Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)
- 2003.05a
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- Pages.307-310
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- 2003
Study on the Cold Formability of Drawn Non-heat Treated Steels
신선 가공된 열처리 생략강의 냉간 성형성에 대한 연구
Abstract
Non-heat treated steels are attractive in the steel-wire industry since the spheroidization and quenching-tempering treatment are not involved during the processing. In this study, three different steels such as dual phase steel, low-Si steel, and ultra low carbon bainitic steel were used to investigate their deformation resistance and forming limit. Deformation resistance was estimated by calculating the deformation energy and the forming limit was evaluated by measuring the critical strain revealing crack initiation at the notch tip of the specimens. The results showed that deformation resistance was the lowest in the low-Si steel, and the forming limit strain was the highest in the ultra low carbon bainitic steel.
Keywords
- Non-heat treated steel;
- Dual phase (DP) steel;
- Ultra low carbon bainite (ULCB) steel;
- Drawing;
- Bauschinger effect;
- Cold formability