Al-2%Si合金(7)共晶凝固過程(mt苍 力学特性G及(rTSr(7)影響

Rio Hirano*, Shogo Ozaki, Yoshihiro Nagata, Akira Matsushita, Toshio Sakamoto, Kanta Orio, Yasuhiko Okimura, Toshimitsu Okane, Muhammad Khairi Faiz, Makoto Yoshida


研究成果: Article査読


Al-Si alloys have lower hot tearing susceptibility (HTS) than other aluminum alloys. However, hot tearing occurs under certain casting conditions. It is known that the Sr addition reduces the HTS because of the enhancement of crack-healing. Meanwhile, an influence of Sr addition on the tensile strength, ductility, and viscous properties during eutectic solidification has not yet been clarified. In this study, we investigated the influence of Sr addition on these properties during eutectic solidification. The tensile tests during eutectic solidification were conducted for Al- 2Si and Al-2Si-Sr alloys. The results show that the Sr addition did not affect the viscous properties. On the other hand, the tensile strength and elongation during the latter half of eutectic solidification increased by Sr addition. Consequently, the HTS reduction by Sr addition should be attributed to the improvement of ductility. It was suggested that the increase in the elongation by Sr addition should result from the decrease in the tensile stress, which affects the opening and propagation of hot tearing, due to the increase in porosity near the crack.

寄稿の翻訳タイトルInfluence of Sr on mechanical properties of Al-2%Si alloys during eutectic solidification
ジャーナルKeikinzoku/Journal of Japan Institute of Light Metals
出版ステータスPublished - 2023

ASJC Scopus subject areas

  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学


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