Article
Materials Science, Multidisciplinary
Jianqing Chen, Yehan Su, Qiyu Zhang, Jiapeng Sun, Donghui Yang, Jinghua Jiang, Dan Song, Aibin Ma
Summary: A homogeneously ultrafine-grained (UFG) Cu-38 Zn alloy with an average grain size of 0.64 μm was successfully fabricated by equal channel angular processing (ECAP), exhibiting a significantly enhanced strength-ductility synergy. The observed strength enhancement can be attributed to grain refinement and dislocation strengthening. After annealing, the alloy showed further improved strength with almost unchanged ductility, which is associated with solute/impurity segregation and precipitation phenomena inside the grains.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
S. Atefi, M. H. Parsa, D. Ahmadkhaniha, C. Zanella, H. R. Jafarian
Summary: In this study, severe plastic deformation of commercially pure copper rod was achieved using the ECAP-Conform method, and the microstructural and mechanical properties of the samples were characterized. The results showed that the ECAP-Conform method can effectively refine the grain size and improve the mechanical behavior of the copper rod.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Nanoscience & Nanotechnology
Hamidreza Koohdar, Pouya Hakimipour, Hamid Reza Jafarian, Terence G. Langdon, Mahmoud Nili-Ahmadabadi
Summary: Experiments revealed that prior cold rolling influences the microstructure and mechanical properties of the Fe-10Ni-7Mn martensitic steel, leading to the formation of reversed austenite and transformation of martensite during post-deformation intercritical annealing. Additionally, precipitation of NiMn particles after subsequent ageing increases the ultimate tensile strength.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Hao Gu, Zhide Li, Shilei Liu, Haitao Gao, Charlie Kong, Hailiang Yu
Summary: Commercially pure titanium sheets with high strength and elongation were produced through asymmetric cryorolling and subsequent annealing. The samples treated with asymmetric cryorolling plus annealing showed significant grain refinement and dislocation accumulation, resulting in uniform distribution of dislocations and texture, finer grain sizes, and a higher proportion of high angle grain boundaries. This provided favorable conditions for uniform plastic deformation and yielded similar elongations to failure as the samples treated with room-temperature rolling plus annealing.
Article
Chemistry, Physical
Shulin Dong, Yingdong Qu, Ruirun Chen, Guanglong Li, Wei Zhang, Qi Wang, Hongze Fang, Jingjie Guo, Bo Yu
Summary: By designing and preparing Ti-44Al-4Nb-0.5Fe-0.1B and Ti-44Al-2Nb-2Fe-0.1B alloys, the study focuses on whether and why the hot deformation processing capability of the new alloys is improved. The results show that the Ti-44Al-2Nb-2Fe-0.1B alloy has lower true stress, moderate diffusion activation energy, lower stress exponent, larger hot processing window, lower dislocation density, and more adequate dynamic recrystallization, demonstrating its good hot deformation processing capability and service properties.
Article
Mechanics
Zelin Liu, Chunde Ma, Xin'ao Wei, Weibin Xie
Summary: The presence of cracks had a weak effect on the strength of sandstone specimens during direct tensile testing (DTT) and uniaxial compression testing (UCT). However, the strengths of the specimens increased gradually with different crack inclinations (fi). The elastic modulus of rock increased with an increase in fi during UCT, while it remained almost unchanged during DTT.
ENGINEERING FRACTURE MECHANICS
(2021)
Article
Materials Science, Multidisciplinary
Qibin Wang, Qi Wang, Ruirun Chen, Xiaowei Wang, Yanqing Su, Hengzhi Fu
Summary: By synergistically adding Zr and Fe, the properties of Nb-24Ti-16Si-2Al alloy are optimized, suppressing the formation of (Nb, X)3Si phase and altering the constituent phases. The addition of Zr enhances the proportion of gamma-(Nb, X)5Si-3 and refines the eutectic colonies. Fe mainly controls the formation and proportion of Nb4FeSi phase. The formation of hexagonal gamma-(Nb, X)5Si-3 blocks improves room temperature toughness and compressive strength.
MATERIALS CHARACTERIZATION
(2023)
Article
Materials Science, Multidisciplinary
Dong Sun, Shuyong Jiang, Xiaodong Xing, Bingyao Yan, Junbo Yu, Yanqiu Zhang
Summary: Local canning compression is applied to equiatomic NiTi shape memory alloy with complete B19' martensite, leading to different grain sizes after annealing at 300, 450 and 600 degrees C. The highest elastic limit is achieved under annealing at 300 degrees C, while the highest yield stress and good plasticity are observed under annealing at 450 degrees C. Annealing at 600 degrees C results in a relatively low yield stress but still higher than the as-received NiTi SMA, with high plasticity as well.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Yong Zhang, Yufeng Huang, Wensheng Liu, Yunzhu Ma, Jiayi Liu, Chaoping Liang
Summary: By using tungsten-tantalum particles as the sintered core and forming a solid solution, the precipitation of an acicular phase during the sintering process reduces the liquid phase sintering temperature of tungsten alloys and improves their mechanical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Automation & Control Systems
Serkan Ogut, Hasan Kaya, Aykut Kentli, Mehmet Ucar
Summary: In this study, ECAP, Exp.-ECAP, and HECAP processes were applied to pure copper specimens. An optimized die was used to minimize pressing load and strain inhomogeneity in the specimen. Microstructure analysis and mechanical tests showed that the Exp.-ECAP process yielded better results in grain refinement and mechanical properties.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
J. W. Lv, C. Wei, S. Zhang, Z. L. Shi, H. R. Zhang, Y. J. Yang, X. Y. Zhang, M. Z. Ma
Summary: The effects of deformation and isothermal annealing in the supercooled liquid region on the microstructure and room-temperature mechanical properties of Ti33Zr30Cu9Ni5.5Be22.5 bulk metallic glass were investigated. The thermally-deformed specimens showed denser structures and higher characteristic temperatures compared to the annealed specimens, with higher yield and fracture strengths but similar plasticity. Both deformed and annealed specimens precipitated nanocrystals at around 648 K, leading to a rapid decrease in plasticity.
Article
Chemistry, Physical
Hengchao Shi, Longchen Duan, Songcheng Tan, Xiaohong Fang
Summary: The mechanical properties and microstructure characteristics of Fe-Cu based metal matrix composites are influenced by Fe/Cu ratio and molten state contents. Mechanical properties initially increase with decreasing Fe/Cu ratio, but sharply drop when Cu becomes the main component, with the best performance at a Fe/Cu ratio of 7:3. The effects of Fe/Cu ratio are also reflected in the strength of bonding interfaces, with Fe-Fe, Fe-Cu, and Cu-Cu interfaces in descending order of strength.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Metallurgy & Metallurgical Engineering
S. O. Rogachev, E. A. Naumova, R. D. Karelin, V. A. Andreev, M. M. Perkas, V. S. Yusupov, V. M. Khatkevich
Summary: The study shows that equal-channel angular pressing significantly improves the strength and plasticity of the Al-5% Mg-1% Ca-0.9% Mn-0.5% Fe-0.1% Zr alloy.
PHYSICS OF METALS AND METALLOGRAPHY
(2021)
Article
Multidisciplinary Sciences
Sunil Kadiyan, Brijnandan S. Dehiya, R. K. Garg, Pawan Kamiya, Meenu Saini
Summary: In this study, Al-6063 alloy cylindrical samples were processed using the ECAP technique, with three critical parameters varied to achieve grain refinement and improved material properties. The thermomechanical effect led to a reduction in grain size from micro to nano, showing promising results for research and the automotive industry.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2021)
Article
Nanoscience & Nanotechnology
Yuyu Li, Bowen Yang, Tingzhuang Han, Zhibing Chu, Leifeng Tuo, Chun Xue, Qianhua Yang, Xiaodong Zhao, Hong Gao
Summary: This study conducted experiments and model analysis on the effects of pre-deformation on the microstructure and plastic deformation mechanism of AZ31 magnesium alloy. The results showed that a higher pre-deformation strength led to a greater yield strength in the corresponding secondary compression process. Additionally, the activation of {1011} compression twin significantly influenced the secondary compression plasticity of the magnesium alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Physics, Applied
M. Li, Q. W. Jiang
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2017)
Article
Nanoscience & Nanotechnology
Qing-Wei Jiang, Xiao-Wu Li
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2012)
Article
Materials Science, Multidisciplinary
Q. -W. Jiang, Y. Wang, Y. Wu, X. -W. Li
MATERIALS TECHNOLOGY
(2012)
Article
Materials Science, Multidisciplinary
Feng-Wu Long, Qing-Wei Jiang, Lin Xiao, Xiao-Wu Li
MATERIALS TRANSACTIONS
(2011)
Article
Materials Science, Multidisciplinary
X. H. Li, Q. W. Jiang, M. Li, P. Yang, J. S. Xiong, Z. C. Zhao, S. Zhang
Summary: Commercially pure iron (CP Fe) was processed by equal channel angular pressing (ECAP) to investigate the impact of annealing temperature on deformation behavior. Results indicated that suitable annealing temperature can enhance grain boundary coordinated deformation and decrease material damage level.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Zhong-Chao Zhao, Jing Ning, Jie Su, Qing-Wei Jiang, Geng Liu, Ding-Hui Liu, Qi Gao, Ao Wang
Summary: Ultra high-strength M54 steel blocks were fabricated using laser metal deposition, and the microstructure and mechanical behavior of the material were systematically investigated. The results showed that the material exhibited anisotropic microstructure and mechanical properties, with different cellular structures on different cross-sections.
MATERIALS RESEARCH EXPRESS
(2022)
Review
Materials Science, Multidisciplinary
Siyue Fan, Xuming Guo, Zhenhua Li, Jing Ma, Fei Li, Qingwei Jiang
Summary: Wire arc additive manufacturing (WAAM) techniques have advantages in economically producing large-sized high-strength Al-Cu alloy components. This article reviews the research progress on the manufacturing process, solidification microstructure, common defects, mechanical properties, and post-processing processes of WAAM high-strength Al-Cu alloys. Positive findings have been reported regarding the microstructure and mechanical properties. The article also outlines the development prospects of WAAM high-strength Al-Cu alloys based on previous research.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Materials Science, Multidisciplinary
Zhenhua Li, Wangming Zhang, Siyue Fan, Qingwei Jiang
Summary: The microstructure of commercial Al-5Zr master alloys was examined, and the effect of remelting temperature and cooling rate on the solidification structure of the remelted alloys was investigated. The results showed that controlling the remelting temperature and cooling rate could effectively regulate the microstructure of the remelted Al-5Zr master alloy.
Article
Physics, Applied
Qingwei Jiang, Xiaohong Li, Peng Yang, Sheng Zhang, Min Li
Summary: The study investigated the microstructure, shear strength and Vickers hardness of TA1/Q235B clad plates under different first pass rolling reduction ratios (FP3R). It was found that the shear strength of the clad plate increased with the reduction ratio, reaching a maximum of 189 MPa, while the maximum Vickers hardness was around 198.7 HV. The thickness of Ti and Fe diffusion layer also increased. However, the formation of TiC and Fe-Ti intermetallic compounds at the bonding interface due to diffusion of Fe, Ti and C led to reduced bonding quality.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2021)
