Article
Nanoscience & Nanotechnology
Xiongpeng Zhou, Hongge Yan, Jihua Chen, Weijun Xia, Bin Su, Xinyu Li, Wensen Huang, Min Song
Summary: By introducing beta(1)' (MgZn2) precipitates through solution treatment and subsequent aging, a new approach has been discovered to improve the damping capacity and mechanical properties of ZK60 magnesium alloy. The coherent orientation relationships between the beta(1)' phase and the a-Mg matrix, as well as the shearing or bypassing of dislocations on the beta(1)' precipitates depending on their sizes and spacing, contribute to the synchronous improvement in mechanical and damping properties of the alloy. The modified Granato-Lucke (G-L) model presented in this work analyzes the favorable damping capacity of the aged ZK60 alloy, where the interaction between the beta(1)' precipitates and the mobile dislocations serves as a new source of energy dissipation.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Huashen Liu, Youping Sun, Jiangmei He, Guojian Luo, Zhang Luo
Summary: The effects of high strain rate rolling on the microstructure, mechanical properties, and damping properties of Mg-0.8Si alloy plates were investigated. The results showed that with increasing strain rate, the fraction of dynamic recrystallization in the alloy increased, leading to a decrease in dislocation density and dislocation tangles. Higher strain rates also resulted in larger grain size, which decreased basal texture and tensile strength. The alloy exhibited a maximum elongation of 8.40% at a strain rate of 20 s(-1). The damping properties increased with strain rate, while the critical strain amplitude decreased.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Materials Science, Multidisciplinary
Xiongpeng Zhou, Hongge Yan, Jihua Chen, Weijun Xia, Huaming Zhu, Bin Su, Min Song
Summary: The effect of texture on the damping capacity of ZK60 magnesium alloy was investigated through compression experiments. It was found that both the dislocation networks, twins, and the basal texture intensity affect the damping capacity. This research provides a direction for the study of high-strength and high-damping magnesium alloys.
MATERIALS SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Songhui Wang, Wencong Zhang, Jianlei Yang, Xeuyan Jiao, Jinqi Pan, Guannan Chu, Xiangyu Dai
Summary: A superior combination of ultra-high tensile strength and elongation was achieved in ZK60 sheet through high-strain rate rolling, attributed to the uniform ultrafine-grained structure and low dislocation density.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Metallurgy & Metallurgical Engineering
L. B. Tong, J. H. Chu, D. N. Zou, Q. Sun, S. Kamado, H. G. Brokmeier, M. Y. Zheng
Summary: In this study, the mechanical properties and damping capacities of ZK60 alloys have been simultaneously improved by a facile multi-directional forging (MDF) processing. The fine equiaxed-grain structure and non-basal texture formed during MDF processing contribute to a good balance between strength and ductility. Additionally, the damping capacity is remarkably improved after MDF processing due to increased dislocation density.
ACTA METALLURGICA SINICA-ENGLISH LETTERS
(2021)
Article
Chemistry, Physical
Zhenzhen Li, Hongge Yan, Jihua Chen, Weijun Xia, Huaming Zhu, Bin Su, Xinyu Li, Min Song
Summary: The damping capacity of high Mg alloyed Al-Mg alloy prepared by high strain rate hot rolling and subsequent cold rolling is studied. The results show that the subsequent cold rolling significantly improves the damping capacity of the alloy, which exhibits high strength and excellent high temperature damping. The cold rolled alloy has a special microstructure with high dislocation density, elongated lamellar grains with shear bands, and a high fraction of LAGBs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Dan Wang, Xiaochun Ma, Ruizhi Wu, Huajie Wu, Jiahao Wang, Shun Zhang, Jinghuai Zhang, Legan Hou
Summary: The combination of extrusion and rolling processes can form twin and LPSO structures in magnesium alloys, which is beneficial for enhancing the damping and mechanical properties of the alloy.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Materials Science, Multidisciplinary
Rui Yang, Qi Wang, Junyan Wang, Yumeng Zhu, Kui Wang, Zhenya Zhang
Summary: This study introduces a heterogeneous lamella (HL) structure in ZK60 alloy fabricated using conventional powder metallurgy techniques. The HL structure consists of soft coarse-grained (CG) lamella embedded in a hard ultrafine-grained (UFG) matrix, resulting in a synergistic combination of strength and elongation.
Article
Materials Science, Characterization & Testing
Yang Yang, Shuangjun Yang, Zhen Wang
Summary: The microstructure evolution of peak-aged ZK60 magnesium alloy under high strain rate deformation was studied, showing that rod-like beta(')(1) phase was the main precipitated phase and precipitate-free regions were present along grain boundaries. High strain rate loading resulted in a large number of twins and dislocations, with thin and long rod-like ss 1' phases observed. With increasing strain rate, some rod-like phases transformed into spherical phases, indicating partial dissolution of original precipitated phases, while microhardness of the samples increased accordingly.
JOURNAL OF TESTING AND EVALUATION
(2021)
Article
Materials Science, Multidisciplinary
Jianheng Cai, Hua Wang, Cheng Qiu, Genghua Cao, Datong Zhang
Summary: ZK60 magnesium alloy is refined through submerged friction stir processing (SFSP), leading to the observation of high-strain-rate superplasticity (HSRS) at elevated temperature. The excellent HSRS is attributed to the uniform fine-grained structure and the relatively high fraction of high-angle grain boundaries, which facilitate grain boundary sliding. Additionally, the presence of dispersed fine particles/precipitates enhances the microstructural stability of the specimens.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Xianna Meng, Datong Zhang, Weiwen Zhang, Cheng Qiu, Daolun Chen
Summary: This study improved the strength and damping capacity of high-Zn AlZn alloys through grain refinement and alloying, and achieved the preparation of fine-grained high-Zn AlZnMgCuZr alloys. The microstructure of the alloys included numerous second-phase particles, high-density nano-sized precipitates, high solute solubility, and many interfaces. These special structural features provided the alloys with excellent strength and damping capacity.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2022)
Article
Chemistry, Physical
Fang Hao, Xianghong Liu, Yuxuan Du, Youchuan Mao, Haisheng Chen, Shaoqiang Li, Kaixuan Wang, Lei Lei
Summary: In this study, a new dual-phase Ti-6Al-2Zr-2Mo-2 Nb-2Sn-1 V alloy was designed based on classical design criteria and the role of alloying elements in titanium alloys. The alloy exhibited a bimodal microstructure and excellent dynamic compressive strength-plasticity-impact absorption energy matching. Its mechanical properties surpassed those of typical titanium alloys, indicating potential applications in high-strain rate environments. © 2023 Elsevier B.V. All rights reserved.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Songhui Wang, Wencong Zhang, Haixuan Wang, Jianlei Yang, Wenzhen Chen, Guorong Cui, Guofeng Wang
Summary: The microstructures, texture characteristics, and mechanical properties of Mg-2.5Nd-0.5Zn-0.5Zr alloy processed by high strain rate rolling at different temperatures were investigated. After processing, the alloy exhibited refined microstructures and uniform distribution, leading to excellent mechanical properties.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Fengjian Shi, Nanying Piao, Hao Wang, Jiheng Wang, Qianhao Zang, Yuhang Guo, Cai Chen, Lu Zhang
Summary: The microstructure, mechanical properties, and texture evolution of the ZK60 alloy were investigated after processing via the extrusion-shearing (ES) method. The alloy exhibited refined grain size, uniform microstructure, improved strength, and increased elongation. The extrusion-shearing process has great potential for the large-scale application of magnesium alloys.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Cong Dang, Jingfeng Wang, Jinxing Wang, Di Yu, Wenxuan Zheng, Changbing Xu, Zihong Wang, Le Feng, Xianhua Chen, Fusheng Pan
Summary: An ultrahigh strain-independent damping in Mg-1Mn alloy was achieved by the cold rolling process. The introduction of non-basal dislocations and stacking faults through cold rolling improved the strength, plasticity, and damping capacity of the alloy. The increase in moveable dislocations and stacking faults effectively enhanced the alloy's damping capacity. This work presents a new strategy for developing high-strength, high-plasticity, and high-damping magnesium alloys.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Industrial
Yuwei Lu, Zhibin Jiang, Na Geng, Shan Jiang, Xiaolan Xie
Summary: This study introduces a new appointment window scheduling approach, which significantly improves customer satisfaction by dynamically allocating admission windows, reducing wait-but-abandon events and departures caused by waiting beyond the admission window.
INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH
(2022)
Review
Engineering, Chemical
Rui Wang, Dayong Yang, Wei Wang, Furui Wei, Yuwei Lu, Yuqi Li
Summary: Nickel-based superalloys are widely used in aerospace, petrochemical, and marine fields due to their excellent oxidation resistance, corrosion resistance, stability, and reliability at various temperatures. However, during the cutting process, the interaction between the tool and the workpiece generates a large amount of cutting heat. The low thermal conductivity of the workpiece causes the cutting heat to accumulate at the contact point, resulting in severe tool wear, reduced tool life, and increased production cost. This paper discusses the tool wear mechanisms in the machining process of nickel-based superalloys and summarizes the research status of failure mechanisms and tool wear optimization. It highlights the importance of controlling heat and improving the tool environment to prolong the service life of tools. The development prospects of tool wear prevention measures in the field of nickel-based alloy machining are also described.
Article
Computer Science, Artificial Intelligence
Mengting Zhao, Yuwei Lu