciplinary
Xinren Chen, Jaber Rezaei Mianroodi, Chuanlai Liu, Xuyang Zhou, Dirk Ponge, Baptiste Gault, Bob Svendsen, Dierk Raabe
Summary: In aluminum alloys, solute atoms often trap excess vacancies, resulting in a change in the number of mobile vacancies and affecting solute diffusion and precipitate formation. This study investigates vacancy trapping indirectly in the Al-Sn binary alloy and reveals that the addition of Sn reduces the density of quenched-in Frank loops. Modeling of vacancy trapping by solutes during quenching shows the influence of vacancy-solute binding energy, solute concentration, and temperature on the trapping process.
Article
Engineering, Manufacturing
Xiaopei Wang, Weiting Li, Yingjie Yao, Luyao Fan, Jinhua Wang, Weiyi Wang, Pengyu Wen, Zhigang Yang, Hao Chen
Summary: In this study, low-density ultrahigh-strength steels (LD-UHSS) were designed and fabricated using laser powder bed fusion with in-situ alloying. The addition of aluminum reduced the density and significantly strengthened the LD-UHSS through the precipitation of the B2 phase. The laser additive manufacturing process resulted in the formation of fine metastable retained austenite, contributing to improved ductility. By tailoring key phases, the mechanical performance of LD-UHSS can be effectively optimized.
ADDITIVE MANUFACTURING
(2023)
Article
Nanoscience & Nanotechnology
Jinhua Wang, Shidong Wang, Weiting Li, Yingjie Yao, Xiaopei Wang, Zhigang Yang, Hao Chen
Summary: Selective laser melting is a promising method for manufacturing complex-shaped metallic parts. By investigating the manufacturing issues of conventional medium-carbon H13 steel, the critical role of austenite stability in cracking behavior and ductility was revealed.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Boning Zhang, Kai Xiong, Maoqiu Wang, Zhenbao Liu, Kun Shen, Yong Mao, Hao Chen
Summary: This study investigates solute-hydrogen interactions at different grain boundaries using first-principles calculations, and identifies effective descriptors for grain boundary engineering strategies, providing fundamental insights for designing high-performance alloys resistant to hydrogen embrittlement.
SCRIPTA MATERIALIA
(2024)
Article
Nanoscience & Nanotechnology
Yu Xie, Tiwen Lu, Pengcheng Zhao, Binhan Sun, Ning Yao, Xiyu Chen, Jianping Tan, Xian-Cheng Zhang, Shan-Tung Tu
Summary: A hierarchical twin architecture was developed in coarse grained CoCrNi MEA through a new technique and annealing process, which improved the strength and ductility at cryogenic temperature. The material exhibited exceptional fatigue strength and showed the ability to suppress crack initiation. The unique substructure played a crucial role in achieving such performance.
SCRIPTA MATERIALIA
(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)
