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Effect of Multi-heating Treatment on Microstructure and Properties of ZL105 Alloy

Zhou Zhongb

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Abstract

Microstructure and mechanical properties of ZL105 alloy in different states were studied. The results show that as-cast microstructure of ZL 105 alloy is mainly dendritic structure and eutectic phases. Dendrite arm spacing increases with the increase of heat treatment time, and eutectic silicon spheroidizes and growths, which weaken the strength and plasticity of ZL105 alloy. After more than three times of repeat heat treatment, the mechanical properties of ZL 105 cannot meet the requirements.

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What this paper is about

Microstructure and mechanical properties of ZL105 alloy in different states were studied. The results show that as-cast microstructure of ZL 105 alloy is mainly dendritic structure and eutectic phases. Dendrite arm spacing increases with the increase of heat treatment time, and eutectic silicon spheroidizes and growths, which weaken the strength and plasticity of ZL105 alloy. After more than three times of repeat heat treatment, the mechanical properties of ZL 105 cannot meet the requirements.

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Available abstract

Microstructure and mechanical properties of ZL105 alloy in different states were studied. The results show that as-cast microstructure of ZL 105 alloy is mainly dendritic structure and eutectic phases. Dendrite arm spacing increases with the increase of heat treatment time, and eutectic silicon spheroidizes and growths, which weaken the strength and plasticity of ZL105 alloy. After more than three times of repeat heat treatment, the mechanical properties of ZL 105 cannot meet the requirements.

Key concepts: Microstructure, Eutectic system, Alloy, Materials science, Dendrite (mathematics), Metallurgy, Plasticity, Composite material

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