| Modeling continuous dynamic recrystallization of lightweight alloys by coupling polycrystal plasticity approach | |
| Chen,S F1; Zhang,S H1; Song,H W1; Lee,M G2 | |
| 2021-06-01 | |
| Source Publication | IOP Conference Series: Materials Science and Engineering
 |
| ISSN | 1757-8981 |
| Volume | 1157Issue:1 |
| Abstract | Abstract In the thermo-mechanical process of lightweight alloys, such as aluminum alloys, complex microstructure evolutions are inevitably involved via the continuous dynamic recrystallization (CDRX) featured with extensive formation of subgrains followed by progressive transition into new grains. In this study, a novel fully integrated CDRX-VPSC (visco-plastic self-consistent) model is established. First, numerical formulations for formation and rotation of subgrains are addressed by reasonably tackling the grain boundary characteristics, and also the concept of generation for CDRX grains is newly introduced. By considering these two aspects, the grain population is updated according to the complex grain boundary evolutions. In the VPSC module of the integrated modeling, the shear strain rate, dislocation density, and orientation are calculated to update the grain populations and grain sizes in the CDRX module. The validation of the proposed model is conducted by simulating the hot compression of extruded AA7075 sheet, in which the DRX mechanism is controlled by the subgrain related dynamic recovery (DRV) and CDRX. The simulated flow stresses, microstructural evolutions (grains size and DRX fractions), and texture features agree well with reported experimental observations. |
| DOI | 10.1088/1757-899X/1157/1/012068 |
| Language | 英语 |
| WOS ID | IOP:1757-8981-1157-1-012068 |
| Publisher | IOP Publishing |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/159420 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 1.Shi-Changxu Innovation Center of Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China 2.Department of Materials Science and Engineering & Research Institute of Advanced Materials (RIAM), Seoul National University, Seoul 08826, Republic of Korea |
| Recommended Citation GB/T 7714 | Chen,S F,Zhang,S H,Song,H W,et al. Modeling continuous dynamic recrystallization of lightweight alloys by coupling polycrystal plasticity approach[J]. IOP Conference Series: Materials Science and Engineering,2021,1157(1). |
| APA | Chen,S F,Zhang,S H,Song,H W,&Lee,M G.(2021).Modeling continuous dynamic recrystallization of lightweight alloys by coupling polycrystal plasticity approach.IOP Conference Series: Materials Science and Engineering,1157(1). |
| MLA | Chen,S F,et al."Modeling continuous dynamic recrystallization of lightweight alloys by coupling polycrystal plasticity approach".IOP Conference Series: Materials Science and Engineering 1157.1(2021). |
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