Article
Nanoscience & Nanotechnology
Sang-Hwa Lee, Jae-Gil Jung, Sung-Il Baik, David N. Seidman, Min-Seok Kim, Young-Kook Lee, Kwangjun Euh
Summary: The research revealed that the formation and evolution of GPI and GPII zones during natural aging had a significant impact on the mechanical properties of the Al-7.6Zn-2.7Mg-2.0Cu-0.1Zr-0.07Ti alloy. The Zn/Mg atomic ratio, mean radius, number density, and volume fraction of the GP zones also played crucial roles in influencing the mechanical properties of the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Jonas Ehrich, Arne Roos, Benjamin Klusemann, Stefanie Hanke
Summary: This study found that with increasing Mg content, friction surfacing coatings require lower process speeds, resulting in thinner and narrower coatings. The decrease in SFE also leads to smaller recrystallized grain size and larger grain orientation differences.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Ranming Niu, Xianghai An, Linlin Li, Zhefeng Zhang, Yiu-Wing Mai, Xiaozhou Liao
Summary: By adjusting the Al content in Cu-Al alloys to control stacking fault energy (SFE), the mechanical properties and deformation mechanisms of the materials can be manipulated. The study revealed that the influence of sample size on strength decreased with decreasing SFE or increasing Al content, and a theoretical model was proposed to explain this size dependency.
Article
Engineering, Mechanical
Peter J. Blau
Summary: Sliding wear damage on non-lubricated metallic bearing surfaces is caused by the dissipation of frictional work, presenting different damage features depending on alloy-specific deformation modes and microstructural properties. Metal pairs with similar friction coefficients may not wear equally due to differences in energy partition. The transition in wear mechanisms is influenced by composition and surface processing methods.
Article
Materials Science, Multidisciplinary
Huan Liu, Bo Gao, Yi Yang, Mengning Xu, Xingfu Li, Cong Li, Hongjiang Pan, Jingran Yang, Hao Zhou, Xinkun Zhu, Yuntian Zhu
Summary: Nanocrystallization can improve the strength and hardness of metallic materials, but sacrifice ductility. Heterostructured materials with outstanding work hardening capability offer a solution. In this study, a gradient structured Cu-Al alloy was produced through surface mechanical attrition treatment (SMAT). The alloy exhibited increased yield strength and maintained high ductility. Low stacking fault energy played a significant role in enhancing strain hardening.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Nanoscience & Nanotechnology
Hamid Ghorbani, Roohollah Jamaati
Summary: In this study, a high-strength and high-toughness Al-Zn-Mg-Cu/pure Al laminated composite with a heterogeneous microstructure was manufactured using the compression bonding process. The four-layer sample showed strong bonding between layers and exhibited significantly increased strength and toughness compared to the as-received alloy. On the other hand, the three-layer sample had weak bonding between layers and showed a large extent of delamination. Both samples displayed a heterogeneous fracture behavior.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
G. Kamalakshi, Prita Pant, M. P. Gururajan
Summary: This study uses Molecular Dynamics (MD) simulations to show anomalous softening in Cu-Al alloys. In addition to heterogeneous nucleation at solute sites, the reduction in stacking fault energy with alloying addition promotes the nucleation of partial dislocation loops.
COMPUTATIONAL MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Junkai Wang, Bingkang Li, Chuan-Hui Zhang
Summary: The influence of substitution doping of Ca, Co and Si atoms on the tensile and shear deformation mechanisms of Al/Al2Cu interfaces were investigated using first-principles calculations. The most stable interface structure in the Al-Al2Cu configuration was found to be the Al2 terminated interface. Doping atoms increased the elongation of the interface structure due to electron enrichment, with Co-doped interface showing the highest ductility. The slip resistance was found to be higher in Ca-doped interface compared to other interfaces, which can be attributed to electron enrichment effects.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Morteza S. Ardakani, S. L. Kampe, Jaroslaw W. Drelich
Summary: This study investigates the microstructure and tensile properties of three different Zn-xCu-yMn-0.05Mg alloys. The results show that the dissolution of secondary phases and grain coarsening can effectively suppress strain softening and strain rate sensitivity. Additionally, adjusting the fraction of secondary phases and grain size can eliminate the effect of dynamic recrystallization on the alloys. The formulated alloys exhibited good thermal stability and were not susceptible to natural aging.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Yaocheng Zhang, Li Yang, Lianbei Sun, Yingying Zhang, Song Pang, Tao Meng
Summary: The microstructure of spray deposited and extruded Al-Zn-Mg-Cu alloy after regression re-aging treatment was investigated. The main precipitate phases were short rod-shaped eta', coarse rod-shaped h and G.P. zones. The mechanical properties were influenced by strain rate and sample thickness, which determined the yield and ultimate tensile strength of the alloys. The alloy exhibited mixed-mode fracture and strain hardening was conducted by deformation texture.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Vanja Asanovic, Dragan Radonjic, Jelena Scepanovic, Darko Vuksanovic
Summary: The correlation between thermomechanical parameters and chemical composition in Cu-Zn-Al alloys was studied, showing that alloys with lower aluminum content exhibited better properties, recoverable strain, and shape memory recovery during tensile testing.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Nanoscience & Nanotechnology
Hyung-Jun Cho, Yeonggeun Cho, Gang Hee Gu, Hyoung Seop Kim, Sunghak Lee, Sung-Joon Kim
Summary: The effects of Cu as an element on the deformation mechanisms and tensile ductility of austenitic stainless steels (ASSs) were investigated by varying the tensile strain rate. The study found that Cu and strain rate have different effects on the elongation, and there is a competition between two mechanisms.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Huan Wei, Jianwen Jia, Huayun Du, Caizhi Zhou, Yinghui Wei, Lifeng Hou
Summary: This study examines the influence of stacking fault energy (SFE) on the deformation mechanism during surface mechanical attrition treatment in Cu-Zn alloys. The results indicate that the deformation mechanism is directly correlated with the SFE, with deformation twinning dominant in Cu-20Zn alloy and dislocation slipping dominant in Cu-2Zn alloy. Microbands, likely formed by the splitting of high-density dislocation walls, were observed as the predominant microstructural features in both Cu-Zn alloys.
MATERIALS SCIENCE AND TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
W. X. Zhang, Y. Z. Chen, L. Zhou, T. T. Zhao, W. Y. Wang, F. Liu, X. X. Huang
Summary: Si is a common alloying element in Al alloys, mainly used to form precipitates and improve castability. In this study, the effect of Si as a solute on work hardening and dislocation behaviors of Al-Si alloys was investigated. It was found that the addition of Si increased the tensile strength and ductility of the alloys, with higher Si concentrations resulting in greater improvements. The enhanced work hardening was attributed to the change in dislocation configuration and the weakening of stacking-fault energy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Lei Zhang, Shuaijie Zhang, Kangxin Ouyang, Yihuan Zhou, H. Huang, Pian Xu
Summary: The microstructure and mechanical properties of as-cast Mg-Er-Cu, Mg-Er-Ni, and Mg-Er-Zn alloys prepared by conventional ingot metallurgy have been studied. The 18R long period stacking ordered (LPSO) phases in all three alloys solidify directly from the melt. Differences exist in the tensile strength and ductility among the three alloys.
ADVANCED ENGINEERING MATERIALS
(2021)
Article
Chemistry, Physical
Jing Wei, Hongji Sun, Dechuang Zhang, Lunjun Gong, Jianguo Lin, Cuie Wen
Article
Multidisciplinary Sciences
Xiaoxiang Wu, Surendra Kumar Makineni, Christian H. Liebscher, Gerhard Dehm, Jaber Rezaei Mianroodi, Pratheek Shanthraj, Bob Svendsen, David Buerger, Gunther Eggeler, Dierk Raabe, Baptiste Gault
NATURE COMMUNICATIONS
(2020)
Correction
Multidisciplinary Sciences
Xiaoxiang Wu, Surendra Kumar Makineni, Christian H. Liebscher, Gerhard Dehm, Jaber Rezaei Mianroodi, Pratheek Shanthraj, Bob Svendsen, David Buerger, Gunther Eggeler, Dierk Raabe, Baptiste Gault
NATURE COMMUNICATIONS
(2020)
Article
Materials Science, Multidisciplinary
Xiaoxiang Wu, Zhiming Li, Ziyuan Rao, Yuji Ikeda, Biswanath Dutta, Fritz Koermann, Joerg Neugebauer, Dierk Raabe
PHYSICAL REVIEW MATERIALS
(2020)
Article
Materials Science, Multidisciplinary
D. Mayweg, L. Morsdorf, X. Wu, M. Herbig
Summary: The white etching crack (WEC) phenomena in high carbon steels affect bearings, and research shows that it is associated with the carbon element. Analyzing the carbon content and distribution in 100Cr6 bearings can provide insights into the formation mechanism of white etching cracks.
Article
Nanoscience & Nanotechnology
Xiaoxiang Wu, David Mayweg, Dirk Ponge, Zhiming Li
Summary: Twinning induced plasticity and phase transformation induced plasticity are two effective mechanisms for achieving a good combination of strength and ductility in metallic materials. Grain refinement can further enhance the strength-ductility combination by the grain boundary strengthening effect. Our investigation revealed that TWIP HEA alloy showed a simultaneous increase in strength and ductility after grain refinement, while TRIP HEA alloy exhibited increased strength but a loss of ductility. The formation of nano-sized sigma precipitates in the TRIP HEA alloy during grain refinement contributed to increased strength but also led to early fracture.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Fabian Kies, Xiaoxiang Wu, Bengt Hallstedt, Zhiming Li, Christian Haase
Summary: This study successfully designed a novel MPEA material with excellent mechanical properties by adding Ni and Co to high-manganese steel. Through a combination of experimental and thermodynamic screening, thermo-mechanical processing, and investigation of active mechanisms, the MPEAs showed significant precipitation and dispersion hardening, leading to improved strength and ductility synergy.
MATERIALS & DESIGN
(2021)
Article
Nanoscience & Nanotechnology
Junyang He, Xiaoxiang Wu, Yueling Guo, Surendra Kumar Makineni
Summary: This study elucidates the crucial role of Mo in a NiCoCr medium-entropy alloy, providing necessary conditions for σ-phase precipitation through the migration of recrystallized grain boundaries and segregation of Cr/Mo solutes, emphasizing Mo's role in overcoming the strength-ductility trade-off in the alloy.
SCRIPTA MATERIALIA
(2021)
Article
Multidisciplinary Sciences
Chang Liu, Zhiming Li, Wenjun Lu, Yan Bao, Wenzhen Xia, Xiaoxiang Wu, Huan Zhao, Baptiste Gault, Chenglong Liu, Michael Herbig, Alfons Fischer, Gerhard Dehm, Ge Wu, Dierk Raabe
Summary: The authors present a 'reactive wear protection' strategy to achieve superior wear resistance through the in situ formation of strong and deformable oxide nanocomposites on a surface induced by friction. This strategy offers a pathway for designing ultra-wear resistant alloys by turning brittle oxides into strong and deformable surfaces for improving wear resistance.
NATURE COMMUNICATIONS
(2021)
Article
Nanoscience & Nanotechnology
Yueling Guo, Junyang He, Zhiming Li, Lina Jia, Xiaoxiang Wu, Changmeng Liu
Summary: Introducing intermetallic silicides into refractory high entropy alloys can significantly improve their mechanical properties, especially at high temperatures. Si alloying enables grain refinement and the formation of intergranular silicides, resulting in improved compressive strength and deformation compatibility of the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Ge Wu, Chang Liu, Andrea Brognara, Matteo Ghidelli, Yan Bao, Sida Liu, Xiaoxiang Wu, Wenzhen Xia, Huan Zhao, Jing Rao, Dirk Ponge, Vivek Devulapalli, Wenjun Lu, Gerhard Dehm, Dierk Raabe, Zhiming Li
Summary: By mimicking the mutual stabilization principle from symbiotic ecosystems, a new alloy design approach has been used to develop thermally stable, ultrastrong and deformable crystal-glass nanocomposites. The elemental partitioning among adjacent amorphous and crystalline phases leads to their mutual thermodynamic and mechanical stabilization, opening up a new symbiotic approach for stable, strong and ductile materials.
Article
Materials Science, Multidisciplinary
Yunsong Zhao, Yushi Luo, Mai Zhang, Bin Gan, Kunquan Yuan, Xiaoxiang Wu
Summary: Ru addition in Ni-based single crystal superalloys significantly enhances creep life by forming a mature dislocation network and suppressing topological-close packed phases.
MATERIALS TODAY COMMUNICATIONS
(2022)
Editorial Material
Materials Science, Multidisciplinary
Yiping Lu, Xiaoxiang Wu, Zhenghong Fu, Qiankun Yang, Yong Zhang, Qiming Liu, Tianxin Li, Yanzhong Tian, Hua Tan, Zhiming Li, Tongmin Wang, Tingju Li
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Kunquan Yuan, Yan Jiang, Shichao Liu, Songsong Xu, Xinzhong Li, Xiaoxiang Wu
Summary: This study investigates the effect of carbon on TWIP and TRIP alloys, and finds that carbon doping can simultaneously enhance the strength and ductility of the alloys. This provides insights for designing high-performance alloys.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Yan Jiang, Songsong Xu, Xiuhua Lu, Xiaoxiang Wu, Liang Chen, Shichao Liu, Xinzhong Li
Summary: The microstructure and mechanical properties of 6 wt.% Mn-doped martensitic steel were examined using EBSD, TEM, and SANS. The steel exhibited a high yield strength of approximately 1.83 GPa and elongation-to-failure of around 7% under peak aging, with a precipitation strengthening of approximately 853 MPa, much higher than that observed in lower Mn-doped steels. The microstructure of the steel consists of alpha'-martensite and equiaxed alpha-ferrite, along with a significant proportion (approximately 62.3%) of low-angle grain boundaries. The Mn doping significantly increases the size of Cu/NiAl nanoparticles, which in turn improves the yield strength through precipitation-strengthening mechanisms.
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)
