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
Chemistry, Physical
Xiaomin Liu, Masashi Nakatani, Hongliang Gao, Bhupendra Sharma, Hongjiang Pan, Zhengrong Fu, Xingfu Li, Kei Ameyama, Xinkun Zhu
Summary: The study focused on the deformation mechanism and mechanical properties of pure copper and copper-zinc alloys with low stacking fault energy. It was found that Cu-30%Zn samples exhibited higher yield strength and better ductility compared to pure Cu samples. Surface mechanical attrition treatment (SMAT) resulted in an optimized combination of strength and ductility in the Cu-30%Zn samples.
JOURNAL OF ALLOYS AND COMPOUNDS
(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
Yiming Chen, Hao Lv, Yunxuan Zhou, Hong Yang, Quan Dong, Xiaoying Qian, Yi Lin, Jun Tan, Xianhua Chen, Bin Jiang, Fusheng Pan
Summary: The low-cost Mg-10Zn-1Al-0.5Cu-0.3Mn alloy was successfully fabricated by a rapid-setting water-cooling method, and the addition of MgCO3 can decrease the average grain size of the alloy. The alloy with MgCO3 addition showed higher ultimate tensile strength and elongation in the solid solution state. The formation of MnAl2O4 phase with a strong interface with the Mg matrix phase was observed.
MATERIALS & DESIGN
(2023)
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
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
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
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
Nanoscience & Nanotechnology
Naveen Manhar Chavan, P. Sudharshan Phani, M. Ramakrishna, L. Venkatesh, Prita Pant, G. Sundararajan
Summary: Cold spray deposition involves unique combination of high strain rate and moderate to high strain deformation, leading to significant grain refinement and deformation twinning in Cu and Cu-Al alloys. Experimental observations align well with theoretical predictions, showing significant heterogeneity in cold spray coatings and identifying factors influencing hardness. Twin mediated deformation mechanism is found to explain the lower boundary strengthening in presence of fine twins.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
P. Emadi, B. Andilab, K. Borodianskiy, C. Ravindran
Summary: The use of lightweight alloys, such as magnesium, is crucial for improving fuel efficiency and reducing emissions in automobiles, as well as increasing the range of electric vehicles. This study investigated the effects of SiC nanoparticles on the microstructure and mechanical properties of Mg-Al-Zn-Mn alloy composites. The addition of SiC resulted in significant grain refinement, more uniform phase dispersion, and improved tensile strength, making it a promising material for strengthening light alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Liying Cui, Zhan Zhang, X. -Grant Chen
Summary: This study investigated the microstructural evolution and mechanical properties of five lightweight Al-Cu-Mg-Zn entropy alloys. The alloys exhibited lightweight characteristics and multiphase features. With increasing Cu and other element contents, the volume fraction of intermetallic compounds (ICs) increased, leading to improved yield strength (YS) and reduced plasticity. Alloy 5 (Al77Cu17Zn3Mg2Cr1) showed the highest YS at room temperature and retained the highest YS at 300 degrees C after thermal exposure, making it promising for elevated-temperature applications.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Zheng Zhang, Hongjiang Pan, Lifang Meng, Jinxu Zhang, Xu Yang, Hongliang Gao, Yulan Gong, Baipo Shu, Xinkun Zhu
MATERIALS TRANSACTIONS
(2019)
Article
Materials Science, Multidisciplinary
Jinxu Zhang, Yang Cao, Hongliang Gao, Xu Yang, Baipo Shu, Yuntian T. Zhu, Bhupendra Sharma, Kei Ameyama, Xinkun Zhu
MATERIALS TRANSACTIONS
(2020)
Article
Metallurgy & Metallurgical Engineering
Huan Lin, Mao-sheng Yang, Bai-po Shu
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
(2020)
Article
Nanoscience & Nanotechnology
Xiaomin Liu, Hongliang Gao, Haijun Wu, Hongjiang Pan, Baipo Shu, Yi Yang, Huan Liu, Fei Yang, Xinkun Zhu
Summary: Pure Ti rods were fabricated by hot extrusion and further processed by rotary swaging in this study. The effects of annealing temperature on the microstructure and mechanical properties were investigated. Annealing at 500 degrees C resulted in a desirable combination of high yield strength and remarkable uniform elongation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Jingran Yang, Le Xu, Hongliang Gao, Xingfu Li, Hongjiang Pan, Baipo Shu, Takamoto Itoh, Yuntian Zhu, Xinkun Zhu
Summary: The gradient structured samples with grain size gradient and a coarse-grained layer exhibit superior mechanical properties. Double-sided GS Cu shows higher yield strength and ductility compared to single-sided GS Cu due to better constraint. Global mutual constraints in GS layers play a positive role in enhancing mechanical properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Jian Zhang, Yun Lei, Ning Wang, Ping Yang, Xinkun Zhu, Baipo Shu
Summary: Annealing of laminated materials at moderate temperatures can lead to hardening instead of softening due to the presence of surface laminated interfaces and high-density growth twins in the interfacial transition zones. The annealed samples showed an increase in strength and ductility compared to the non-laminated samples. The hardening is not attributed to phase transformation.
MATERIALS RESEARCH EXPRESS
(2022)
Article
Materials Science, Multidisciplinary
Yi Yang, Yulan Gong, Xingfu Li, Huan Liu, Cong Li, Jingran Yang, Hongjiang Pan, Baipo Shu, Chao Deng, Junqi Fang, Xinkun Zhu
Summary: Two types of heterogeneous structures were prepared by controlling different surface mechanical attrition treatment (SMAT) time, and their effects on stress and mechanical properties were systematically investigated. The results showed that Cu materials with bimodal grain size structure (BGSS) and gradient structure (GS) suppressed strain localization, leading to increased strength and ductility.
MATERIALS RESEARCH EXPRESS
(2022)
Article
Materials Science, Multidisciplinary
Ping Yang, Ning Wang, Jian Zhang, Yun Lei, Baipo Shu
Summary: In this study, oxygen-containing functional groups were grafted onto the surface of carbon nanotubes (CNTs) to improve their dispersibility in an electrolyte. The characterization results showed that the functionalized CNTs had better dispersibility in composites compared to unfunctionalized CNTs. The addition of CNTs enhanced the wear resistance of the nickel matrix and reduced the coefficient of friction (COF) of the composites.
MATERIALS RESEARCH EXPRESS
(2022)
Article
Materials Science, Multidisciplinary
Renfu Wang, Yonghua Duan, Mingjun Peng, Baipo Shu, Yiren Wang, Mengnie Li, Caiju Li, Shanju Zheng, Huarong Qi, Ruijiao Jia
Summary: Laminated metal composites consisting of Al and Zn were prepared using hot rolling and low temperature annealing, and the influence of the diffusion layer thickness at the interface on strengthening and toughening mechanism was studied. The results showed that the grain recrystallization and growth occurred with an increase in annealing temperature and time, leading to the formation of a diffusion layer at the interface. The yield and tensile strengths initially increased and then decreased with increasing annealing time and temperature. The tensile fracture morphology exhibited multiple deep dimples. In the rolling state, the micro-hardness value at the interface was intermediate between Al and Zn.
Article
Materials Science, Multidisciplinary
Hongshan Yang, Yulin Chen, Hao Feng, Ping Yang, Jian Zhang, Baipo Shu
Summary: Surface mechanical attrition treatment (SMAT) was used to refine the surface of pure copper and study its electrochemical corrosion behavior in a 3.5 wt% NaCl solution. Fine crystalline copper exhibited higher corrosion resistance than coarse crystalline copper, and grain refinement further improved the corrosion resistance under annealing conditions. The enhanced passivation of the surface passivation film and reduced dissolution rate of the anode contributed to the improved corrosion resistance of fine crystalline copper.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Hao Feng, Yulin Chen, Hongshan Yang, Ping Yang, Jian Zhang, Baipo Shu
Summary: The effects of different aging treatments on an Al-Cu-Mg-Li alloy were investigated. Double aging treatment improved the strength, hardness, and corrosion resistance of the alloy but decreased its elongation. The corrosion morphology and fracture morphology changed with the aging process. Transmission electron microscopy results showed differences in the T1 phase between different aging states. The optimal process for the Al-Li alloy was determined to be pre-aging at 100°C for 4 hours and final aging at 160°C for 24 hours.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Yulin Chen, Hongshan Yang, Hao Feng, Ping Yang, Jian Zhang, Baipo Shu
Summary: The deposition mechanism of Ni-Co alloys with different cobalt compositions was investigated using various electrochemical techniques. It was found that increasing the CoSO4 content in the plating solution decreased the charge transfer resistance during nucleation and reduced the activation energy of nucleation/growth. The Ni-Co alloy exhibited a more pronounced (1 1 1) orientation and enhanced corrosion resistance compared to pure nickel. Plating with 10 wt% Co provided the best corrosion resistance.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Ping Yang, Yulin Chen, Jian Zhang, Baipo Shu
Summary: The study of the effect of carbon nanotubes (CNTs) on the electrodeposition of nickel is important for the preparation of CNTs/Ni composites. Different analysis methods were used to investigate the nucleation mechanism and properties of electrocrystallization. The results showed that increasing the CNTs concentration shortened the time required for 3D growth, improved the polarizability of electrodeposited nickel, and made the Ni nucleation easier. The introduction of CNTs also changed the growth orientation of pure nickel.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Yixin Qin, Kai Zeng, Baipo Shu, Baoying Xing, Xiaocong He
Summary: This study systematically explored the influence of adhesive particle fillers on the mechanical performance of bonded joints. By using finite element models and response surface methodology, the optimal set of process parameters was determined. The findings revealed the significant impact of the interaction between volume fraction and adhesive layer thickness on shear strength, and the major effect of the interaction between particle size and adhesive layer thickness on peel strength.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Jinxu Zhang, Hongjiang Pan, Hongliang Gao, Xu Yang, Xingfu Li, Xiaomin Liu, Baipo Shu, Cong Li, Yulan Gong, Xinkun Zhu
LETTERS ON MATERIALS
(2019)
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)
