Journal of the Korean Society for Precision Engineering (한국정밀공학회지)
- Volume 15 Issue 7
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- Pages.129-138
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- 1998
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- 1225-9071(pISSN)
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- 2287-8769(eISSN)
Prediction of Microstructural Evolution in Hot Forging of Steel by the Finite Element Method
유한요소법에 의한 열간성형공정에서 강의 미세조직변화 예측
Abstract
The objective of this study is to demonstrate the ability of a computer simulation of microstructural evolution in hot forging of C-Mn steels. The development of microstructure is strongly dependent on process variables and metallurgical factors that affect time history of thermodynamical variables such as temperature, strain. and strain rate during deformation. Then finite element method is applied for the prediction of microstructural evolution, and it should be coupled with heat transfer analysis to consider the change of thermodynamical properties during forming process. In this study, Yada's recrystallization model and rigid-thermoviscoplastic finite element method are employed in order to analyze microstructural evolution during hot forging process. To show the validity and effectiveness of the proposed method, experiments are accomplished and the results of experiments are compared with those of simulations.
Keywords
- Dynamic Recrystallization;
- Static Recrystallization;
- Grain Growth;
- Volume Fraction of Recrystallization;
- Rigid-Thermoviscoplastic Finite Element Method
- 동적재결정;
- 정적재결정;
- 결정립성장;
- 재결정률;
- 강열점소성 유한요소법;