|About this Abstract
||Materials Science & Technology 2019
||Late News Poster Session
||P2-16: Factors Controlling Tensile Strength and Elongation of Aluminum Alloy during Partial Solidification
||Yoshihiro Nagata, Ryosuke Takai, Rei Hirohara, Naoki Endo, Makoto Yoshida
|On-Site Speaker (Planned)
To predict hot tearing of castings, both tensile strength and elongation during solidification are inevitable. For predicting both properties regardless of alloy types, their controlling factor was examined in terms of the solidification microstructure. Previous studies suggested that the fraction of solid cohesion C is closely related to the properties during solidification. This parameter is determined for each solid fraction fS by Campbell’s model using the dihedral angle θ of liquid phase formed at grain boundary. However, no report describes the relationship between both tensile strength and elongation obtained by tensile test during solidification and the fraction of solid cohesion calculated from the actual solidification microstructure of the same test pieces. Therefore, it has not yet been clarified experimentally that the effect of the actual fraction of solid cohesion on tensile properties during solidification. In this study, the above relationship was investigated for both Al-Mg and Al-Cu alloys.