Influence of calcium on the microstructure and properties of an Al-7Si-O.3Mg-xFe Alloy

S. S. Sreeja Kumari, R. M. Pillai, K. Nogita, A. K. Dahle, B. C. Pai

研究成果: ジャーナルへの寄稿学術誌査読

27 被引用数 (Scopus)

抄録

The effect of Ca addition on the microstructure, physical characteristics (density/porosity), and mechanical properties (tensile and impact strength) has been investigated in an Al-7Si-0.3Mg-xFe (x = 0.2, 0.4, and 0.7) alloy. The size of Al-Fe intermetallic platelets (β-Al5FeSi) increased with increasing Fe content. The addition of Ca modified the eutectic microstructure and also reduced the size of intermetallic Fe-platelets, causing improved elongation and impact strengths. A low level of Ca addition (39 ppm) reduced the porosity of the alloys. The tensile strength was decreased marginally with Ca addition. However, Ca addition improved the ductility of the alloy by 18.3, 16.7, and 44 pct and the impact strength by 44, 48, and 15.8 pct for Fe contents of 0.2, 0.4, and 0.7 pct, respectively.

本文言語英語
ページ(範囲)2581-2587
ページ数7
ジャーナルMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
37
8
DOI
出版ステータス出版済み - 8月 2006
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 凝縮系物理学
  • 材料力学
  • 金属および合金

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