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Thermal activation based constitutive model for high-temperature dynamic deformation of AZ31B magnesium alloy

文献类型：期刊论文

作者Xie, Qijun1,2,3; Zhu, Zhiwu1,3; Kang, Guozheng1,3
刊名MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
出版日期2019-01-16
卷号743页码:24-31
ISSN号0921-5093
关键词Magnesium alloys Dynamic constitutive model High strain rate Elevated temperature Microstructure observation
DOI10.1016/j.msea.2018.11.049
产权排序2
文献子类Article
英文摘要Based on the existing experimental results of dynamic deformation at room temperature [1], a high-temperature dynamic test and a few supplementary microstructure observations by using an optical microscope were performed. Based on these experimental results, a thermal-activation-based dynamic constitutive model was proposed to describe the temperature-dependent dynamic deformation of an extruded AZ31B magnesium alloy. In the proposed model, both dislocation slipping and twinning were taken as shear movements with fixed shear planes and directions but with different thermodynamic features. Then, the total flow stress was divided into two parts, i.e., non-thermally and thermally activated ones. In addition, the effects of applied strain, strain rate, and temperature on the dynamic deformation of the extruded AZ31B magnesium alloy were incorporated into the proposed constitutive model. It is demonstrated that the flow stresses predicted by the proposed model show good agreement with the experimental results. -
WOS关键词FCC METALS ; PLASTICITY ; EQUATIONS ; EVOLUTION ; BEHAVIOR ; BCC
资助项目National Key Research and Development Program of China[2016YFB1200505] ; National Natural Science Foundation of China[11672253] ; Applied Basic Research Project of Science and Technology Department of Sichuan Province, China[2017JY0221]
WOS研究方向Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种英语
出版者ELSEVIER SCIENCE SA
WOS记录号WOS:000456891500003
源URL[http://ir.imde.ac.cn/handle/131551/25069]  
专题成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
通讯作者Zhu, Zhiwu
作者单位1.Southwest Jiaotong Univ, State Key Lab Tract Power, Chengdu 610031, Sichuan, Peoples R China;
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China;
3.Southwest Jiaotong Univ, Sch Mech & Engn, Appl Mech & Struct Safety Key Lab Sichuan Prov, Chengdu 610031, Sichuan, Peoples R China
推荐引用方式
GB/T 7714		 Xie, Qijun,Zhu, Zhiwu,Kang, Guozheng. Thermal activation based constitutive model for high-temperature dynamic deformation of AZ31B magnesium alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,743:24-31.
APA Xie, Qijun,Zhu, Zhiwu,&Kang, Guozheng.(2019).Thermal activation based constitutive model for high-temperature dynamic deformation of AZ31B magnesium alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,743,24-31.
MLA Xie, Qijun,et al."Thermal activation based constitutive model for high-temperature dynamic deformation of AZ31B magnesium alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 743(2019):24-31.

入库方式： OAI收割

来源：成都山地灾害与环境研究所

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