Prediction and experimental validation of cooling rate dependence of viscoplastic properties in a partially solidified state of Al-5mass%Mg alloy

Rei Hirohara, Yasutaka Kawada, Ryosuke Takai, Mitsuhiro Otaki, Toshimitsu Okane, Makoto Yoshida

研究成果: Article査読

抄録

To predict hot tearing in direct chill (DC) casting and shape casting of aluminum alloys using thermal stress analysis, cooling rate dependence of viscoplastic properties in a partially solidified state is indispensable. Based on viscoplastic properties determined from experiments, this study develops a method to predict the temperature dependence of viscoplastic properties at an arbitrary cooling rate through the Clyne-Kurz microsegregation model. For validation of the developed method, tensile tests were performed on Al-5 mass%Mg alloy in a partially solidified state at three cooling rates. Results show good agreement between the predicted values and experimentally obtained values, which demonstrates that the developed method is effective for predicting the cooling rate dependence of viscoplastic properties.

本文言語English
ページ(範囲)214-221
ページ数8
ジャーナルKeikinzoku/Journal of Japan Institute of Light Metals
67
6
DOI
出版ステータスPublished - 2017

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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