한국주조공학회지 (Journal of Korea Foundry Society)

  • 제26권5호
  • /
  • Pages.211-216
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  • 2006
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  • 1598-706X(pISSN)
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  • 2288-8381(eISSN)
한국주조공학회 (Korea Foundry Society)
권호 표지

경량합금 반용융 압출 기술 개발 - Part 1. 반융용 압출을 위한 조직제어

Development of Thixoextrusion Process for Light Alloys - Part 1. Microstructural Control of Light Alloys for Thixoextrusion

  • Kim, Shae-K. (Adv. Mater. Div., Korea Institute of Industrial Technology) ;
  • Yoon, Young-Ok (Adv. Mater. Div., Korea Institute of Industrial Technology) ;
  • Jang, Dong-In (Adv. Mater. Div., Korea Institute of Industrial Technology) ;
  • Jo, Hyung-Ho (Adv. Mater. Div., Korea Institute of Industrial Technology)
  • 발행 : 2006.10.20
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초록

The study for thixoextrusion process of 7075, 7003 Al wrought alloys and AZ31 Mg wrought alloy was carried out with respect to reheating rate, isothermal holding temperature and time with an emphasis to the effect of homogenization on thixotropic micro-structures during the partial remelting, especially in the low liquid fraction ($f_L<0.2$). The liquid fraction and average grain size with respect to reheating profile such as reheating rate, isothermal holding temperature and time were almost uniform. It is considered very useful for thixoextrusion in terms of process control such as billet temperature control and actual extrusion time. Micro-structural controls of 7075, 7003 Al wrought alloys and AZ31 Mg wrought alloy before and after homogenization were available and thixotropic microstructures were obtained in both specimens.

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참고문헌

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