한국주조공학회지 (Journal of Korea Foundry Society)

  • 제34권5호
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  • Pages.156-161
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  • 2014
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  • 1598-706X(pISSN)
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  • 2288-8381(eISSN)
한국주조공학회 (Korea Foundry Society)
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Al2Ca를 함유한 A356 합금에서의 다양한 열처리 조건에 따른 공정 Si 개량화 거동

Modification Behavior of Eutectic Si with Varying Heat Treatment Conditions in A356 Alloy with Al2Ca

  • 김세준 (한국생산기술연구원 희소금속연구실용화그룹) ;
  • 현승균 (인하대학교 신소재공학부) ;
  • 김세광 (한국생산기술연구원 희소금속연구실용화그룹) ;
  • 윤영옥 (한국생산기술연구원 희소금속연구실용화그룹)
  • Kim, Se-Jun (Rare Metal R&BD Group, Korea Institute of Industrial Technology) ;
  • Hyun, Soong-Keun (Dep. Adv. Mater. Eng., Inha Univ.) ;
  • Kim, Shae K. (Rare Metal R&BD Group, Korea Institute of Industrial Technology) ;
  • Yoon, Young-Ok (Rare Metal R&BD Group, Korea Institute of Industrial Technology)
  • 투고 : 2014.09.03
  • 심사 : 2014.10.16
  • 발행 : 2014.10.31
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초록

This study is focused on the effect of $Al_2Ca$ as a modifier on eutectic Si modification of A356 alloy. Microstructural observation was carried out for as-cast, as-solution treated and as-aged samples. Solution treatment and aging were performed for 2, 4, 6 and 10 hrs at $540^{\circ}C$ and $170^{\circ}C$, respectively. Although A356 alloy, which $Al_2Ca$ was added, has no significant difference in as-cast phases with normal A356 alloys, it shows much more modified eutectic Si, grain refinement and improved tensile property both in as-cast and as-heat treated conditions. TGA result shows that $Al_2Ca$ added A356 alloy has a certain improvement in oxidation resistance.

키워드

참고문헌

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피인용 문헌

  1. Mg+Al2Ca 첨가 ADC12 (Al-Si-Cu) 합금의 미세조직, 인장 및 고주기 피로 특성 vol.26, pp.5, 2014, https://doi.org/10.5228/kstp.2017.26.5.306
  2. ADC12 다이캐스팅 합금의 미세조직 및 기계적 특성에 미치는 개량 원소 첨가의 영향 vol.28, pp.1, 2014, https://doi.org/10.5228/kstp.2019.28.1.34
  3. Heat Treatment Map of Al2Ca-added AlSi11MnMg Pressure-Cast Alloy Plotted by Full Factorial Design of Experiment and Analysis of Variance vol.61, pp.7, 2019, https://doi.org/10.1007/s11041-019-00454-7