Effect of Isothermal Heat Treatment on the Semi-solid Microstructure of AM60-1Si Alloy

doi:10.3969/j.issn.1000-1093.2016.04.017

Abstract

Abstract: The effect of isothermal heat treatment on the microstructure of semi-solid AM60-1Si alloy is investigated. The results show that the semi-solid microstructure evolution of AM60-1Si alloy experiences three stages, i.e., formation of globular particles, spheroidization and coarsening, during isothermal heat treatment process. With the increase in holding temperature and holding time, the size of primary α-Mg phase decreases at first and then increases. The fine well-distributed globular semi-solid microstructure can be obtained at 605 ℃ for 45 min. The Mg₂Si phase changes from initial Chinese script shape to polygon shape during isothermal heat treatment.

Key words: metallic material, semi-solid, Mg₂Si, isothermal heat treatment, microstructure

CLC Number:

TG146.22

HU Yong， RAO Li， ZUO Tian-ping. Effect of Isothermal Heat Treatment on the Semi-solid Microstructure of AM60-1Si Alloy[J]. Acta Armamentarii, 2016, 37(4): 690-695.

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