Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Characteristics of Pre-Heat Treated Steel for Application to Forging

선조질강 소재의 단조공정 측면에서의 특징

  • 엄재근 ((사)경상대 수송기계부품기술혁신센터) ;
  • 이추실 (경상대학교 대학원 기계공학과) ;
  • 장성민 (경상대학교 대학원 기계공학과) ;
  • 안순태 (삼화강봉(주)) ;
  • 손요헌 (영신금속공업(주)) ;
  • 현성운 (태양금속공업(주)) ;
  • 김혁 (현대자동차(주)) ;
  • 윤덕계 (한국생산기술연구원) ;
  • 전만수 (경상대학교 기계항공공학부)
  • Published : 2009.10.01
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Abstract

In this paper, plastic deformation behaviors of ESW105 and SCM435 steels are revealed by simulations and experiments. ESW105 is the special pre-heat-treated steel characterized by high initial yield strength and negligible strain-hardening behavior. The flow stresses of the two steels for large stain are calculated from tensile tests. Axial and lateral compressions of cylindrical bars are tested and simulated and the deformed shapes are compared to characterize the plastic deformation behaviors of the two materials. A forward extrusion process of a cylindrical bar is also simulated to reveal the difference. It has been shown that there are pretty much difference in plastic flow between ESW105 and SCM435 which causes from the difference in strain-hardening capability, implying that the experience-oriented design rules for common commercial materials may lead to failure in process design when the new material of ESW105 is applied without consideration of its plastic deformation behavior.

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References

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