Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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Effects of Fe and Si Additions on the Ageing Behaviors for High Strength Al-Cu-Mn-Ti-Zr-Cd Casting Alloys

Fe과 Si의 첨가가 주조용 고강도 Al-Cu-Mn-Ti-Zr-Cd 합금의 시효경화거동에 미치는 영향

  • Kim, Chul-Hyo (School of Material Science and Engineering, Pusan National University) ;
  • Lee, Jeong-Moo (Dept. of Material Eng., Korea Institute of Machinery & Materials) ;
  • Kim, Kyung-Hyun (Dept. of Material Eng., Korea Institute of Machinery & Materials) ;
  • Kim, In-Bae (School of Material Science and Engineering, Pusan National University)
  • 김철효 (부산대학교 금속공학과) ;
  • 이정무 (한국기계연구원 재료기술연구부) ;
  • 김경현 (한국기계연구원 재료기술연구부) ;
  • 김인배 (부산대학교 금속공학과)
  • Published : 2004.02.20
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Abstract

Fe and Si are common impurity elements in the aluminum alloys. In this investigation, the effects of the addition of Fe and Si on the age-hardening behaviors of the Al-Cu-Mn-Ti-Zr-Cd casting alloys were examined through hardness measurements, calorimetric techniques and observation of the transmission electron microscopy. The addition of Fe depresses the formation of GPII and ${\theta}'$, and thus retards the peak aging time and reduces the peak hardness of the Al-Cu-Mn-Ti-Zr-Cd alloys. On the contrary, the addition of Si accelerates the formation of GPII and ${\theta}'$ and thus accelerates age-hardening behaviors of the Al-Cu-Mn-Ti-Zr-Cd alloys.

Keywords

References

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