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

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish
Pages (from-to)2371-2377
Number of pages7
JournalMaterials Transactions
Volume61
Issue number12
DOIs
Publication statusPublished - 2020 Nov 25

Keywords

  • Aluminum alloy
  • Hot tearing
  • Semi-solid
  • Viscosity

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Viscosity properties prediction of semi-solid aluminum alloys using finite element analysis based on quenched solidified structure, and experimental validation'. Together they form a unique fingerprint.

Cite this