軽金属
Online ISSN : 1880-8018
Print ISSN : 0451-5994
ISSN-L : 0451-5994
検索
詳細検索
OR
閲覧
検索
73 巻, 9 号
選択された号の論文の4件中1～4を表示しています
すべての抄録を表示する
    • |<
    • <
    • 1
    • >
    • >|
研究論文
  • Al-2%Si合金の共晶凝固過程における力学特性に及ぼすSrの影響
    平野 椋己, 尾崎 祥梧, 永田 益大, 松下 彬, 坂本 敏夫, 折尾 寛太, 沖村 泰彦, 岡根 利光, ムハマド ハイリ ファイズ, ...
    2023 年 73 巻 9 号 p. 447-454
    発行日: 2023/09/15
    公開日: 2023/10/15
    DOIhttps://doi.org/10.2464/jilm.73.447a
    ジャーナル フリー
    抄録を表示する抄録を非表示にする

    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.

    抄録全体を表示
    PDF形式でダウンロード (4407K)
解説
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top