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Study of Sr-Zr Compound Treatment of Al-Si Cast Alloys

Bingyi Liu

Abstract

The technology of Sr-Zr compound treatment of Al-Si cast alloys and its effects on the microstructure and properties of near-eutectic Al-Si cast alloy were studied.It was found that the compound treatment could refine the grain of near-eutectic Al-Si cast alloy obviously and reduce the average dimension of its grain to about (100 μm) with eutectic Si also being in excellent modifying state,as a result there was a significant improvement for mechanical properties of the alloy.

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Key concepts: Eutectic system, Materials science, Alloy, Microstructure, Metallurgy, Grain size, Solid-state, Engineering