IMHE OpenIR
Thermal activation based constitutive model for high-temperature dynamic deformation of AZ31B magnesium alloy
Xie, Qijun1,2,3; Zhu, Zhiwu1,3; Kang, Guozheng1,3
2019-01-16
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume743Pages:24-31
SubtypeArticle
Contribution Rank2
AbstractBased 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. -
KeywordMagnesium alloys Dynamic constitutive model High strain rate Elevated temperature Microstructure observation
DOI10.1016/j.msea.2018.11.049
Indexed BySCI
WOS KeywordFCC METALS ; PLASTICITY ; EQUATIONS ; EVOLUTION ; BEHAVIOR ; BCC
Language英语
Funding ProjectNational 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 Research AreaScience & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000456891500003
PublisherELSEVIER SCIENCE SA
EI Accession NumberELSEVIER SCIENCE SA
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Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/25070
Collection中国科学院水利部成都山地灾害与环境研究所
Corresponding AuthorZhu, Zhiwu
Affiliation1.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
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
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.
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