• 제목/요약/키워드: Computer Aided Instrumented Charpy impact test

검색결과 1건 처리시간 0.015초

AC2B 알루미늄합금의 고온용해에 의한 금속간화합물 ${\beta}-AlFeSi$상 형상계량 효과 (Effects of Melt Super-heating on the Shape Modification of ${\beta}-AlFeSi$ Intermetallic compound in AC2B Aluminum Alloy)

  • 김헌주
    • 한국주조공학회지
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    • 제21권3호
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    • pp.179-186
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    • 2001
  • Melt super-heating which promotes shape modification of ${\beta}$ intermetallic compounds was conducted to improve mechanical properties of recycled AC2B aluminum alloy. Modification of needle-shape ${\beta}$ intermetallic compounds was effective for the specimens of AC2B aluminum alloys containing 0.85wt.% Fe by melt super-heating, in which the melts had been held at $850^{\circ}C$ or $950^{\circ}C$ for 30 minutes respectively. Owing to the modification of needle-shape of ${\beta}$ intermetallic compounds by melt superheating of the alloy with containing 0.85wt.% Fe to $950^{\circ}C$, increases in elongation and tensile strength were prominent to be more than double and 55% respectively in comparison with the melt heated to $740^{\circ}C$. Moreover, modification of needle-shape ${\beta}$ intermetallic compounds in the alloy containing O.85wt.% Fe by $950^{\circ}C$ melt super-heating led to 48% improvement of the value of impact absorbed energy as compared with the melt heated to $740^{\circ}C$.

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