Microstructure and hardness of Mg-12Zn-xCa alloy after T6 treatment

doi:10.13251/j.issn.0254-6051.2020.12.044

Abstract

Abstract: Microstructure and hardness of the as-cast Mg-12Zn-xCa (x=0, 1, 2, 3) alloys after T6 treatment were studied. The results show that after T6 treatment, the α-Mg phase in the alloys changes from dendritic crystals to equiaxed grains and is refined, the hardness of the alloy is increased obviously. With the increase of Ca content, the microstructure of T6 treated Mg-12Zn-xCa alloys is refined and the hardness is increased, but when the content of Ca is more than 2%, dendritic crystals appear in the structure and the hardness decreases.

Key words: Mg-12Zn-xCa alloys, T6 treatment, microstructure, hardness

CLC Number:

TG156.9

Wang Bo. Microstructure and hardness of Mg-12Zn-xCa alloy after T6 treatment[J]. Heat Treatment of Metals, 2020, 45(12): 227-230.

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