Article
Materials Science, Multidisciplinary
Kui Wang, Xinwei Wang, Cong Dang, Shaozhu Wang, Song Huang, Manping Liu, Jingfeng Wang
Summary: Ultrahigh-strength Mg-9.2Gd-4.4Y-1.0Zn-0.8Mn (wt%) alloys were produced through isothermal ageing, resulting in a microstructure characterized by bimodal a-Mg grains and prismatic b' and basal g' phases precipitated during ageing. The peak-aged alloys exhibited the highest tensile strength, with satisfactory ductility, due to dense number distribution co-precipitation that increased critical resolved shear stresses and inhibited microcrack nucleation and propagation. These findings have significant implications for high-strength Mg-Gd-Y-Zn alloys in practical applications.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Nanoscience & Nanotechnology
Lianhui Li, Jiaxin Bao, Mingliang Qiao, Jie Tian, Yiqiang Yang, Jianchun Sha, Zhiqiang Zhang
Summary: Three high-performance as-extruded Mg-Gd-Zn-Zr alloys were prepared and their microstructure, mechanical properties, and corrosion resistance were studied. The results showed that the alloys had refined and broken grains and second phase after hot extrusion. The as-extruded GZ22 alloy exhibited the highest ultimate tensile strength and the lowest corrosion rate due to fine grains and a small amount of dispersed second phase.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Jianhua Chen, Weiying Huang, Bing Liu, Hiromi Nagaumi, Xuyue Yang
Summary: In this study, the creep behaviors of dilute Mg-Mn-Zn alloys with bimodal and homogeneous grain microstructures were investigated. The samples exhibited different types of dislocation slip and creep mechanisms depending on the direction of loading. The bimodal grain microstructure accelerated creep and resulted in inferior creep resistance compared to the homogeneous microstructure.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Metallurgy & Metallurgical Engineering
Jun Zhao, Bin Jiang, Yan Song, Zuo-cai Dai, Li-wei Lu, Chao He, Guang-sheng Huang, Ding-fei Zhang, Fu-sheng Pan
Summary: The influence of Mn content on the microstructure, tensile properties, and strain-hardening behaviors of extruded Mg-1Gd-0.5Zn-xMn alloy sheets was investigated. The results showed that increasing Mn content led to a reduction in the grain size and the intensity of the texture effect. The addition of Mn also improved the tensile properties of the sheets, with Mg-1Gd-0.5Zn-1Mn sheet exhibiting the best strain-hardening capacity.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2022)
Article
Nanoscience & Nanotechnology
Xiaojie Zhou, Wenying Xiong, Gang Zeng, Hongchao Xiao, Jian Zhang, Xianzheng Lu, Xiaomin Chen
Summary: The combined effects of LPSO orientation and alpha-Mg texture on tensile anisotropy were investigated, with the extrusion direction showing optimal mechanical properties, the 45 degrees direction exhibiting high elongation, and the transverse direction having inferior strength and elongation simultaneously. LPSO orientation contributes to strength anisotropy through different load-bearing strengthening effects along different tensile axes, while alpha-Mg texture contributes to strength anisotropy through stronger grain boundary strengthening effects. However, LPSO orientation, rather than alpha-Mg texture, accounts for ductility anisotropy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Metallurgy & Metallurgical Engineering
Bao-sheng Liu, Miao-miao Cao, Yue-zhong Zhang, Yong Hu, Chang-wei Gong, Li-feng Hou, Ying-hui Wei
Summary: The addition of minor amounts of Ca in Mg-6Zn-0.3Mn alloy can refine the grains slightly and improve strength, with the alloy containing 0.5 wt.% Ca showing the best mechanical properties. However, increasing Ca content deteriorates the corrosion resistance of the alloys, while positively impacting cell viability and antibacterial activity.
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
(2021)
Article
Materials Science, Multidisciplinary
Yihao Bao, Liang Chen, Jianwei Tang, Zhigang Li, Guoqun Zhao, Cunsheng Zhang
Summary: In this study, a Mg alloy with alloying elements of Zn, Al, Sn, and Mn was designed, and hot extrusion was carried out at various speeds and temperatures. It was found that high speed extrusion resulted in more second phase particles, while high extrusion temperature increased the number of second phases, grain size, and dynamic recrystallization degree. The sample extruded at a speed of 10 mm/min and temperature of 300 degrees C showed the highest yield strength, tensile strength, and corrosion resistance.
MATERIALS CHARACTERIZATION
(2021)
Article
Chemistry, Physical
Yang Zhao, Han Li, Chaojie Jing, Fangchao Zhao, Dingfei Zhang, Fusheng Pan
Summary: The effects of various Gd additions on the microstructure evolution, tensile properties, and corrosion resistance of Mg-6Zn-0.5Ca-1Mn (ZMX6105) alloys were examined. The addition of Gd promoted the formation of Ca2Mg6Zn3 phase during solidification and inhibited dynamic recrystallization, resulting in the refinement of dynamic recrystallized grains and strengthening of basal texture. Additionally, the ZMX6105-0.2Gd alloy exhibited excellent tensile properties and optimal corrosion resistance in a 3.5 wt% NaCl solution.
Article
Materials Science, Multidisciplinary
Yuzhao Xu, Jingyuan Li, Mingfan Qi, Wenhui Guo, Yue Deng
Summary: This study investigated the influence of extrusion temperature on the microstructure, mechanical properties, and corrosion behavior of ZGMS alloy. The results showed that lower extrusion temperature led to refined grain size and improved mechanical properties. The alloy exhibited excellent mechanical properties and low corrosion rate after extrusion at 360 degrees Celsius.
MATERIALS CHARACTERIZATION
(2022)
Article
Nanoscience & Nanotechnology
Zhao Yang, Chao Xu, Taiki Nakata, Shigeharu Kamado
Summary: This study investigated the effect of extrusion parameters on the microstructural evolution and tensile properties of a Mg-8.0Gd-4.0Y-1.0Mn-0.4Sc alloy. Different DRX mechanisms, such as DDRX and CDRX, were identified, and the alloy with larger extrusion ratio exhibited smaller DRXed grains and a high number of fine precipitated particles. The alloy extruded at 400°C and ratio of 20:1 showed superior strength, while alloy extruded at 450°C and ratio of 10:1 exhibited higher elongation to failure. The enhanced strength was attributed to strong basal texture, refined DRXed grains, and dense distribution of fine particles.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Physical
Yunpeng Hu, Delong Dong, Xiangyu Wang, Hongtang Chen, Yang Qiao
Summary: The study found that increasing manganese content in Mg-Mn-Zn alloys improved their mechanical properties and corrosion resistance. Among the tested alloys, Mg-1.0Mn-2.0Zn showed the best performance and is more suitable for use in human body fluids.
Article
Metallurgy & Metallurgical Engineering
Hanieh Yeganeh, Ahmad Bahmani, Mehrab Lotfpour, Mehdi Malekan, Masoud Emamy, Behzad Nayebi, Kwang Seon Shin
Summary: The effects of Ca addition on the microstructure and oxidation properties of a new Mg alloy were investigated. The oxidation behavior of the alloys was analyzed using thermal analysis, material characterization, and microscopy techniques. It was found that increasing Ca addition improved the microstructure, mechanical properties, and oxidation resistance of the alloy. The addition of Ca resulted in the formation of a dense CaO/MgO layer on the surface, which effectively prevented further oxidation.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Materials Science, Multidisciplinary
Xuebing Hua, Kun Wang, Xian Tong, Jixing Lin
Summary: Zn-1Mg-xZr alloys with different Zr contents were prepared and hot-rolled, and their microstructures, mechanical properties, and corrosion behaviors were systematically assessed. The results showed that the addition of Zr initially increased and subsequently decreased the mechanical strength of the alloys. The Zn-1Mg-0.05Zr alloy exhibited higher mechanical properties and an appropriate corrosion rate for biomedical applications.
Article
Metallurgy & Metallurgical Engineering
Guoqiang Xi, Xuhan Zhao, Yanlong Ma, Yu Mou, Ju Xiong, Kai Ma, Jingfeng Wang
Summary: Rare earth elements have a significant impact on the microstructure and properties of advanced magnesium alloys. This study investigates the corrosion behavior of Mg-Zn-Y and Mg-Zn-Gd alloys with the same atomic percentage of alloying elements. The results show that the Mg-Zn-Y alloy exhibits a lower corrosion rate and higher corrosion resistance compared to the Mg-Zn-Gd alloy, attributed to its lower corrosion current density and the relative high corrosion resistance of the corrosion product layer.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Jianwei Dai, Qiangsheng Dong, Yujin Nie, Yongqiang Jia, Chenglin Chu, Xiaobo Zhang
Summary: The microstructures, mechanical properties, and corrosion behaviors of Mg-4Gd-xY-1Zn-0.5Ca-1Zr (x = 1, 3, and 5 wt.%) alloys under as-cast condition were investigated. It was found that Y addition significantly improved the yield strength and corrosion resistance of the alloys.
MATERIALS & DESIGN
(2022)
