Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)
- 2008.05a
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- Pages.439-443
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- 2008
Study on Mechanical Behavior of a Pre-Heat Treated Steel of ESW95
선조질강 ESW95의 기계적 성질에 관한 연구
- Park, J.T. ;
- Eom, J.G. ;
- Kim, J.H. ;
- Youn, D.J. ;
- Joun, M.S.
- 박지태 (삼화강봉(주)) ;
- 엄재근 ((사)경상대 수송기계부품기술현신센터) ;
- 김종훈 (태양금속공업(주)) ;
- 윤덕재 (한국생산기술연구원) ;
- 전만수 (경상대학교 기계항공공학부/항공기부품기술연구소)
- Published : 2008.05.08
Abstract
We investigate the mechanical behavior of a pre-heat treated steel of ESW95, which is being used for automotive parts including tie-rods to save manufacturing cost and enhance product quality. SCM435 is also investigated to reveal the characteristics of the pre-heat treated steel tested. AFDEX/MAT is used to extract the true stress-strain curve over the large strain with higher accuracy. It has been found that ESW95 has very week strain-hardening behavior which can be negligible compared with SCM435 and that the initial yield strength is quite high and the toughness of ESW95 reaches nearly 75% of SCM435. ESW95 is characterized by the weak strain-hardening behavior and high yield strength that can be lead to minimization of post-processing including heat treatment and straightening. ESW95 and SCM435 are also compared by applying them to ball-stud forging by computer simulation. It is expected that a great deal of change may take place in production as well as in service if the pre-heated steels are adopted.