Prediction of Dynamically Recrystallized Microstructure of AZ31 Magnesium Alloys in Hot Rolling Using an Expanded Dislocation Density Model

doi:10.1007/s11665-022-07086-8

IMR OpenIR

	Prediction of Dynamically Recrystallized Microstructure of AZ31 Magnesium Alloys in Hot Rolling Using an Expanded Dislocation Density Model
	Wang, Jianqiang 1,2,3; Guo, Lili 1; Wang, Changfeng 1; Zhao, Ying 1; Qi, Wei 1; Yun, Xinbing 1
通讯作者	Guo, Lili(guolili0822@hotmail.com)
	2022-06-23
发表期刊	JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
ISSN	1059-9495
页码	9
摘要	Microstructure simulation has been greatly expanded in recent years, particularly for the purpose of microstructural prediction and understanding mechanisms of microstructural evolution in thermal-mechanical processes. The application of microstructure simulation to hot rolling of magnesium alloy sheets will bring a great economic benefit. In this study, a multi-scale coupled dislocation density model of magnesium alloys was developed for predicting the microstructures of rolled AZ31 sheets. The simulations were performed by inserting the expanded dislocation density model into a VUSDFLD subroutine of ABAQUS software. The effects of rolling temperature and speed on dislocation densities of low angle grain boundary and high angle grain boundary and dynamic recrystallization (DRX) volume fraction were investigated by finite element simulations. The simulation results show that the dislocation densities of the high angle grain boundary and low angle grain boundary increase rapidly at the first rolling stage, but decrease slightly with rolling time. The changes of dislocation densities with the rolling time are complicated, which are influenced by an integrated mechanism of work-hardening, dynamic recovery and DRX. The dislocation densities can achieve the highest value when the rolling temperature is in range of 400-450 degrees C. Moreover, the DRX volume fraction is the largest in the surface layer and the smallest in the center layer of the rolled sheets. This is resulted from the distributions of rolling temperature, rolling strain and strain rate from the surface to the center of the rolled sheets. Rolling force decreases with the rolling temperature but increases slightly with the rolling speed. The predicted rolling forces are good in agreement with those of the experiments.
关键词	dislocation density dynamic recrystallization magnesium alloys microstructure simulation hot rolling
资助者	Liaoning Provincial Nature Science Foundation of China
DOI	10.1007/s11665-022-07086-8
收录类别	SCI
语种	英语
资助项目	Liaoning Provincial Nature Science Foundation of China[2019-MS-035]
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000814959500003
出版者	SPRINGER
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/174745
专题	中国科学院金属研究所
通讯作者	Guo, Lili
作者单位	1.Dalian Jiaotong Univ, Engn Res Ctr Continuous Extrus, Mat Sci & Engn Sch, Minist Educ, Dalian 116028, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wang, Jianqiang,Guo, Lili,Wang, Changfeng,et al. Prediction of Dynamically Recrystallized Microstructure of AZ31 Magnesium Alloys in Hot Rolling Using an Expanded Dislocation Density Model[J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,2022:9.
APA	Wang, Jianqiang,Guo, Lili,Wang, Changfeng,Zhao, Ying,Qi, Wei,&Yun, Xinbing.(2022).Prediction of Dynamically Recrystallized Microstructure of AZ31 Magnesium Alloys in Hot Rolling Using an Expanded Dislocation Density Model.JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,9.
MLA	Wang, Jianqiang,et al."Prediction of Dynamically Recrystallized Microstructure of AZ31 Magnesium Alloys in Hot Rolling Using an Expanded Dislocation Density Model".JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE (2022):9.