Viscosity properties prediction of semi-solid aluminum alloys using finite element analysis based on quenched solidified structure, and experimental validation

Naofumi Takatori*, Mami Amano, Ryousuke Miyachi, Yoshihiro Nagata, Muhammad Khairi Faiz, Makoto Yoshida

*この研究の対応する著者

研究成果: Article査読

抄録

For predicting hot tearing during casting process, viscosity properties and constitutive equations in the semi-solid region are required. In this research, viscosity properties of two alloys, which are Al5 mass%Mg alloy with TiB grain-refiner and Al2 mass%Cu alloy with TiB grain-refiner, are estimated using the image-based modelling method as suggested by Matsushita et al. As to the mechanical properties of the solid phase in semi-solid region, it is found that by using the temperature dependent value rather than the value just below the solidus temperature, the prediction accuracy of the viscosity value in semi-solid region has increased. By comparing the obtained numerical properties with the experimental properties, it is found that the method can predict the viscosity properties of Al5 mass%Mg alloy and Al2 mass%Cu alloy in the semi-solid region at the solid fraction where hot tears are likely to occur.

本文言語English
ページ(範囲)2371-2377
ページ数7
ジャーナルMaterials Transactions
61
12
DOI
出版ステータスPublished - 2020 11 25

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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