| Modelling continuous dynamic recrystallization of aluminum alloys based on the polycrystal plasticity approach | |
| Chen, S. F.1,2; Li, D. Y.3; Zhang, S. H.4; Han, H. N.1,2; Lee, H. W.5; Lee, M. G.1,2 | |
| Corresponding Author | Lee, M. G.(myounglee@snu.ac.kr) |
| 2020-08-01 | |
| Source Publication | INTERNATIONAL JOURNAL OF PLASTICITY
 |
| ISSN | 0749-6419 |
| Volume | 131Pages:28 |
| Abstract | A new physically based fully coupled crystal plasticity-continuous dynamic recrystallization (CDRX) frame work at elevated temperature is proposed. The CDRX model reformulates the subgrain formation and rotation, as well as the associated CDRX grain generation that is followed by constrained growth, in the context of crystal plasticity. The coupled CDRX-VPSC (visco-plastic self-consistent) model employs dislocation density based constitutive laws that represent accumulation and recovery of dislocations in the matrix and recrystallized grains. The validation of the proposed model is conducted by simulating the hot compression of extruded aluminum alloy 7075, in which the DRX mechanism is controlled by the subgrain related dynamic recovery (DRV) and CDRX. The simulated flow stresses and microstructural evolutions including DRX fraction, sub- and DRX grain sizes agree well with reported experimental observations of extruded aluminum alloy 7075. Various case studies can be performed using the proposed modeling approach. For example, the study on the effect of the characteristics of initial subgrain boundary is presented by employing both extruded and cast aluminum alloy 7075, which clarifies that a large amount of subgrain boundaries with high misorientation angles can efficiently promote CDRX. Furthermore, enhanced CDRX can be predicted in the extruded aluminum alloy 7075 when its initial grain size is small, which is also in good consistence with the experimental data. |
| Keyword | Continuous dynamic recrystallization Aluminum alloys Crystal plasticity Dislocation density Subgrain |
| Funding Organization | NRF of Korea ; KIAT ; NRF of Korea - Ministry of Science and ICT (MSIT) ; National Natural Science Foundation of China |
| DOI | 10.1016/j.ijplas.2020.102710 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | NRF of Korea[2017R1A2A2A05069619] ; KIAT[N0002598] ; NRF of Korea - Ministry of Science and ICT (MSIT)[2018R1A2B6006856] ; National Natural Science Foundation of China[51675331] |
| WOS Research Area | Engineering ; Materials Science ; Mechanics |
| WOS Subject | Engineering, Mechanical ; Materials Science, Multidisciplinary ; Mechanics |
| WOS ID | WOS:000553470000007 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/140028 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Lee, M. G. |
| Affiliation | 1.Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 08826, South Korea 2.Seoul Natl Univ, Res Inst Adv Mat RIAM, Seoul 08826, South Korea 3.Shanghai Jiao Tong Univ, State Key Lab Mech Syst & Vibrat, Shanghai 200240, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 5.Korea Inst Mat Sci, Chang Won 51508, South Korea |
| Recommended Citation GB/T 7714 | Chen, S. F.,Li, D. Y.,Zhang, S. H.,et al. Modelling continuous dynamic recrystallization of aluminum alloys based on the polycrystal plasticity approach[J]. INTERNATIONAL JOURNAL OF PLASTICITY,2020,131:28. |
| APA | Chen, S. F.,Li, D. Y.,Zhang, S. H.,Han, H. N.,Lee, H. W.,&Lee, M. G..(2020).Modelling continuous dynamic recrystallization of aluminum alloys based on the polycrystal plasticity approach.INTERNATIONAL JOURNAL OF PLASTICITY,131,28. |
| MLA | Chen, S. F.,et al."Modelling continuous dynamic recrystallization of aluminum alloys based on the polycrystal plasticity approach".INTERNATIONAL JOURNAL OF PLASTICITY 131(2020):28. |
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