Preparation of Al-5V-3B-0.5La Refiner and Research on the Microstructure and Properties of A356 Alloy

Abstract

On the basis of Al-V-B grain refining agent, rare earth element La was added, and Al-5V-3B-0.5La intermediate alloy was prepared by sintering method. The size, distribution, and morphology of nucleation particles in the refining agent at different sintering temperatures and the refining effect on A356 alloy were studied. The experimental results show that with the increase of sintering temperature, the addition of La element reduces the particle size of nucleated particles in the refining agent, makes the distribution more uniform, and has a good grain refinement effect on A356 alloy, with a significant reduction in grain size to around 184.62 µm. It provides reference for the development of high-quality grain refining agents.

Keywords

A356 alloy / Al-5V-3B-0.5La / rare earth elements / grain refinement

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Wuhan University of Technology and Springer-Verlag GmbH Germany, Part of Springer Nature