Article
Chemistry, Physical
Fei Liu, Zhiyi Liu, Guangyu He
Summary: The microstructure evolution and its effect on the strength properties and fatigue performance of the Al-Cu-Mg alloy have been investigated. The results show that refining Goss-oriented grains can improve the strength-ductility trade-off and reduce the fatigue crack propagation rate.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
J. G. Jeon, J. H. Shin, S. E. Shin, D. H. Bae
Summary: By refining the recrystallized grain sizes, the yield strength and elongation of Al-Si-Mg-Cu-based alloy sheets can be improved while reducing anisotropy. Grain refinement leads to random grain orientations, increasing the plastic strain ratio and optimizing formability.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Daoxiu Li, Kai Zhao, Mengxia Han, Guiliang Liu, Qianqian Sun, Sida Liu, Xiangfa Liu
Summary: This study systematically investigates the effects of C-doped (C-TiB2) particles on the microstructure and properties of Al-Si-Mg-Mn alloys. The results show that C-TiB2 particles can refine the grain size, inhibit grain size instability, refine the size of precipitates, improve the dislocation density, and change the grain orientation, leading to significant enhancements in yield strength and elongation.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Honglei Xi, Wenlong Xiao, Heng Li, Yu Fu, Ge Yi, Juhong Qie, Xiaozhao Ma, Chaoli Ma
Summary: The microstructure evolution and mechanical properties of Al-7Si-0.35Mg alloy with different amounts of submicron-sized TiC particle addition were investigated. The results showed that the addition of TiC improved the mechanical properties, with the best combination obtained at 0.3wt% TiC addition.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Dong Pan, Yitong Wang, Qingtao Guo, Dong Zhang, Xiaofeng Xu, Yuguang Zhao
Summary: The grain refinement of AA6061 alloy was successfully achieved through cyclic electropulsing treatment without any plastic deformation or matrix transformation. The dislocation density, texture intensity, and distribution of crystal planes in the sample were enhanced by cyclic electropulse treatment, leading to improved strength and ductility of the alloy. The yield strength and elongation of the optimized cyclic electropulse-treated sample were enhanced by 72.1% and 2.1% compared to conventional-treated samples, indicating the potential of electropulsing treatment for grain refinement of NP&D materials.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Ming -Le You, Shuo-Min Li, Zhang-Zhi Shi
Summary: This paper develops a new type of aluminum alloy and improves its hardness through laser-aging surface treatment. The alloy exhibits high hardness and improved corrosion resistance. The study also establishes equations to evaluate the contributions of different hardening effects.
MATERIALS TODAY COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Thomas Klein, Aurel Arnoldt, Robert Lahnsteiner, Martin Schnall
Summary: The study explores the processing performance of an advanced Al-Mg-Si alloy with a TiB2-containing structural refiner in WAAM technology, resulting in fine equiaxed grains without crystallographic texture, and showing good yield strength after heat treatment.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Kai Zhao, Tong Gao, Huabing Yang, Kaiqi Hu, Guiliang Liu, Qianqian Sun, Jinfeng Nie, Xiangfa Liu
Summary: The addition of TiC nano-particles in high-strength aluminum alloy 7050 leads to significant grain refinement and improved mechanical properties through growth restriction effect and heterogeneous nucleation. The alignment of TiC nano-particles along extrusion direction after subsequent heat treatment contributes to the enhanced tensile properties, ductility, and refined precipitates in the composite. These synergistic effects result in optimized mechanical properties of TiCp/7050 composite, providing new insights for controlling matrix grains of Zr-containing Al alloys and developing low-cost Al matrix composites.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Jianyue Zhang, Guanyu Zhou, Bin Jiang, Alan Luo, Xuzhe Zhao, Aitao Tang, Fusheng Pan
Summary: The novel grain refinement method using a CaMgSn intermetallic phase was found to effectively reduce the average grain size in AZ31 magnesium alloy, improving microhardness and compressive yield strength. The added CaMgSn particles acted as heterogeneous nucleation sites in the grain interiors, contributing to the refinement of microstructure and mechanical properties of Mg-Al-based alloys.
Article
Chemistry, Physical
Ling Lin, Lian Zhou, Yu Xie, Weimin Bai, Faguo Li, Ying Xie, Mingxin Lu, Jue Wang
Summary: In this study, a pre-refinement method was proposed to avoid silicon poisoning and recover the refinement effect of Al-5Ti-1B in Hypoeutectic Al-Si-Mg alloys. The results showed that the pre-refinement alloy had significantly smaller grain diameter and superior mechanical properties after solid-solution and aging heat treatments compared to post-refinement and non-refinement alloys. The proposed method demonstrated effective avoidance of silicon poisoning and optimization of mechanical properties in the alloy.
Article
Engineering, Industrial
Xuelei Ren, Xiaoqing Jiang, Tao Yuan, Xiaohu Zhao, Shujun Chen
Summary: In this study, high-strength and ductile Al-Zn-Mg-Cu alloys were successfully prepared using wire arc additive manufacturing technology. The effect of composite processing on the microstructure and mechanical properties of the alloy deposition was investigated. The results showed that the composite processing transformed the grain morphology and promoted the precipitation of nano-precipitated phases, resulting in increased tensile strength, elongation, and hardness. The research also revealed that fine grain strengthening and precipitation strengthening were the main mechanisms for enhancing elongation and strength, respectively. This study provides theoretical guidance for improving the strength and elongation of Wire Arc Additive Manufacturing Al-Zn-Mg-Cu alloys, thus promoting engineering applications.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Dong Jin, Hongying Li, Changlong Yang, Yu Han, Zhixiang Zhu, Yaojun Miao, Chao Xu, Baoan Chen
Summary: The effects of Mg and Si contents on the microstructure and solidification behavior of dilute Al-Mg-Si alloys were investigated. The results show that the grain size and secondary dendrite arm spacing decrease with the increase in Mg and Si content. The increase in Mg content suppresses the transformation from alpha-AlFeSi to beta-AlFeSi, while the increase in Si content promotes this transformation. Additionally, the Mg/Si ratio influences the formation of the eutectic structure and the type of Fe-bearing phase in it.
Article
Chemistry, Multidisciplinary
Hong-Chen Yu, Yu-Zhuo Men, Shu-Guo Yang, Hui Liu, Lei Yu, Xue-Dong Xu, Yi-Fei Li, Chang-Sheng Zou, Hao-Nan Wang, Wei-Rong Zhong
Summary: The study investigated the combined influence of Mg/Si and Ca contents on the crystallization of primary Mg2Si in Al-Mg2Si alloy. By restricting the embryo formation and growth of primary Mg2Si, the researchers successfully prepared dice-like primary Mg2Si in an over-modified alloy, revealing a novel method to control the morphology and particle size of primary Mg2Si and further understand the crystallization process.
Article
Materials Science, Multidisciplinary
Pengcheng Ma, Takahiro Masuda, Shoichi Hirosawa, Zenji Horita
Summary: By subjecting three different compositions of Al-Cu-Mg alloys to high-pressure torsion (HPT) and subsequent aging treatment, the hardness of the alloys increased significantly and the average grain sizes were refined to nanoscale. After aging treatment, the hardness further increased due to the strengthening mechanisms of grain refinement and nanoscale precipitates. The contribution of different strengthening mechanisms was quantitatively evaluated.
MATERIALS TRANSACTIONS
(2023)
Review
Materials Science, Multidisciplinary
M. R. Sai Ganesh, Nikhil Reghunath, M. J. Levin, Adarsh Prasad, Sanapala Doondi, Karthik V. Shankar
Summary: This article reviews the development of cast aluminium alloy with highlights on improvement in the morphological, mechanical, tribological, and ageing properties of Sr modified Al-Si and Al-Si-Mg alloys. It discusses the applications of aluminium and its alloys in the automobile and aviation industries, emphasizing on their lightweight and low density benefits. The article also explores the microstructure, hardness, tensile properties, tribological properties, and corrosion behavior by the addition of strontium in these aluminium alloys for future structural application in automobile and lightweight industries.
METALS AND MATERIALS INTERNATIONAL
(2022)
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)