Article
Nanoscience & Nanotechnology
H. Miura, P. L. Khoo, M. Kobayashi
Summary: This study utilized extremely high-pressure forging conditions to refine the grain and improve the mechanical properties of magnesium AZ80 alloy by forming mechanical twins and texture strengthening. The hardness, yield strength, and ultimate tensile strength of the material were notably enhanced with increasing forging stress.
SCRIPTA MATERIALIA
(2023)
Article
Metallurgy & Metallurgical Engineering
Jong Un Lee, Gyo Myeong Lee, Sung Hyuk Park
Summary: Precompression and subsequent annealing treatment can improve the bending formability of the Mg-9Al-1Zn-0.3Mn-0.9Ca-0.6Y alloy. The PCAed material exhibits higher bending formability due to the promoted twinning and slip behaviors.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
Jingfeng Zou, Lifeng Ma, Weitao Jia, Qichi Le, Gaowu Qin, Yuan Yuan
Summary: Radial forging is an economical manufacturing process where four dies act simultaneously on a workpiece with high-frequency radial movement. This study investigated the deformation behavior, microstructure evolution, and mechanical responses of a ZK60 magnesium alloy step-shaft bar processed under different accumulated strains by radial forging at 350 degrees C. The material underwent grain refinement, resulting in a bimodal grained structure and the formation of nano-sized Zn2Zr spheroidal particles. The mechanical properties improved significantly after three radial forging passes.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
T. Nakata, C. Xu, S. Kamado
Summary: After cold-rolling an Mg-6Zn-0.3Ca alloy sheet with a strong basal texture, anomalous double twinning occurred with the (0001) pole aligned to the transverse direction. These twins served as nucleation sites for statically recrystallized grains during annealing, resulting in weak texture features in the annealed sheet with transverse-direction split (0001) poles.
MATERIALS CHARACTERIZATION
(2021)
Article
Nanoscience & Nanotechnology
T. Nakata, C. Xu, L. Geng, S. Kamado
Summary: We report the formation of an unusual texture on the sheet-surface of a rolled Mg-3Al-0.4Mn alloy, where a typical basal texture is formed at the center of the sheet and an unusual texture with vertical tiling is observed at the sheet-surface. The surface promotes prismatic slips and dynamic recrystallization, leading to a high fraction of fine basal-textured grains and a small fraction of off-basal-textured grains. In contrast, the center preserves a relatively high fraction of deformed grains, promoting the growth of basal-textured grains and the formation of the typical basal texture.
SCRIPTA MATERIALIA
(2023)
Article
Chemistry, Physical
T. Nakata, C. Xu, L. Geng, S. Kamado
Summary: This paper reports the application of cold-sample rolling (CSR) processing in a Mg-6Al-1Zn alloy sheet, which resulted in a high fraction of double twins and a substantial texture-weakening effect. Compared to high-temperature rolling (HTR) processing, CSR processing induced a relatively higher texture-weakening effect. The results indicate that twinning-mediated static recrystallization is essential for texture weakening in Al-concentrated Mg-alloy sheets.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Lingyu Zhao, Bo Guan, Yunchang Xin, Xiaoxu Huang, Chenglu Liu, Peidong Wu, Qing Liu
Summary: This study systematically investigated the mechanical behavior of Mg AZ31 rods under tension along the extrusion direction and the relationship with bimodal texture components. The results showed that the yield strength does not decrease linearly with an increase in the percentage of soft orientations. Bimodal texture components stimulate the activation of twin variants with a low Schmid factor, indicating that the interaction among twin variants plays a major role in twinning behavior.
Article
Metallurgy & Metallurgical Engineering
T. Nakata, C. Xu, L. Geng, S. Kamado
Summary: This study investigates the origin of the unique parallel alignment of (0001) poles to the transverse direction in rolled alloy sheets. It is found that intermediate reheating during rolling facilitates static recrystallization and leads to the formation of the parallel alignment of (0001) poles to the transverse direction. In contrast, continuous rolling without intermediate reheating suppresses the formation of the unique alignment. The presence of severely deformed regions near double twins hinders the nucleation and growth of statically recrystallized grains, resulting in in-plane anisotropy in ductility.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Nanoscience & Nanotechnology
Umer Masood Chaudry, Yeonju Noh, Gukin Han, Russlan Jaafreh, Tea-Sung Jun, Kotiba Hamad
Summary: This study investigates the effects of CaO additions on the microstructure, texture, and mechanical properties of AZ61 magnesium alloy. The addition of CaO leads to the formation of Ca-rich intermetallic compounds and influences the evolution of the alloy's structure. Additionally, the alloys containing CaO exhibit twined structures, with an increased fraction of tension twins as the amount of CaO increases.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Jing Xu, Yanshuo Peng, Bo Guan, Yunchang Xin, Adrien Chapuis, Guangjie Huang, Qing Liu
Summary: Dual-phase Mg-Li alloys with different rolling paths were studied to investigate the effect of rolling path on microstructure, texture and mechanical anisotropy. The lamellar alpha+beta structures remained after ED-rolling and subsequent annealing, while disappeared after TD-rolling. The texture of beta phase was hardly affected by the rolling path. Annealing only reduced the maximum intensity of texture without changing the type of texture. VPSC simulations revealed that the activated deformation modes and alpha/beta phase boundaries played important roles in texture evolution. There was an obvious mechanical anisotropy after ED-rolling, which disappeared after TD-rolling.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Chunyu Wang, Yuxiu Zhang, Qinghuan Huo, Zhirou Zhang, Jiao Tang, Aki Hashimoto, Xuyue Yang
Summary: This study investigated the effects of twinning time node on the creep resistance of an extruded Mg-2wt%Y sheet. Pre-compression with a low strain before creep resulted in a large amount of {10 (1) over bar2} twins, impacting the creep resistance of the samples. The dominant creep mechanisms differed between samples with and without pre-compression, with the presence of twins affecting the creep rate.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Metallurgy & Metallurgical Engineering
Ding Ning, Wang Yunfeng, Liu Ke, Zhu Xunming, Li Shubo, Du Wenbo
Summary: Magnesium alloys have excellent characteristics such as low density, high specific strength, high thermal conductivity, and superior damping ability. The study developed Mg-Gd-Er-Zr alloys based on Mg-Gd binary alloy, and found that the microstructure and texture evolution in various accumulated strains have significant effects on the mechanical properties of the alloy. Continuous dynamic recrystallization was identified as the dominant mechanism in the forging process.
ACTA METALLURGICA SINICA
(2021)
Article
Materials Science, Multidisciplinary
Adam Ismaeel, Dongsheng Xu, Xuexiong Li, Jinhu Zhang, Rui Yang
Summary: Crystal plasticity (CP) simulations were used to investigate the influence of texture on the mechanical and micromechanical properties of Ti-6Al-4V. The results showed that the alloy's strength and plasticity are significantly affected by texture, and the alloy exhibits different mechanical behaviors under different loading directions and textures.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Jiri Kubasek, Jan Pinc, Klara Hosova, Marketa Strakova, Orsolya Molnarova, Jan Duchon, David Necas, Miroslav Cavojskyc, Michal Knapek, Matjaz Godec, Irena Paulin, Dalibor Vojtech, Jaroslav Capek
Summary: This paper investigates the effects of extrusion temperature and ratio on the microstructure and mechanical properties of Zn-0.8Mg-0.2Sr alloy. The results show that the grain size, material texture, and dislocation substructures have a significant influence on the alloy's elongation range and anisotropy. Under appropriate extrusion conditions, the alloy's mechanical properties can be greatly improved.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Mechanical
Xiaodan Zhang, Shangming Li, Xiaoqian Guo, Huamiao Wang, Qin Yu, Peidong Wu
Summary: In this study, an elastic visco-plastic self-consistent model with twinning and detwinning scheme, along with a torsion specific finite element approach, is used to simulate the deformation behavior of magnesium alloy solid rod with different initial textures. It was found that the deformation mechanisms, stress-strain response, Swift effect, and deformation texture vary significantly with different initial textures and loading paths, highlighting the importance of understanding the influence of these factors on mechanical properties.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Chemistry, Physical
M. G. Jiang, H. Yan, R. S. Chen
JOURNAL OF ALLOYS AND COMPOUNDS
(2015)
Article
Nanoscience & Nanotechnology
M. G. Jiang, H. Yan, R. S. Chen
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2015)
Article
Chemistry, Physical
M. G. Jiang, C. Xu, T. Nakata, H. Yan, R. S. Chen, S. Kamado
JOURNAL OF ALLOYS AND COMPOUNDS
(2016)
Article
Nanoscience & Nanotechnology
M. G. Jiang, C. Xu, T. Nakata, H. Yan, R. S. Chen, S. Kamado
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2016)
Article
Nanoscience & Nanotechnology
M. G. Jiang, C. Xu, T. Nakata, H. Yan, R. S. Chen, S. Kamado
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2016)
Article
Chemistry, Physical
M. G. Jiang, C. Xu, T. Nakata, H. Yan, R. S. Chen, S. Kamado
JOURNAL OF ALLOYS AND COMPOUNDS
(2017)
Article
Materials Science, Multidisciplinary
M. G. Jiang, C. Xu, H. Yan, G. H. Fan, T. Nakata, C. S. Lao, R. S. Chen, S. Kamado, E. H. Han, B. H. Lu
Article
Metallurgy & Metallurgical Engineering
S. S. A. Shah, M. G. Jiang, D. Wu, U. Wasi, R. S. Chen
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2018)
Article
Multidisciplinary Sciences
M. G. Jiang, C. Xu, H. Yan, S. H. Lu, T. Nakata, C. S. Lao, R. S. Chen, S. Kamado, E. H. Han
SCIENTIFIC REPORTS
(2018)
Article
Materials Science, Ceramics
Zhangwei Chen, Chengbo Liu, Junjie Li, Junyi Zhu, Yu Liu, Changshi Lao, Jun Feng, Mingguang Jiang, Changyong Liu, Pei Wang, Yang Li
CERAMICS INTERNATIONAL
(2019)
Article
Materials Science, Multidisciplinary
M. G. Jiang, Z. W. Chen, J. D. Tong, C. Y. Liu, G. Xu, H. B. Liao, P. Wang, X. Y. Wang, M. Xu, C. S. Lao
MATERIALS RESEARCH LETTERS
(2019)
Article
Nanoscience & Nanotechnology
C. Y. Liu, J. D. Tong, M. G. Jiang, Z. W. Chen, G. Xu, H. B. Liao, P. Wang, X. Y. Wang, M. Xu, C. S. Lao
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2019)
Proceedings Paper
Materials Science, Multidisciplinary
M. G. Jiang, J. C. Chen, H. Yan, C. Xu, T. Nakata, S. Kamado
MAGNESIUM TECHNOLOGY 2017
(2017)
Proceedings Paper
Materials Science, Multidisciplinary
R. S. Chen, M. G. Jiang, J. Luo, H. Yan, C. Xu, S. Kamado
MAGNESIUM TECHNOLOGY 2017
(2017)
Article
Metallurgy & Metallurgical Engineering
M. G. Jiang, H. Yan, L. Gao, R. S. Chen
JOURNAL OF MAGNESIUM AND ALLOYS
(2015)