Article
Materials Science, Multidisciplinary
T. Nakata, C. Xu, H. Yamato, L. Geng, S. Kamado
Summary: The addition of Al and Ca microelements can improve the mechanical properties of magnesium alloys, but Al addition can deteriorate corrosion resistance, while the single addition of Ca can help increase both tensile and compressive yield strengths and improve yield anisotropy. This property improvement was achieved without compromising corrosion resistance. A ViscoPlastic Self-Consistent simulation showed that the single Ca addition effectively enhanced the hardening of basal and prismatic slips, resulting in improved yield strength in both tension and compression.
MATERIALS CHARACTERIZATION
(2022)
Article
Materials Science, Multidisciplinary
Yuanxiao Dai, MengHan Xiao, Yaobo Hu, Yan Yang, Bin Jiang, Tianxu Zheng, Li Dong, Baoqing Yang, Changyong Zheng
Summary: By designing extrusion parameters, the Mg-0.12Ca-0.08Ba alloy underwent grain refinement and texture control, resulting in the best performance of the extruded samples with different crystallographic orientations.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Shuaiju Meng, Mingchi Zhang, Haoran Xiao, Zhanju Luo, Wei Yu, Runlin Jiang, Xueqi Cheng, Lidong Wang
Summary: A micro-alloyed Mg-1.45Bi-0.79Ca alloy fabricated by single pass extrusion exhibits high tensile yield strength and moderate elongation, which is mainly attributed to the synergy effects of ultra-fine dynamic recrystallized grains, nano-precipitates, residual dislocations, sub-grain boundaries, and strong fiber texture.
Article
Materials Science, Multidisciplinary
Dong Hee Lee, Sang-Hoon Kim, Hyun Ji Kim, Byoung Gi Moon, Young Min Kim, Sung Hyuk Park
Summary: The extrusion speed has a significant impact on the microstructure and tensile properties of the AZXWMM91100 alloy. As the extrusion speed increases, the grain size gradually increases, leading to a decrease in tensile strength and a fluctuation in elongation.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Jian Bao, Quanan Li, Xiaoya Chen, Qian Zhang, Ziyi Chen
Summary: This study successfully designed a Mg-Gd based alloy with improved extrudability under differential-thermal condition, resulting in excellent mechanical properties. The as-extruded alloy exhibited good ductility with elongation of 14.3% at room temperature and 26.2% at 250°C, while the peak-aged alloy showed significantly enhanced strength.
MATERIALS RESEARCH EXPRESS
(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
Stefan Gneiger, Nikolaus P. Papenberg, Aurel R. Arnoldt, Carina M. Schloegl, Martin Fehlbier
Summary: Magnesium alloys are of particular interest in transportation due to their low mass and high specific stiffness. While widely accepted in high-volume applications such as gearbox housings and steering wheels, they currently find little to no industrial use in forming processes like extrusion and forging. Research on high-strength Mg alloys is ongoing worldwide, mostly relying on high levels of rare earths, raising questions about their ecological and economic sustainability.
Article
Materials Science, Multidisciplinary
Yuwei Song, Kezhen Yuan, Xian Li, Yang Qiao
Summary: This paper investigates the effect of extrusion temperature on the mechanical properties of magnesium alloy, aiming to improve its performance as a medical material. The results show that lower extrusion temperatures lead to higher tensile strength of the material.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Jian Wang, Hongxiang Li, Jinhui Wang, Yaohong Liu, Jishan Zhang
Summary: In this study, large-scale Mg-Al-Zn-Mn-Ca-Ni alloys were prepared by a semi-continuous casting and two-step extrusion method, and their microstructure, mechanical properties, and corrosion resistance were investigated. The alloy exhibited excellent mechanical properties and high corrosion rate in a high temperature and high salt environment. This work provides a high-performance, low-cost, and large-scale alloy product for the fabrication of dissoluble fracturing tools.
Article
Chemistry, Physical
Aimin Chu, Yuping Zhao, Rafi Ud-din, Hairong Hu, Qian Zhi, Zerui Wang
Summary: Mg-Al-Ca-Mn alloys with Ca/Al >= 1 were prepared using specific processes to create composites with favorable properties. The presence of the second phase Al2Ca in the alloys was found to be beneficial for enhancing the performance of the alloys.
Article
Materials Science, Multidisciplinary
Shuaiju Meng, Haoran Xiao, Zhanju Luo, Mingchi Zhang, Runlin Jiang, Xueqi Cheng, Haicun Yu
Summary: This study successfully developed a new Mg-6Bi-3Al-1Zn alloy with excellent mechanical properties. The high strength and good ductility of the alloy are attributed to the effective combination of various strengthening mechanisms, providing a new approach to developing high-performance Mg products for larger-scale industrial applications.
Article
Metallurgy & Metallurgical Engineering
Sang-Cheol Jin, Jong Un Lee, Jongbin Go, Hui Yu, Sung Hyuk Park
Summary: This study investigates the effects of Sn addition on the microstructural characteristics and mechanical properties of an extruded Mg-Bi binary alloy. The results show that the addition of Sn significantly decreases the average grain size and improves the tensile strength and ductility of the alloy. These improvements are attributed to grain refinement, Sn solute atoms, and increased dislocation density.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Engineering, Civil
Zahra Nasiri, Hamed Mirzadeh, Mahmoud Sarkari Khorrami, Massoud Emamy
Summary: The synergistic effects of partial replacement of Al with Ca, homogenization heat treatment, and hot extrusion on the microstructure and mechanical properties of Mg-(7-x)Al-xCa magnesium alloys were studied. Homogenization resulted in eutectic constituents spheroidization and tensile ductility improvement, while hot extrusion led to fragmentation and dispersion of particles, formation of fine microstructures, and profound enhancements of tensile properties. The extruded AX43 alloy showed significantly better product of strength and ductility compared to the as-cast counterpart.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(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
Nanoscience & Nanotechnology
Mouxin Wu, Jihua Chen, Hongge Yan, Weijun Xia, Bin Su, Yifu Deng, Yu Shen
Summary: This study investigated the effect of Ca concentration on the microstructure, mechanical properties, and thermal conductivity of Mg-2Ga-xCa (x = 0, 0.2, 0.4, and 0.8 wt.%) alloys at room temperature. Increase in Ca content led to a decrease in grain size and volume fraction of recrystallized grains, resulting in increased yield strength. However, it also caused an increase in the number and size of second phase particles, leading to reduced plasticity. Minor Ca additions (0.2% and 0.4%) had no significant effect on thermal conductivity, but 0.8% Ca addition significantly improved the thermal conductivity of both as-cast and as-extruded alloys. The as-extruded Mg-2Ga-0.8Ca alloy exhibited a tensile yield strength of 244 MPa and a thermal conductivity of 135.5 W·m-1·K-1. It is suggested that Mg alloys with high strength and high thermal conductivity can be designed by selecting appropriate alloying elements to form precipitates instead of dissolving in the Mg matrix.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Y. M. Yan, O. Gharbi, A. Maltseva, X. B. Chen, Z. R. Zeng, S. W. Xu, W. Q. Xu, P. Volovich, M. Ferry, N. Birbilis
Article
Electrochemistry
Yuanming Yan, Peng Zhou, Oumanna Gharbi, Zhuoran Zeng, Xiaobo Chen, Polina Volovitch, Kevin Ogle, Nick Birbilis
ELECTROCHEMISTRY COMMUNICATIONS
(2019)
Article
Materials Science, Multidisciplinary
Ruifeng Zhang, Jinfeng Li, Qian Li, Yuanshen Qi, Zhuoran Zeng, Yao Qiu, Xiaobo Chen, Shravan K. Kairy, Sebastian Thomas, Nick Birbilis
Article
Materials Science, Multidisciplinary
Y. M. Yan, A. Maltseva, P. Zhou, X. J. Li, Z. R. Zeng, O. Gharbi, K. Ogle, M. La Haye, M. Vaudescal, M. Esmaily, N. Birbilis, P. Volovitch
Article
Materials Science, Multidisciplinary
Hucheng Pan, Rui Kang, Jingren Li, Hongbo Xie, Zhuoran Zeng, Qiuyan Huang, Changlin Yang, Yuping Ren, Gaowu Qin
Article
Materials Science, Multidisciplinary
S. H. Salleh, Z. R. Zeng, E. A. McNally, N. Birbilis, M. Musameh, K. Venkatesan, J. R. Kish, J. R. McDermid, C. F. Glover, G. Williams, S. Thomas
Summary: Local scanning electrochemical microscopy (SECM) and scanning vibrating electrode technique (SVET) were used to spatially map anodic and cathodic regions in a complex assembly including a friction stir lap welded joint between two Mg-Al-Mn alloys, namely AM60 and AM30. It was found that the transitory electrochemical characteristics of different regions changed over time in a NaCl solution, with the stir zone and AM60 region showing anodic behavior initially but transitioning to cathodic behavior after exposure.
Article
Materials Science, Multidisciplinary
J. F. Nie, K. S. Shin, Z. R. Zeng
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
(2020)
Article
Engineering, Manufacturing
M. Esmaily, Z. Zeng, A. N. Mortazavi, A. Gullino, S. Choudhary, T. Derra, F. Benn, F. D'Elia, M. Muether, S. Thomas, A. Huang, A. Allanore, A. Kopp, N. Birbilis
ADDITIVE MANUFACTURING
(2020)
Article
Materials Science, Multidisciplinary
Zhuoran Zeng, Mengran Zhou, Peter Lynch, Frederic Mompiou, Qinfen Gu, Mohsen Esmaily, Yuanming Yan, Yao Qiu, Shiwei Xu, Hidetoshi Fujii, Chris Davies, Jian-Feng Nie, Nick Birbilis
Summary: The ductility of extruded polycrystalline pure magnesium with fine grain size is primarily supported by the sliding between grouped grains, grain rotation, and dislocation slip, which postpones the occurrence of localized stress concentration and significantly increases the ductility of pure Mg at room temperature.
Article
Metallurgy & Metallurgical Engineering
Mengran Zhou, Zhuoran Zeng, Chun Cheng, Yoshiaki Morisada, Qingyu Shi, Jian-Yih Wang, Hidetoshi Fujii
Summary: This study systematically investigated the effect of the friction stir processing (FSP) method on the microstructure and mechanical behavior of a Mg-9Li-1Zn alloy. The processing route with alternate odd-numbered and even-numbered passes was found to produce a more uniform microstructure and hardness distribution, resulting in refined grain size and improved mechanical properties of the alloy.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Review
Metallurgy & Metallurgical Engineering
Zhuoran Zeng, Mojtaba Salehi, Alexander Kopp, Shiwei Xu, Marco Esmaily, Nick Birbilis
Summary: Magnesium alloys play a critical role in lightweighting and advanced devices. Additive manufacturing offers new possibilities and applications for the use of magnesium alloys, allowing for the creation of novel physical structures through 3D printing. This review provides a comprehensive exploration of additive manufacturing of magnesium alloys, including the processes used and the measured properties, along with a critical elaboration of the challenges and possibilities in the field of mechanical metallurgy.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
Zhuoran Zeng, Sanjay Choudhary, Marco Esmaily, Felix Benn, Thomas Derra, Yvonne Hora, Alexander Kopp, Antoine Allanore, Nick Birbilis
Summary: In this study, a magnesium-aluminium alloy with outstanding corrosion resistance was developed. It has the lowest degradation rate among all magnesium alloys in relevant corrosive solutions, and even withstands seawater corrosion. The alloy surface maintains a nearly corrosion-free appearance and possesses a low aluminum-containing surface film.
NPJ MATERIALS DEGRADATION
(2022)
Article
Materials Science, Multidisciplinary
Zhuoran Zeng, Mengran Zhou, Marco Esmaily, Yuman Zhu, Sanjay Choudhary, James C. Griffith, Jisheng Ma, Yvonne Hora, Yu Chen, Alessio Gullino, Qingyu Shi, Hidetoshi Fujii, Nick Birbilis
Summary: In this study, a durable dual-phase Mg-Li-Al alloy with low electrochemical degradation rate and high specific strength is successfully designed by a special processing method. The success is attributed to the microstructure and surface layer characteristics of the alloy.
COMMUNICATIONS MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Wei Liu, Zhuoran Zeng, Hua Hou, Jinshan Zhang, Yuman Zhu
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2020)