Article
Metallurgy & Metallurgical Engineering
H. Wang, X. Sun, S. Kurukuri, M. J. Worswick, D. Y. Li, Y. H. Peng, P. D. Wu
Summary: Manufacturers have developed magnesium alloys with remarkable properties by adding rare-earth elements to overcome the limitation in formability at room temperature. The rare-earth magnesium alloys behave differently from conventional alloys, especially in terms of their anisotropic and strain rate sensitive behavior. This study investigates the behavior of a rare-earth Mg alloy ZEK100 sheet at room temperature using an elastic viscoplastic self-consistent polycrystal plasticity model. Different strain rate sensitivities are employed by the model to simulate the strain rate sensitive behaviors under different loading directions and rates. The study highlights the importance of using different strain rate sensitivities for each deformation mode in hexagonal close-packed metals.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Nanoscience & Nanotechnology
Di Wang, Shuyang Qin, Jingna Sun, Huagui Huang
Summary: The study found that pulsed current can enhance the plasticity of rare earth magnesium alloys. By comparing the effects of different parameters, it was observed that current density is the most significant factor in improving plasticity. Furthermore, the pulsed current also affects the grain size and anisotropy of the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Metallurgy & Metallurgical Engineering
Weiqin Tang, Jeong Yeon Lee, Huamiao Wang, Dirk Steglich, Dayong Li, Yinghong Peng, Peidong Wu
Summary: The unloading behaviors of the rare-earth magnesium alloy ZE10 sheet were studied using mechanical tests and crystal plasticity modeling. The study found significant anisotropy and loading path dependency in the unloading behaviors of ZE10 sheets. Inelastic strains varied under different loading conditions, with basal slip, twinning, and de-twinning being responsible for the behaviors.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Metallurgy & Metallurgical Engineering
Zijian Yu, Xi Xu, Kang Shi, Baotian Du, Xiuzhu Han, Tao Xiao, Shubo Li, Ke Liu, Wenbo Du
Summary: A low RE containing Mg-3Y-2Gd-1Nd-0.5Zr alloy with high strength-ductility synergy was successfully developed through combined processes of hot extrusion, hot rolling and ageing. The alloy exhibits excellent strength-ductility balance, better than many Mg-RE wrought alloys with higher RE concentration, and comparable to 6061 Al wrought alloy. A novel heterogeneous structure consisting of long-range chain-like structures and precipitate-free zones plays a key role in the concurrent strengthening and toughening of the alloy.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Chemistry, Physical
Qiumin Xie, Yunxin Wu, Tao Zhang, Shunli Peng, Zhongyu Yuan
Summary: The effect of quenching rate on microstructure, residual stress (RS) and mechanical properties of a rare-earth wrought magnesium alloy were investigated. The decrease of quenching rate had little effect on the grain size but affected the presence of twinning, precipitates, and texture, leading to easier brittle fracture after aging. Quenching at 100 degrees C was found to be the best condition, significantly reducing RS and resulting in only a slight decrease in yield stress and hardness compared to quenching at 20 degrees C.
Article
Metallurgy & Metallurgical Engineering
Tianjiao Li, Jinsong Rao, Jiang Zheng, Dongdi Yin, Haoge Shou, Yongfa Zhang, Rong Shi, Weichao Jing, Lihong Xia
Summary: In this study, an obvious in-plane anisotropy of cyclic deformation behavior was observed in an extruded Mg-3Y alloy sheet during strain-controlled tension-compression low-cycle fatigue. The extrusion direction samples displayed better fatigue resistance with almost symmetrical hysteresis loops and longer fatigue life compared with the transverse direction samples. The influences of texture on the deformation modes, cracking modes, and mechanical behavior of Mg-Y alloy sheets under cyclic loading were studied quantitatively and statistically.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Materials Science, Multidisciplinary
Zhipeng Wang, Zhao Shen, Yahuan Zhao, Yang Liu, Bo Hu, Xiaoqing Shang, Jingya Wang, Yangxin Li, Dejiang Li, Jianqiang Zhang, Sergio Lozano-Perez, Frank Czerwinski, Xiaoqin Zeng
Summary: The addition of rare-earth elements can enhance the oxidation resistance of Mg alloys by promoting the formation of continuous oxide scales. Among the added elements, Y has a faster diffusion rate and can facilitate external oxidation. However, the dissolution of Mg12Nd precipitates can accelerate the oxidation process. Therefore, in the design of oxidation-resistant Mg alloys, it is preferred to add RE elements with faster diffusion rates and control the number of thermal unstable precipitates.
MATERIALS TODAY ADVANCES
(2023)
Article
Materials Science, Multidisciplinary
Boris Straumal, Kristina Tsoy, Aleksandr Druzhinin, Valery Orlov, Natalya Khrapova, Gregory Davdian, Gregory Gerstein, Alexander Straumal
Summary: Magnesium-based alloys are highly sought after in the industry due to their lightweight and reliable strength. By alloying magnesium with elements like zirconium, zinc, and rare earth metals, the anisotropy caused by the hexagonal crystal structure of magnesium is effectively addressed. However, the formation of intermetallic phases within the microstructure can weaken the material by providing easy pathways for crack propagation. The study of GB wetting phase transition and controlling GB layers of IP phases becomes crucial to enhance the alloy's mechanical properties and structural integrity. Rating: 9/10.
Article
Nanoscience & Nanotechnology
Junlei Zhang, Shengjie Han, Yuhong Sun, Xiang Chen, Peng Chen, Zulai Li, Guangsheng Huang, Fusheng Pan
Summary: In this study, three types of WE43 plates with different heat treatments were studied. The microstructure and mechanical properties of these plates were investigated. It was found that the number of precipitates increased as a result of aging after extrusion. The coarse grains and high Schmid factor led to the highest hardness and limited plasticity in the solution-aging after extrusion plates. The T5 plates showed the highest strength due to fine grains and multiple precipitates, while the T6 plates exhibited low ductility because of grain boundary and twin boundary cracking.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Engineering, Chemical
Chunyan Tang, Xingwang Zhao, Jinglei Lei, Lingjie Li
Summary: The study prepared a film in lanthanum-nitrate and stearic-acid solutions that can provide durable protection for magnesium alloys, showing superior superhydrophobicity and corrosion resistance. Various durability tests confirmed the effective protection of the film for magnesium alloys.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Metallurgy & Metallurgical Engineering
Yuxuan Liu, Yangxin Li, Qingchun Zhu, Huan Zhang, Xixi Qi, Jinhui Wang, Peipeng Jin, Xiaoqin Zeng
Summary: The study on static recrystallization of a high strain rate compressed Mg-1 Zn alloy found that obtaining more compression twins or coarse twins instead of lenticular tension twins can effectively manipulate the recrystallization process.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Engineering, Aerospace
Xulong Xi, Xiaochuan Liu, Chunyu Bai, Xianfeng Yang, Jialing Yang
Summary: This study investigates the mechanical properties and ballistic impact capacity of 2A16 aluminum alloy under different strain rates. Experimental and numerical simulation methods were used to obtain dynamic mechanical properties, fracture behavior, and ballistic limit velocity. The findings have significant implications for the design and optimization of 2A16 aluminum aerospace engineering structures.
JOURNAL OF AEROSPACE ENGINEERING
(2022)
Article
Engineering, Manufacturing
H. Peng, D. L. Chen, S. F. Guo, H. Hong, K. H. Zheng, X. F. Bai, D. Y. Li, X. Q. Jiang
Summary: The present study investigated the microstructural changes at the Mg/Zn and Al/Zn interfaces of ultrasonic spot welded joints between a rare-earth containing ZEK100 magnesium alloy and an AA6022 aluminum alloy with a zinc interlayer. It was found that diffusion or reaction occurred at both interfaces, with faster reaction at the Mg/Zn interface due to higher Zn diffusion rate in Mg and lower eutectic temperature. Increasing welding energy led to thicker diffusion layer at both interfaces, but the layer at Al/Zn interface was thinner than that at Mg/Zn interface. Joining mechanisms involved mechanical interlocking and metallurgical bonding facilitated by grain refinement during ultrasonic spot welding. The peak tensile lap shear strength occurred at a welding energy of 1000 J, with failure at the diffusion layer of the Mg/Zn interface.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Metallurgy & Metallurgical Engineering
M. G. Jiang, C. Xu, H. Yan, T. Nakata, Z. W. Chen, C. S. Lao, R. S. Chen, S. Kamado, E. H. Han
Summary: This study investigated the static recrystallization and texture evolution in an extruded Mg-Zn-Gd alloy, providing direct evidence of rare earth (RE) texture evolution during grain growth. The research findings contribute to understanding the mechanisms involved in forming RE texture during extrusion and developing wrought Mg alloys with improved formability.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Metallurgy & Metallurgical Engineering
Jayme Keist, Yuandong Li, Diran Apelian
Summary: The response of a magnesium-rare earth alloy to rapid heating using a fluidized bed heat treating process was investigated. The alloy showed efficient solution treating and aging within a short time period, and the fluidized bed process significantly reduced the holding times.
INTERNATIONAL JOURNAL OF METALCASTING
(2022)
