Prediction of Dynamically Recrystallized Microstructure of AZ31 Magnesium Alloys in Hot Rolling Using an Expanded Dislocation Density Model
文献类型：期刊论文
| 作者 | Wang, Jianqiang1,2,3; Guo, Lili3; Wang, Changfeng3; Zhao, Ying3; Qi, Wei3; Yun, Xinbing3 |
| 刊名 | JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
 |
| 出版日期 | 2022-06-23 |
| 页码 | 9 |
| ISSN号 | 1059-9495 |
| 关键词 | dislocation density dynamic recrystallization magnesium alloys microstructure simulation hot rolling |
| DOI | 10.1007/s11665-022-07086-8 |
| 通讯作者 | Guo, Lili(guolili0822@hotmail.com) |
| 英文摘要 | 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. |
| 资助项目 | Liaoning Provincial Nature Science Foundation of China[2019-MS-035] |
| WOS研究方向 | Materials Science |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000814959500003 |
| 资助机构 | Liaoning Provincial Nature Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/174744]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Guo, Lili |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Dalian Jiaotong Univ, Engn Res Ctr Continuous Extrus, Mat Sci & Engn Sch, Minist Educ, Dalian 116028, 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. |
入库方式： OAI收割
来源：金属研究所
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