Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
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Effect of Hot Forging Ratio and Solution Treatment Temperature on the Mechanical Properties of Incoloy 825 Alloy

Incoloy 825 합금의 기계적 성질에 미치는 열간 단조비와 용체화 온도의 영향

  • Kim, D.H. (Dept. of Metallurgical Engineering, Pukyong National University) ;
  • Park, Y.T. (Dept. of Applied Materials, Korea Polytechnic College VII) ;
  • Son, Y.M. (Dept. of Metallurgical Engineering, Pukyong National University) ;
  • Kang, C.Y. (Dept. of Metallurgical Engineering, Pukyong National University)
  • 김도훈 (부경대학교 금속공학과) ;
  • 박영태 (한국폴리텍대학교 울산캠퍼스 신소재응용과) ;
  • 손영민 (부경대학교 금속공학과) ;
  • 강창룡 (부경대학교 금속공학과)
  • Received : 2018.08.03
  • Accepted : 2018.09.10
  • Published : 2018.09.30
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Abstract

This study was carried out to investigate the effect of hot forging ratio and solution treatment temperature on the mechanical properties of incoloy 825 alloy. With an increasing of the hot forging ratio, grain size and range of grain size was decreased. With an increasing of the solution treatment temperature after 90% forging, grain size and range of grain size was increased. Cr carbides and Ti nitrides was precipitated at below $900^{\circ}C$ and volume fraction of precipitate was increased with an decreasing of the solution treatment temperature. With an increasing of the hot forging ratio, hardness, tensile strength and elongation, toughness was increased. With an increasing of the solution treatment temperature after 90% forging, hardness and strength was increased, elongation and toughness was decreased by grain refinement. With an increasing of the forging ratio, effect of solution treatment temperature on the hardness, strength and elongation was small, but on the toughness was large.

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References

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