Article
Materials Science, Multidisciplinary
Haitao Zhao, Junheng Gao, Guilin Wu, Honghui Wu, Chaolei Zhang, Yuhe Huang, Shuize Wang, Xinping Mao
Summary: Variant pairing is a critical factor in determining the morphology and boundary characteristics of transformation products. The conventional quantification method based on deviation angles may produce biased results. This research proposes a new quantification method using variant indexing and validates it by comparing experimental results.
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Shaoxin Zhou, Jiancan Yang, Yingchao Zhang, Peng Zhang, Zuoren Nie
Summary: Tungsten has poor processing performance and is prone to defects due to its brittleness. Investigating the effect of grain size on rotary swaging of sintered rods can improve the quality of the destination part. Increasing grain size within a certain range is advantageous for processing technology.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Nanoscience & Nanotechnology
Jianwen Le, C. J. Boehlert, Guangfa Huang, Jianwei Mao, Liming Lei, Yuanfei Han, Weijie Lu
Summary: This study confirms the role of TiB whiskers in the selection of alpha variants and investigates the dependence of the variant-selection degree on the cooling rate.
SCRIPTA MATERIALIA
(2022)
Article
Materials Science, Multidisciplinary
Meiying Li, Shun Wang, Tao Jia, Xianming Zhao
Summary: The mixed structure of lath bainite and martensite was successfully obtained in ultra-high-strength steel through isothermal transformation tests. The interweaving mode of lath bainite and martensite was revealed through colored metallography and band contrast analysis. Crystallographic characteristics were analyzed in terms of variant pairing, finding different variant pairs in regions with different band contrast values.
Article
Materials Science, Multidisciplinary
Xingqi Jia, Wei Li, Qi Lu, Kuan Zhang, Hao Du, Yuantao Xu, Xuejun Jin
Summary: A smart machine learning model with two-dimensional microstructure input terminals was developed to accurately predict the properties of steels containing martensite for low-temperature service. Improvements in prediction accuracy were achieved by incorporating comprehensive strengthening mechanisms and coupling of strengthening effects contained in multifarious input terminals, as well as the acquisition of information and cross correlation of substructures related to strengthening mechanisms.
MATERIALS & DESIGN
(2021)
Article
Nanoscience & Nanotechnology
Vibhor Atreya, Cornelis Bos, Maria J. Santofimia
Summary: This study identifies the characteristics of martensite that govern the extent of transformation-induced deformation in ferrite grains in DP steels. It was found that small austenite grains tend to transform into martensitic variants with a close-packed plane parallel relationship with adjacent ferrite grains, affecting the deformation of ferrite grains.
SCRIPTA MATERIALIA
(2021)
Article
Nanoscience & Nanotechnology
Hiroyuki Dannoshita, Hiroshi Hasegawa, Sho Higuchi, Hiroshi Matsuda, Wu Gong, Takuro Kawasaki, Stefanus Harjo, Osamu Umezawa
Summary: The role of dislocation structure on the work-hardening behavior during tensile deformation of quenched and tempered martensite was investigated. The study found that the elastic limit is not always dependent on the total dislocation density of martensite, and the dislocation arrangement parameter plays a guiding role in the strength increase of martensitic steels.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Jolan Bestautte, Szilvia Kalacska, Denis Bechet, Zacharie Obadia, Frederic Christien
Summary: Slow strain rate tests on hydrogen-containing specimens of PH13-8Mo maraging stainless steel revealed H-assisted subcritical quasi-cleavage cracking, which accelerated material failure. Fractographic analysis showed that quasi-cleavage consisted of flat brittle areas and rougher areas. Electron backscatter diffraction (EBSD) testing on a secondary subcritically grown crack revealed significant crystal lattice rotation and consequential plastic deformation concentrated between the main crack tip and the cracks located ahead of it. Quasi-cleavage consisted of {100} cleavage cracks connected by ductile ridges, suggesting a discontinuous mechanism involving the re-initiation of new cleavage cracks ahead of the main crack tip.
Article
Materials Science, Multidisciplinary
Xianfeng Liao, Linhan Li, Kalubi Ren, Yanlin Jia, Yong Pang, Zhu Xiao, Yanbin Jiang, Zhou Li
Summary: The effects of grain size, grain boundary type, and misorientation on the initiation of discontinuous precipitates in a Cue5Ni e1.25Si alloy are investigated in this study. It is found that smaller grain sizes result in a higher percentage of discontinuous precipitates. Only random grain boundaries are capable of initiating discontinuous precipitates, while coincident site lattice boundaries are not. There is also a difference in the initiation of discontinuous precipitates depending on the misorientation axis.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Vivian Tong, Helen Jones, Ken Mingard
Summary: The plastic deformation mechanisms of tungsten carbide at different temperatures and orientations are influenced by residual defect structures, but the relationship between them is still unclear. A study using lattice rotation axis analysis can discriminate different slip modes, and the experimental observations are consistent with the model proposed in this research.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Xiaoyan Wang, Shaopeng Li, Yuanfei Han, Guangfa Huang, Jianwei Mao, Weijie Lu
Summary: This study investigates the role of reinforcements in the microstructural evolution of titanium matrix composites (TMCs) during high-temperature fatigue, revealing a new phenomenon of twin nucleation. The presence of reinforcements enhances dislocation accumulation and promotes the rapid diffusion of elements, leading to an increase in local stress concentration and ultimately contributing to twin nucleation. This work contributes to a better understanding of the mechanism underlying TMC fracture during high-temperature fatigue.
SCRIPTA MATERIALIA
(2021)
Article
Nanoscience & Nanotechnology
Kai Zhang, Jing-Hua Zheng, Christopher Hopper, Chaoyang Sun, Jun Jiang
Summary: The study shows that the mechanical properties of magnesium alloy (WE43) can be significantly improved at cryogenic temperatures, especially when the compression direction is perpendicular to the extrusion direction. This improvement is attributed to enhanced pyramidal slip.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Nanoscience & Nanotechnology
Jingqi Zhang, Michael Bermingham, Joseph Otte, Yingang Liu, Matthew Dargusch
Summary: This study demonstrates how to achieve uniform and enhanced tensile ductility by minimizing the in-situ intrinsic heat treatment effect. By adjusting the heating and deposition time, the tensile ductility of Ti-5Al-5Mo-5V-3Cr material was successfully improved without notable variation.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Genki Saito, Tianglong Zhang, Norihito Sakaguchi, Munekazu Ohno, Kiyotaka Matsuura, Masayoshi Takeuchi, Taichi Sano, Koki Minoguchi, Takuya Yamaoka
Summary: This study investigated the abnormal grain growth (AGG) process in Al-Nb-microalloyed low carbon steel at high temperatures, revealing that the dissolution of pinning particles, enhanced grain growth due to carburization, and lower mobility of grain boundaries with specific misorientation angles are key factors influencing AGG. The findings suggest that differences in grain boundary mobility can induce duplex grain growth, resulting in AGG.
Article
Materials Science, Multidisciplinary
Akbar Heidarzadeh, Roghayeh Mohammadzadeh, Hamid Reza Jafarian, Catalin Iulian Pruncu, Aude Simar
Summary: The study reveals the contribution of GNDs and GBs to the mechanical properties of different zones in a friction stir welded pure copper joint, with higher GNDs density in the weld. Differences among zones are mainly related to the distribution of dislocations.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Nanoscience & Nanotechnology
Y. Ngiam, Z. H. Cao, M. X. Huang
Summary: This study develops a combined model that couples the phase field model and a modified hydrogen diffusion model to investigate the relationship between hydrogen diffusion and hydrogen embrittlement in martensitic press-hardened steel (PHS). Experimental and simulation results demonstrate that defects in the martensitic microstructure, such as lath boundaries (LB) and prior-austenite grain boundaries (PAGB), are the preferred locations for hydrogen storage, and these boundaries are prone to hydrogen embrittlement when the material's hydrogen concentration reaches a critical value.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
S. Pan, X. K. Shang, B. B. He, M. X. Huang
Summary: Annealing treatment is commonly used to recover the ductility of high/medium entropy alloys, but this study shows that the ductility of a CoCrNiVC medium entropy alloy can be substantially reduced after the tempering process, similar to tempering embrittlement in some steels. Numerous chromium-enriched carbides are formed at shear bands and grain boundaries during tempering, leading to localized strain concentration during plastic deformation and facilitating the nucleation of micro-cracks. The segregation of carbon at grain boundaries decreases cohesion energy, accelerating crack propagation and intergranular fracture development.
Article
Engineering, Mechanical
Y. Z. Li, S. L. Zhao, S. H. He, C. P. Huang, M. X. Huang
Summary: This study demonstrates a method to achieve high strength and large uniform elongation of ultrathin sheet steels at low costs by simply using standard industrial procedures. An optimized double reduction process, which controls dislocation density and exploits the beneficial effects of bake hardening, was designed to improve the uniform elongation of ultrathin sheets without sacrificing yield stress. Precisely controlling dislocations plays an important role in producing low-cost ultrathin sheet steels with high strength and uniform tensile ductility, which are highly demanded for large-scale industrial production.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Physics, Applied
H. Jiang, M. Wang, M. X. Huang
Summary: The compressive properties of high-entropy alloys (HEAs) in bcc structure were investigated and a classification algorithm identified alloys with high compressive failure strain using Pugh's ratio and valence electron concentration as key attributes.
APPLIED PHYSICS LETTERS
(2022)
Letter
Materials Science, Multidisciplinary
Z. H. Cao, B. N. Zhang, M. X. Huang
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
C. Hu, C. P. Huang, Y. X. Liu, A. Perlade, K. Y. Zhu, M. X. Huang
Summary: In this study, the tensile and fracture behaviors of a medium Mn steel fabricated by intercritical annealing (IA) and room-temperature quenching and partitioning (RT Q&P) processes were investigated. The IA steel consists of ultrafine-grained ferrite and austenite, while the RT Q&P steel is comprised of martensite matrix and retained austenite. The strain localization is moderate in the RT Q&P steel but highly localized in the IA steel, leading to premature decohesion and sudden fracture.
Review
Metallurgy & Metallurgical Engineering
Zuoheng Cao, Zhou Wang, Yan Ngiam, Zhichao Luo, Zhiyu Geng, Jingjing Wang, Yu Zhang, Mingxin Huang
Summary: The application of press-hardened steels (PHSs) in automotive body-in-white components using the hot-stamping technique is growing. However, the issue of hydrogen embrittlement (HE) hinders the rising trend of PHSs application by causing mechanical property degradation. This study highlights techniques to characterize the hydrogen content and distribution, techniques to evaluate HE susceptibility, and potential models to simulate the in-service performance of PHS. Future studies are expected to establish a conclusive HE evaluation standard for PHS based on the review of existing studies.
STEEL RESEARCH INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Cuncai Fan, Shijun Zhao, Shuai Pan, Binbin He, Mingxin Huang
Summary: Understanding the effects of ion channeling on helium radiation blistering is crucial for developing advanced plasma-facing materials. In this study, we used a Helium Ion Microscope to investigate the behavior of helium ions implanted into tungsten grains. The results showed that channeling and non-channeling grains exhibited different blistering behaviors, with the non-channeling grains having smaller and shallower blisters with more and larger cracks beneath the surface. Molecular Dynamic simulations were used to discuss the underlying mechanisms, providing insights for designing plasma-resistant materials through texture and anisotropy tailoring.
Article
Materials Science, Multidisciplinary
Cuncai Fan, Shuai Pan, Xunxiang Hu, Binbin He, Mingxin Huang
Summary: The present study presents a systematic investigation of helium irradiation blistering on tungsten surfaces with different orientations ({100}, {110}, and {111}). The results reveal that the blistering deformation starts with nanocrack nucleation at the peak in the bubble depth distribution, followed by gas buildup in a primary cavity. The study also shows that the blistering behaviors vary between different orientations of tungsten surfaces.
Article
Materials Science, Multidisciplinary
X. Y. Xu, C. P. Huang, H. Y. Wang, Y. Z. Li, M. X. Huang
Summary: The limited slip systems of magnesium (Mg) and its alloys hinder their wide applications. By conducting tensile straining experiments, researchers discovered a rate-dependent transition in the dislocation mechanisms of Mg alloys. At high strain rates, glissile dislocations dominate, while easy-glide dislocations dominate at low strain rates. Abundant glissile dislocations do not necessarily improve ductility.
Article
Engineering, Mechanical
Lang Liu, Liejun Li, Zhiyuan Liang, Mingxin Huang, Zhengwu Peng, Jixiang Gao, Zhichao Luo
Summary: A medium-Mn dual-phase steel was proposed to develop a strong and damage-resistant steel by refining the microstructure. The experimental results showed that the developed steel exhibited outstanding ultimate tensile strength and high elongation when the martensite volume fraction was 55%. However, as the martensite volume fraction increased, the fracture strain decreased significantly, and the necking behavior transitioned. It is suggested to choose a moderate martensite volume fraction range when developing a 1470 MPa grade dual-phase steel with excellent damage tolerance.
INTERNATIONAL JOURNAL OF PLASTICITY
(2023)
Article
Nanoscience & Nanotechnology
M. Guana, Y. Wanga, Y. X. Liua, Z. Wangc, M. X. Huang
Summary: The present study demonstrates that a new heat treatment process involving double austenitization can optimize the coating structure and prior austenite grain size (PAGS) of AlSi-coated 2GPa-grade press hardened steel (PHS), resulting in improved bendability while maintaining similar ultimate tensile strength (UTS). The interdiffusion ferrite layer in the coating structure is found to be responsible for the improved bendability, while the controlled PAGS ensures similar UTS. By employing a double austenitization process, an interdiffusion ferrite layer with an Al content lower than 4 wt.% is produced, leading to a bending angle improvement of over 60 degrees while retaining similar UTS.
SCRIPTA MATERIALIA
(2023)
Article
Nanoscience & Nanotechnology
H. Jiang, K. P. Yu, X. C. Liu, L. H. He, B. B. He, M. X. Huang
Summary: This paper introduces a new type of compositionally complex oxide (CCO) with a spinel structure embedded in a new body-centered cubic compositionally complex alloy (CCA) matrix. The crystal structure of the new CCO, characterized by neutron diffraction and high-resolution transmission electron microscopy, shows that Mn atoms occupy the tetrahedral position while V, Ti, and Al atoms share the octahedral sites. The combination of the new CCO with the new CCA matrix demonstrates a potential strategy for developing new oxide-metal composites.
SCRIPTA MATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
L. K. Huang, F. Liu, M. X. Huang
Summary: The bainite transformation in medium Mn steels has been experimentally and theoretically studied, and it has been found that the transformation kinetics is slow. However, the introduction of dislocations can significantly accelerate the transformation rate. A new "carbon depletion mechanism" is proposed to explain the role of dislocations in the acceleration of bainite transformation, and a physical model is developed to quantitatively understand the kinetics of bainite transformation.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Review
Materials Science, Multidisciplinary
Chengpeng Huang, Chen Hu, Yuxuan Liu, Zhiyuan Liang, Mingxin Huang
Summary: This article provides a systematic review of the state-of-the-art developments of medium Mn steel, focusing on alloy design, thermomechanical processing, fracture mechanisms, and hydrogen embrittlement.
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)
