A Visualized Microstructure Evolution Model Integrating an Analytical Cutting Model with a Cellular Automaton Method during NiTi Smart Alloy Machining
| Autor: | Jiaqi Wang, Ming Li, Qingguang Li, Xianchao Pan, Zixuan Wang, Jing Jia, Renti Liu, Yunguang Zhou, Lianjie Ma, Tianbiao Yu |
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| Jazyk: | angličtina |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Crystals, Vol 14, Iss 8, p 672 (2024) |
| Druh dokumentu: | article |
| ISSN: | 14080672 2073-4352 |
| DOI: | 10.3390/cryst14080672 |
| Popis: | In this study, a visualized microstructure evolution model for the primary shear zone during NiTi smart alloy machining was established by integrating an analytical cutting model with a cellular automaton method. Experimental verification was conducted using an invented electromagnet rotation-type quick-stop device. The flow stress curve during the dynamic recrystallization of the NiTi smart alloy, the influence of relevant parameters on the dynamic recrystallization process, and the distribution of dynamic recrystallization in the primary shear zone were studied via the model. The simulation results showed that strain rate and deformation temperature significantly affect the relevant parameters during the dynamic recrystallization process. Three typical shear planes were selected for a comparison between simulation results and experimental results, with a minimum error of 3.76% and a maximum error of 11.26%, demonstrating that the model accurately simulates the microstructure evolution of the NiTi smart alloy during the cutting process. These results contribute theoretical and experimental insights into understanding the cutting mechanism of the NiTi smart alloy. |
| Databáze: | Directory of Open Access Journals |
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