Effect of temperature field and mechanical properties of casting on prediction of hot tearing tendency using FEM thermal stress analysis+1

Ryosuke Takai, Tatsuya Tsunoda, Yasutaka Kawada, Rei Hirohara, Toshimitsu Okane, Makoto Yoshida

研究成果: Article査読

6 被引用数 (Scopus)

抄録

It is known that hot tearing tendency increases with the increase in the cooling rate of casting during the solidification. As the direct control factors of the hot tearing, the cooling rate dependences of the temperature field of the casting and the mechanical property of alloys in the semisolid state have been implied. However, quantitative evaluation is not clarified yet to show which parameters is more important to predict hot tearing tendency. In this study, through the thermal stress analysis using cooling rate-dependent temperature fields of casting and cooling rate-dependent creep parameters in the semi-solid state, hot tearing tendency was predicted for an AlMg alloy during the solidification. For the prediction, the maximum principal creep strain accumulated during the solidification was used as the indicator of hot tearing tendencies. Then, the hot tearing tendencies were compared with experimental results. As a result, in the cooling rate range of this study which was corresponding to gravity die casting, it was found that the temperature fields are relatively more critical to predict hot tearing tendency than the creep parameters.

本文言語English
ページ(範囲)1333-1340
ページ数8
ジャーナルMaterials Transactions
59
8
DOI
出版ステータスPublished - 2018

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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