Article
Engineering, Multidisciplinary
ShiXin Li, HongXiang Jiang, YanQiang Li, LiLi Zhang, Hao Sun, Jie He, HaiCang Jiang, JiuZhou Zhao
Summary: The effects of minor Ce addition on the microstructures, tensile properties, and electrical conductivity of Al-Fe alloy were investigated. The results showed that Ce addition led to α-Al refinement, modification of the Al13Fe4 minority phase, and decrease in Si solid solubility. The grain refinement had negligible influence on the tensile strength, while the ductility and conductivity were simultaneously improved. The modification of the Al13Fe4 minority phase improved ductility, and the decrease in Si solid solubility increased electrical conductivity. This study provides a strategy to enhance both tensile properties and electrical conductivity of aluminum alloy.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2023)
Article
Chemistry, Physical
Chen Li, Qingshan Zhou, Mengnan Han, Shaohui Sha, Yuntian Luo, Xiaojing Xu
Summary: This study investigated the microstructure and mechanical properties of an Al-11Zn-3.1Mg-1.2Cu-0.2Zr-0.16Ti alloy with different Er contents. The inclusion of Er increased the density and volume fraction of L12-Al3(Er, Zr), which reduced re-crystallization tendency and improved grain refinement. However, excessive Er led to the formation of coarse intermetallic compounds and deterioration of mechanical properties. The alloy with 0.15 wt.% Er showed optimal mechanical properties, with a yield strength of 771.7 MPa, ultimate tensile strength of 785.9 MPa, and elongation of 9.5%.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Qi Sun, Jianzhong Zhou, Xiankai Meng, Pengfei Li
Summary: The mechanical properties and microstructure characteristics of 2024-T351 aluminum alloy after paint removal by laser cleaning were investigated. Surface microhardness and tensile strength of the samples were measured before and after laser cleaning. It was found that laser cleaning increased the surface microhardness by 10.6% and tensile strength by 8.4%. The enhancement was attributed to grain refinement and dislocation proliferation induced during the laser cleaning process.
Article
Materials Science, Multidisciplinary
Cong Chen, Xuni Yin, Wei Liao, Yunzhong Xiang, Ming Gao, Yi Zhang
Summary: Increasing the laser scanning frequency and amplitude can improve the proportion of equiaxed grains and reduce the average diameter in the weld, leading to increased elongation. The scanning laser helps to enhance the strength of the weld fusion zone and provides a new way to improve the strength, safety, and service life of new energy power batteries through even distribution of elements and strengthening phases.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Ceramics
Yuqian Zhou, Chao He, Qian Ma, Anze Shui
Summary: Aluminum titanate (Al2TiO5, AT) flexible ceramics modified with rare-earth oxides (La2O3 and Y2O3) were successfully prepared and analyzed by XRD and SEM. The addition of La2O3 and Y2O3 generated second-phase grains, which improved the flexural strength by strengthening the branch and deflection phenomena, and hindering crack propagation. The presence of second-phase grains also resulted in a decrease in grain size and degree of oriented arrangement.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Fatima Ezzohra El Garchani, Hassane Lgaz, Savas Kaya, Han-Seung Lee, Sobhy M. Ibrahim, Maryam Chafiq, Young Gun Ko, Moulay Rachid Kabiri
Summary: This study investigates the corrosion behavior and mechanical characteristics of aluminum alloy 2024 after quenching and aging heat treatments. The results show that the aging treatment enhances corrosion resistance and increases the alloy's strength.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Metallurgy & Metallurgical Engineering
Zijian Yu, Xi Xu, Kang Shi, Baotian Du, Xiuzhu Han, Tao Xiao, Shubo Li, Ke Liu, Wenbo Du
Summary: A low RE containing Mg-3Y-2Gd-1Nd-0.5Zr alloy with high strength-ductility synergy was successfully developed through combined processes of hot extrusion, hot rolling and ageing. The alloy exhibits excellent strength-ductility balance, better than many Mg-RE wrought alloys with higher RE concentration, and comparable to 6061 Al wrought alloy. A novel heterogeneous structure consisting of long-range chain-like structures and precipitate-free zones plays a key role in the concurrent strengthening and toughening of the alloy.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Engineering, Mechanical
Yuan Li, Jinxiang Liu, Weiqing Huang, Shuai Zhang
Summary: The microstructure and mechanical properties of top plate, force wall and bottom plate in low-pressure sand-casting aluminum alloy cylinder head were evaluated. The tensile properties are mainly controlled by dendrite arm spacing (DAS), and the fatigue performance is affected by porosity defects. Optimizing the casting process can improve fatigue performance.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Metallurgy & Metallurgical Engineering
Rania M. El-Shorbagy, Z. M. El-Baradie, Ahmed I. Abdel-Aziz
Summary: Friction stir processing (FSP) is an effective method for creating materials with fine grains and good properties. This research investigated the influence of FSP on the microstructure and mechanical properties of 2024 aluminum alloy with and without rare-earth and thermomechanical treatment. The results showed that the microstructures were significantly refined after adding rare-earth or applying the thermomechanical treatment, and were greatly improved after applying FSP to both conditions. The mechanical properties were significantly increased after applying multiple passes of FSP, with the best results achieved with two passes of FSP on the thermomechanically treated alloy.
INTERNATIONAL JOURNAL OF METALCASTING
(2023)
Article
Engineering, Manufacturing
Priyanka Agrawal, Sanya Gupta, Saket Thapliyal, Shivakant Shukla, Ravi Sankar Haridas, Rajiv S. Mishra
Summary: In-depth analysis of the microstructure of an AM alloy revealed promising properties for structural applications, with improved strength and ductility due to the presence of precipitates. The study utilized advanced microscopy techniques to study the microstructure and understand the mechanisms behind the enhanced tensile properties.
ADDITIVE MANUFACTURING
(2021)
Article
Automation & Control Systems
Huan-Wei Pei, Shu-Guo Zhang, Hong-Min Guo, Wen He, Xu-Bo Liu
Summary: This study investigates the mechanical properties and fracture behavior of normal 7075 aluminum alloy produced by rheoforming. The results show that the rheoformed 7075 alloy after T6 heat treatment exhibits good elongation to fracture and strength, with the presence of some defects.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Engineering, Manufacturing
H. Peng, D. L. Chen, S. F. Guo, H. Hong, K. H. Zheng, X. F. Bai, D. Y. Li, X. Q. Jiang
Summary: The present study investigated the microstructural changes at the Mg/Zn and Al/Zn interfaces of ultrasonic spot welded joints between a rare-earth containing ZEK100 magnesium alloy and an AA6022 aluminum alloy with a zinc interlayer. It was found that diffusion or reaction occurred at both interfaces, with faster reaction at the Mg/Zn interface due to higher Zn diffusion rate in Mg and lower eutectic temperature. Increasing welding energy led to thicker diffusion layer at both interfaces, but the layer at Al/Zn interface was thinner than that at Mg/Zn interface. Joining mechanisms involved mechanical interlocking and metallurgical bonding facilitated by grain refinement during ultrasonic spot welding. The peak tensile lap shear strength occurred at a welding energy of 1000 J, with failure at the diffusion layer of the Mg/Zn interface.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Review
Chemistry, Multidisciplinary
Shuai Zhang, Sandra Elizabeth Saji, Zongyou Yin, Hongbo Zhang, Yaping Du, Chun-Hua Yan
Summary: Alloying is an efficient methodology to improve the performance of metallic catalysts, rare-earth metal compounds can integrate the unique orbital structure and catalytic behavior of rare earth elements; these alloys provide an opportunity to tailor electronic properties, tune charged carrier transport, and enhance surface reactivity.
ADVANCED MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Huilong Zhong, Shengci Li, Zhiqian Zhang, Dehua Li, Hongling Deng, Jiqiang Chen, Liang Qi, Olanrewaju A. Ojo
Summary: This study evaluated the effects of rare earth elements (Er, Pr) on the microstructure, mechanical properties, and corrosion resistance of 7055 alloys. It was found that the addition of rare earth elements reduced the number of residual phases and increased the proportion of low angle grain boundaries (LAGBs). The 7055 alloy with Pr had the lowest number of residual phases, while the 7055 alloy with Pr and Er had the highest proportion of LAGBs. Compared to the untreated 7055 alloy, the alloys with rare earth elements exhibited improved elongation and corrosion resistance.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Siddharth Yadav, S. P. Tewari, J. K. Singh, S. C. Ram
Summary: This study investigated the microstructure, physical, and mechanical properties of die-cast A308 alloy subjected to mechanical vibration during solidification. The results showed that mechanical vibration can significantly improve the metallurgical and mechanical properties of the alloy, leading to reduced grain size, decreased porosity, and increased hardness and strength.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2022)
Article
Metallurgy & Metallurgical Engineering
Feng Guan, Wenming Jiang, Guangyu Li, Junwen Zhu, Junlong Wang, Guoliang Jie, Zitian Fan
Summary: The effect of vibration on the interfacial microstructure and mechanical properties of Mg/Al bimetal during preparation was investigated. The results showed that vibration can refine the interface phases, resulting in a more uniform distribution of Mg2Si and an increase in shear strength of the Mg/Al bimetal.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Ceramics
Lei Peng, Wenming Jiang, Li Yang, Zheng Chen, Guangyu Li, Feng Guan, Zitian Fan
Summary: Using 3D printing technology to prepare ceramic shells for precision investment casting offers a quick and efficient preparation process, but often results in low strength and accuracy. This paper proposes a silica sol room temperature dip coating treatment combined with high temperature sintering method to improve the strength and surface precision of ceramic shells prepared using binder jetting. The study shows that increasing the sol concentration and dip coating time significantly improves the mechanical properties and surface precision of the alumina ceramic shell.
CERAMICS INTERNATIONAL
(2022)
Article
Metallurgy & Metallurgical Engineering
Xiaolong Gong, Fuchu Liu, Xinwang Liu, Wenming Jiang, Zitian Fan
Summary: A composite inorganic salt core with good water solubility and formability was developed using potassium nitrate (KNO3) and potassium chloride (KCl) as base materials. Addition of low-cost bauxite powder as a reinforcing material further enhanced the properties of the composite salt core. The addition of bauxite powder increased bending strength and hardness, while slightly decreasing water solubility rate.
INTERNATIONAL JOURNAL OF METALCASTING
(2023)
Article
Engineering, Mechanical
Hui Wang, Zheng Huang, Jiabiao Yi, Wen Jiang, Zeng He
Summary: The form-finding and stability of tensegrities with additional cables were investigated. An energy minimization-based form-finding method was presented and validated. The stability and mechanical properties of tensegrities depended on the number and method of adding cables.
JOURNAL OF ENGINEERING MECHANICS
(2022)
Article
Metallurgy & Metallurgical Engineering
Guang-yu Li, Feng Guan, Wen-ming Jiang, Yuan-cai Xu, Zheng Zhang, Zi-tian Fan
Summary: Al/Mg bimetal prepared by lost foam solid-liquid compound casting was investigated regarding the effects of mechanical vibration on filling and solidification behavior, microstructure, and performance. The results showed that mechanical vibration significantly influenced the filling and solidification processes. It was observed that mechanical vibration increased filling rate and made it more uniform at different times. Additionally, the wettability between liquid AZ91D and A356 inlays was improved by mechanical vibration. The mechanical vibration also resulted in a more uniform temperature distribution in the casting, reducing the horizontal and vertical temperature gradient. Furthermore, the shear strength of the bimetal increased by 39.76% after applying mechanical vibration, attributed to the reduction of inclusions and Al12Mg17 dendrites, as well as the refinement and uniform distribution of Mg2Si particles in the Al/Mg bimetal interface.
Article
Materials Science, Multidisciplinary
Feng Guan, Wenming Jiang, Zheng Zhang, Junlong Wang, Guangyu Li, Zitian Fan
Summary: To enhance the bonding properties of Mg/Al bimetallic composites, rare earth Gd was added. The addition of Gd broke and dissolved the oxide film in the interface, significantly increasing the diffusion distance. Gd-rich precipitates and fine grain strengthening and precipitation strengthening of Mg2Si and Gd-rich precipitates strengthened the interface.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Bei Yuan, Dunming Liao, Wenming Jiang, Han Deng, Guangyu Li, Jianhua Gu
Summary: To achieve the lightweight goal of urban rail train braking system, friction stir lap welding (FSLW) was used to weld SiCp/ZL101 and ZL101 sheets, creating a new type of brake disc material. The influence of different tool tilt angles (TTAs) on the microstructure and mechanical properties of the welded joints was studied. The TTA had a significant impact on the microstructure and defect formation of the dissimilar FSLW joints, affecting the distribution of SiC particles, grain size, and hardness. The shear strength of the welding joints increased and then decreased with the increase of TTA, reaching the highest level at 3 degrees.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Multidisciplinary
Wen Jiang, Mengyue Wang
Summary: Through studying the genotype of Toxoplasma gondii, it was found that there are genetic differences in Central and South America. From the perspective of pathogen virulence evolution, it is discovered that transmission route is a key factor causing global genetic differences in Toxoplasma gondii, and the diversity of hosts does not always increase its virulence differences. The reproductive mode of Toxoplasma gondii and frequent human trades are prerequisites for the development of its virulence.
APPLIED MATHEMATICAL MODELLING
(2023)
Article
Environmental Sciences
Xiaolong Gong, Shengli Hu, Xinwang Liu, Mo Yang, Wenming Jiang, Zitian Fan
Summary: This study reports a flotation separation method for efficiently separating coal dust from foundry dust, with enhanced results through pre-soaking assisted mechanical stirring. Pre-soaking promotes the water-absorbing swelling of clay minerals, while mechanical stirring facilitates the dissociation of foundry dust, leading to improved flotation results. The optimal stirring speed and time were found to be 2400 rpm and 30 min, respectively. This pre-soaking assisted mechanical stirring method shows great promise for promoting flotation separation and complete recycling of foundry dust.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Materials Science, Multidisciplinary
Feng Guan, Wenming Jiang, Zheng Zhang, Guangyu Li, Junlong Wang, Zitian Fan
Summary: The combination of Gd addition and vibration was proposed to strengthen the interface of the Mg/Al bimetal manufactured by solid-liquid compound casting. The Gd improves the microstructure of the eutectic layer but tends to aggregate at the interface. The application of vibration with Gd addition solves the problem of Gd segregation, reduces the thickness of the IMC layer, and disperses the distribution of the Mg2Si phase in the IMC layer.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Chemistry, Physical
Qingqing Li, Feng Guan, Yuancai Xu, Zheng Zhang, Zitian Fan, Wenming Jiang
Summary: In this study, ultrasonic vibration treatment (UVT) was applied to improve the microstructure and bonding strength of A356/AZ91D bimetal processed by lost foam compound casting (LFCC). Results showed that UVT did not alter the composition of phases at the interface. The interface of the Al/Mg bimetal consisted of an intermetallic compound area and eutectic area. With increasing UVT duration, the Mg2Si particles in the intermetallic compound area became smaller and more uniformly dispersed, which was attributed to the removal of oxide film and the effects of UVT. The shear strength of the Al/Mg bimetal increased with UVT, reaching a maximum value of 56.7 MPa at a UVT duration of 5 s, which was 70.3% higher than that without UVT. The improved bonding and dispersion of Mg2Si particles contributed to the enhanced shear strength of the Al/Mg bimetal.
Article
Materials Science, Multidisciplinary
Xiwang Qie, Zheng Zhang, Qingqing Li, Feng Guan, Zitian Fan, Wenming Jiang
Summary: By combining vibration assisted treatment and Ni interlayer coating treatment, the microstructure of the compound casting Al/Mg bimetallic interface was improved and the bonding strength was enhanced.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Review
Metallurgy & Metallurgical Engineering
Guangyu Li, Wenming Jiang, Feng Guan, Zheng Zhang, Junlong Wang, Yang Yu, Zitian Fan
Summary: Mg/Al bimetal has broad application prospects, but the low joint strength between aluminum and magnesium poses a challenge. Researchers propose various strengthening methods to control the interface and improve the microstructure and properties of the bimetal.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Nanoscience & Nanotechnology
Qingqing Li, Yuancai Xu, Yanqing Niu, Zitian Fan, Linghui Yu, Wenming Jiang
Summary: In this study, A356/AZ91D bimetals were fabricated by ultrasonic vibration-assisted solid-liquid compound lost foam casting. The effects of interface treatment temperatures on the formation, microstructures, and mechanical properties of the Al/Mg interfaces were investigated. The results showed that ultrasonic vibration treatment improved the distribution and refinement of phase compositions at the Al/Mg interfaces, leading to increased microhardness and shear strength.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2024)
Article
Materials Science, Ceramics
Yanqing Niu, Wenming Jiang, Li Yang, Feng Guan, Zhiyuan Yang, Zitian Fan
Summary: This study used the binder jetting method to prepare a low-cost high strength soluble ceramic core. By reacting heavy calcium carbonate with nano-ZrO2, CaZrO3 was formed at high temperature, reducing the porosity and increasing the bending strength of the ceramic core. The formed CaZrO3 also provided the ceramic core with certain water resistance.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(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)
