Article
Materials Science, Multidisciplinary
Cong Dang, Xiaoxu Dou, Jingfeng Wang, Di Yu, Jinxing Wang, Ruopeng Lu, Hua Hou, Yuhong Zhao
Summary: Different solution treatments at different temperatures were conducted on the Mg-9.55Gd-2.27Y-1.28Zn-0.55Zr-0.11Nd alloy, resulting in different phase constitutions. The Mg3RE-type eutectic phases transformed into long period stacking order (LPSO) phases with various morphologies after solution treatment. Increasing the solution temperature led to larger grain size, more lamellar LPSO phases, and segregation of Zr element. The special spatial structure consisting of prismatic b' precipitates, basal g' precipitates, and lamellar LPSO phases hindered dislocation movement effectively, leading to high strength, but also caused premature cracking and decreased ductility.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Heqian Song, Lunyong Zhang, Zhiliang Ning, Yufeng Wang, Junying Yi, Fuyang Cao, Jianfei Sun
Summary: The study found that the surface oxidation film defect of Mg-Gd-Y-Zr alloy during solidification is related to the difference in thermal expansion coefficient and can cause the formation of bifilm defects. When the magnesium alloy melt fills the crack, Zr precipitates into crystal nucleus and Y2O3 accumulates.
Article
Materials Science, Multidisciplinary
Zehua Yan, Yandong Yu, Jiahao Qian, Junting Luo, Yanchao Sang
Summary: A high-strength Mg-based alloy bar was successfully fabricated by extrusion and two-step aging processes. The extent of extrusion was found to affect the refinement mechanisms of the alloy, with larger extents leading to finer grains and eutectic phases. Peak-aged treatment resulted in increased strength due to the presence of beta' phase and LPSO phase. Over-aging led to reduced performance as lamellar precipitates and spherical beta' phase increased in size.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Wenchao Hu, Wanyi Huang, Ying Sun, Wen Zhang, Lili Tan, Song Zhang, Guangcai Ma, Dan Zhang, Qiang Wang
Summary: In this study, fatigue properties of Mg-2Zn-0.5Zr-0.5Nd alloy were tested and it was found that the fatigue life varies with different frequencies. It was also observed that the alloy exhibits poorer fatigue resistance in 0.9 wt% NaCl solution.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Xiaoxiao Wei, Li Jin, Chuanlai Liu, Fenghua Wang, Shuai Dong, Jie Dong
Summary: The ultrahigh strength Mg-10Gd-4Y-1.5Zn-0.5Zr alloy is prepared through a combination of extrusion, packforging, and aging treatment, resulting in a bimodal grain structure, high number density of nanoprecipitates, and LPSO/SFs. The alloy's mechanical properties are further enhanced by the formation of bimodal grain structure and numerous dispersive precipitates during the processing, including the precipitation of SFs and dynamic dissolution of the LPSO phase.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Metallurgy & Metallurgical Engineering
Zhenduo Ma, Guo Li, Qiang Peng, Xiaodong Peng, Daolun Chen, Hanzhu Zhang, Yan Yang, Guobing Wei, Weidong Xie
Summary: A new type of magnesium alloy was manufactured using centrifugal casting and ring-rolling process, and the effects of ring-rolling reduction amount on the alloy's properties were studied. The results showed that the alloy exhibited high strength and ductility at an appropriate reduction amount. Furthermore, several strengthening mechanisms were identified.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
Xiaoya Chen, Quanan Li, Jinglong Yan, Peijun Chen
Summary: This study systematically investigates the microstructure and high temperature mechanical properties of Mg-10Gd-3Y-xNd-0.5Zr alloy. It is found that Nd element promotes the precipitation phase and forms a new phase Mg41Nd5, while the appropriate amount of Nd refines the grain size. The Mg-10Gd-3Y-xNd-0.5Zr alloy exhibits excellent mechanical properties at both room and high temperatures, with significant ultimate tensile strengths. The main strengthening phases are p phase, p' phase, and 18-LPSO phase. Moreover, the alloy shows excellent high-temperature creep resistance and the creep mechanism changes with temperature and stress.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Zixiang Yan, Qiang Yang, Fanzhi Meng, Rui Ma, Rirong Bao, Xiaojuan Liu, Jian Meng, Xin Qiu
Summary: In this study, interfacial precipitation in {10 (1) over bar2} twin boundaries of a cold-stamped Mg-12Gd-1.2Zn-0.4Zr alloy was investigated, revealing the formation of new interfacial phases which accelerated peak-aging and improved the alloy's strength. This periodic segregation of Gd + Zn atoms in the twin boundaries played a crucial role in enhancing the mechanical properties of the alloy.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Metallurgy & Metallurgical Engineering
Zhenzhen Gui, Fen Wang, Junyi Zhang, Dexin Chen, Zhixin Kang
Summary: Magnesium alloy processed by equal-channel angular pressing (ECAP) shows excellent microstructure refinement and enhanced strength and hardness, supporting its applications in various industries. Pre-treatment of solution-treated magnesium alloy investigated the precipitate behavior and microstructure evolution during ECAP, resulting in improved comprehensive mechanical properties.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Metallurgy & Metallurgical Engineering
Liu-wei Zheng, Yong-peng Zhuang, Jun-jian LI, Hong-xia Wang, Hang LI, Hua Hou, Li-fei Wang, Xiao-ping Luo, Kwang Seon Shin
Summary: The effect of Nd addition on the microstructure and mechanical properties of as-extruded Mg-9Gd-0.5Zr alloy is investigated. Nd addition results in the disappearance of elongated non-dynamic recrystallized grains and the formation of uniformly distributed dynamic recrystallized grains. In addition, the precipitation of nano-Mg5(Gd,Nd) particles enhances the strength and ductility of the alloy.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Nanoscience & Nanotechnology
Bin Lei, Zhihua Dong, Yan Yang, Bin Jiang, Ming Yuan, Huabao Yang, Qinghang Wang, Guangsheng Huang, Jiangfeng Song, Dingfei Zhang, Fusheng Pan
Summary: The microstructure and mechanical properties of designed Mg-4Gd-0.5Zr-xZn (x = 0, 0.2, 0.5, 1.0 and 1.5 wt%) alloys were investigated, with a focus on the effect of Zn. The results showed that the alloys exhibited exceptional ductility, with Mg-4Gd-0.5Zr-1.0Zn and Mg-4Gd-0.5Zr-1.5Zn alloys having the highest elongation to fracture. The good strength-ductility balance in the alloys was attributed to grain refinement, texture softening, and the precipitation of Zn-containing second phases.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
K. N. Chaithanya Kumar, Mohit Madavi, T. Ram Prabhu, K. S. Suresh
Summary: Gd and Nd added Mg-Rare Earth (Mg-RE) alloys have excellent combinations of high specific strength, high specific stiffness, good damping capacity, and better creep life, making them attractive for high-temperature applications. However, their hot workability has been limited, leading to applications only in the cast form. This study investigates the hot deformation behavior of Mg-Zn-Zr-Nd-Gd alloy and correlates it with microstructure and texture. Serrated flow behavior due to dynamic strain aging, maximum strain rate sensitivity, and the suppression of dynamic recrystallization behavior are observed.
Article
Chemistry, Multidisciplinary
Jinshu Xie, Jinghuai Zhang, Shujuan Liu, Zihao You, Zhi Zhang, Tengfei Zhao, Xiaobo Zhang, Ruizhi Wu
Summary: A high-performance Mg-10Gd-4Dy-1.5Ag-1Zn-0.5Zr (wt.%, EQ142X) alloy was designed using multi-element composite addition, resulting in high yield strength (approx. 396 MPa) and ultimate tensile strength (approx. 451 MPa) after hot extrusion and ageing. The high strength is attributed to fine grains and nano-precipitates, especially beta' and gamma nano-precipitates, which act as the main strengthening phases. The introduction of nano-precipitates network into the fine-grained structure is proposed as an effective strategy for developing high-strength Mg alloys.
Article
Materials Science, Multidisciplinary
Liuwei Zheng, Xiangpeng Zhang, Hongxia Wang, Lifei Wang, Hua Hou, Hang Li, Seon Shin Kwang
Summary: In this study, the microstructure evolution and strengthening mechanisms of homogenized Mg-9Gd-2Nd-1.6Zn-1Zr alloys subjected to various equal channel angular pressing (ECAP) passes were systematically investigated. After 8 ECAP passes, the grain size was dramatically refined, while excellent mechanical properties were achieved after 4 passes.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
S. Mosadegh, M. Aghaie-Khafri, B. Binesh
Summary: The hot deformation behavior of Mg-5Gd-2.5Nd-0.5Zn-0.5Zr alloy was investigated through compression tests at temperatures ranging from 350 to 500 degrees C and strain rates from 0.001 to 1 s(-1). Microstructural evolution showed a high rare-earth metal constituent affecting the deformation mechanisms, including twining below 350 degrees C and dynamic recrystallization and second phase interaction above 350 degrees C. The flow stress was well fitted by the hyperbolic sine equation with an average activation energy of 297.81 kJ/mol.
PHILOSOPHICAL MAGAZINE
(2021)
Article
Materials Science, Multidisciplinary
Jinshuo Zhang, Guohua Wu, Liang Zhang, Xiaolong Zhang, Chunchang Shi, Xin Tong
Summary: The combination of Sc-alloying and optimized ageing scheme resulted in a significant improvement in the strength and ductility of the cast aluminum alloy. The presence of Sc in the alloy contributed to increased hardness and superior mechanical properties, while different ageing temperatures influenced the alloy's response time.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
He Xie, Guohua Wu, Xiaolong Zhang, Wencai Liu, Wenjiang Ding
Summary: This study investigates the specific role of Gd element on the microstructural evolution and mechanical properties of Mg-3Nd-0.2Zn-0.5Zr alloy. It is found that increasing Gd content leads to reduced grain size and substantial enhancements in alloy strength. Microstructure characterization shows that the improved solid-solution strengthening effect from Gd additions plays a key role in the significant strength improvements obtained in the as-quenched alloys.
MATERIALS CHARACTERIZATION
(2021)
Article
Metallurgy & Metallurgical Engineering
Ying Qin, Guo-hua Wu, Andrej Atrens, Xiao-long Zhang, Liang Zhang, Wen-jiang Ding
Summary: Ceramic coating was prepared on cast Al-Cu-Li alloy by micro-arc oxidation in a silicate electrolyte solution with additives including Na2WO4 and NaOH. The addition of NaOH promoted the formation of oxides, increased layer thickness, and improved the corrosion resistance of the coated alloy. The best corrosion resistance was achieved with an alumina coating formed in the electrolyte containing 7 g/L NaOH.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2021)
Article
Chemistry, Physical
Guohua Wu, Xiaolong Zhang, Liang Zhang, Yixiao Wang, Chunchang Shi, Peisen Li, Guangxiao Ren, Wenjiang Ding
Summary: This study investigated the microstructural evolution, coarsening kinetics of main precipitates, and related mechanical characteristics of a newly-developed cast Al-Li-Cu-Mg-X alloy during aging at different temperatures. The increasing aging temperature led to significantly enhanced coarsening rate of the delta' phase, resulting in a decrease in strength. The best combination of strength and ductility was achieved in the alloy aged at 175 degrees C for 32 hours.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
Chunchang Shi, Guohua Wu, Liang Zhang, Xiaolong Zhang, Jiangwei Sun, Jinshuo Zhang, Yixiao Wang
Summary: The study revealed that the addition of Zn can significantly refine the grain and enhance the strength of the alloy; a specific solution treatment process can effectively remove second phases from the alloy; the addition of Zn can improve the comprehensive mechanical properties of the alloy.
JOURNAL OF MATERIALS RESEARCH
(2021)
Article
Nanoscience & Nanotechnology
Guoqing Zhang, Xin Tong, Guohua Wu, Liang Zhang, Huaiming Sui, Xiaolong Zhang
Summary: This study investigated the microstructural evolution of TIG repair welded joints and the effect of progressive solution treatments on grain coarsening. By proposing a two-step progressive T4 treatment method, abnormal grain coarsening was avoided while maintaining excellent comprehensive tensile properties. The progressive T4 treatment at lower temperatures effectively promoted the dissolution of eutectics and contributed to the aging hardening process by precipitating the evenly dispersed beta ' phase in the matrix.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Xiaolong Zhang, Guohua Wu, Liang Zhang, Song Pang, Guangling Wei, He Xie, Fangzhou Qi, Baode Sun
Summary: This study evaluated the effects of substituting Yb for Sc on the microstructure characteristics, age-hardening response, and mechanical performances of cast Al-2Li-2Cu-0.5 Mg-0.2Zr alloy. The results showed that the addition of 0.1wt% Yb accelerated the age-hardening response and promoted the precipitation of nanometric core-shell Al3Li/Al-3(Yb, Zr) precipitates, resulting in improved mechanical characteristics and microstructural stability compared to the base alloy.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Fangzhou Qi, Xiaolong Zhang, Guohua Wu, Wencai Liu, Lu Wen, He Xie, Shihao Xu, Xin Tong
Summary: The study found that in a 3.5% NaCl environment, the T4 heat-treated alloy exhibited the lowest corrosion rate and SCC susceptibility index, indicating the best corrosion resistance and SCC resistance performance.
MATERIALS CHARACTERIZATION
(2022)
Article
Metallurgy & Metallurgical Engineering
He Xie, Guohua Wu, Xiaolong Zhang, Zhongquan Li, Wencai Liu, Liang Zhang, Xin Tong, Baode Sun
Summary: The microstructure, aging behavior, and mechanical properties of cast Mg-3Nd-3Gd-xZn-0.5Zr (x = 0, 0.5, 0.8, 1 wt%) alloys were investigated. The addition of Zn led to the formation of Zn-Zr particles with different morphologies during solution treatment, influencing the precipitation behavior and subsequently the mechanical properties of the alloys. The best tensile properties were achieved in the alloy with 0.5 wt% Zn addition, with a yield strength of 179 MPa, ultimate tensile strength of 301 MPa, and elongation of 5.3% in peak-aged conditions.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Hao Ji, Guohua Wu, Wencai Liu, Xiaolong Zhang, Liang Zhang, Mingxu Wang
Summary: The origin of the age-hardening and age-softening response in Mg-10Li(-Zn)(-Er) alloys is studied. The age-hardening is attributed to the precipitation of the semi-coherent (Mg, Li)(3)Zn phase, while the age-softening is primarily caused by the gradual substitution of Mg atoms by Li/Zn atoms in the precipitate. The addition of Er retards the evolution of the (Mg, Li)(3)Zn precipitate, leading to a deceleration of age-softening in the alloy.
Article
Nanoscience & Nanotechnology
Xin Tong, Guohua Wu, Mark A. Easton, Ming Sun, David H. StJohn, Rui Jiang, Fangzhou Qi
Summary: The distribution of Zr in a commercial Mg-30Zr master alloy can be modified through tungsten inert gas arc re-melting with ultra-high frequency pulses, leading to a substantial reduction in grain size. The approach allows for refinement of Zr particle size and obtaining higher contents of soluble Zr and nanoscale Zr particles. This new method proposes a new approach to the design and fabrication of high-efficiency grain refiners.
SCRIPTA MATERIALIA
(2022)
Article
Nanoscience & Nanotechnology
Qiman Wang, Xin Tong, Guohua Wu, Junmin Zhan, Fangzhou Qi, Liang Zhang, Wencai Liu
Summary: The effects of heat input and pulse current on the micro-structural evolution and mechanical properties of tungsten inert gas (TIG) welded EV33 alloy were investigated. Increasing welding current or pulse current frequency resulted in larger grain size in the fusion zone. TIG welding with pulse current efficiently broke dendrites and promoted Zr particle dissolution, leading to a better grain refinement effect and more homogeneous microstructure. By optimizing the welding process, the highest joint efficiency of 88.4% with a good combination of strength and ductility was obtained.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(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)
