Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Assessment of Grain Size Distribution in Direct Age Processed Alloy 718

직접시효 처리된 Alloy 718의 결정립분포 해석

  • 박노광 (한국기계연구원, 재료기술연구소) ;
  • 김정한 (한국기계연구원, 재료기술연구소) ;
  • 엄칠용 (한국기계연구원, 재료기술연구소) ;
  • 이종수 (포항공과대학교, 신소재공학과) ;
  • 염종택 (한국기계연구원, 재료기술연구소)
  • Published : 2005.05.01
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Abstract

The microstructure evolution of Alloy 718 during the direct age(DA) process was predicted using the recrystallization model and finite element analysis. The DA process of Alloy 718 was performed in two-step forging using capsulated cylindrical billets of 122mm in diameter and 180mm in height. In order to evaluate the microstructural change during the forging, a dynamic recrystallization model of Alloy 718 was implemented onto the user-subroutine of the commercial FEM code. The prediction of microstructure evolution in DA processed Alloy 718 pancake was compared with experimental results.

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