Effects of High Temperature Heat Treatment on Microstructure and Properties of Squeeze Casting Mg<sub>93</sub>YZn<sub>6</sub> Magnesium Alloy

Wang Bing; Zhao Yuhong; Jin Yuchun; Tian Jinzhong; Hou Hua

doi:10.15980/j.tzzz.2020.03.011

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Effects of High Temperature Heat Treatment on Microstructure and Properties of Squeeze Casting Mg₉₃YZn₆ Magnesium Alloy
Vol. 40, Issue 3, Pages: 282-285(2020)
Published： 2020 ，
DOI： 10.15980/j.tzzz.2020.03.011

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[1]王冰,赵宇宏,靳玉春,田晋忠,侯华.热处理对挤压铸造Mg_(93)YZn_6合金组织和性能的影响[J].特种铸造及有色合金,2020,40(03):282-285.

Wang Bing, Zhao Yuhong, Jin Yuchun, et al. Effects of High Temperature Heat Treatment on Microstructure and Properties of Squeeze Casting Mg₉₃YZn₆ Magnesium Alloy. [J]. Special Casting & Nonferrous Alloys 40(3):282-285(2020)
[1]王冰,赵宇宏,靳玉春,田晋忠,侯华.热处理对挤压铸造Mg_(93)YZn_6合金组织和性能的影响[J].特种铸造及有色合金,2020,40(03):282-285. DOI： 10.15980/j.tzzz.2020.03.011.

Wang Bing, Zhao Yuhong, Jin Yuchun, et al. Effects of High Temperature Heat Treatment on Microstructure and Properties of Squeeze Casting Mg₉₃YZn₆ Magnesium Alloy. [J]. Special Casting & Nonferrous Alloys 40(3):282-285(2020) DOI： 10.15980/j.tzzz.2020.03.011.

摘要

采用挤压铸造法制备了Mg

YZn

合金

并对其进行高温热处理

分析了铸态和热处理态的Mg

YZn

合金的微观组织、显微硬度和力学性能。结果表明

该合金的挤压铸造和热处理后的组织中均只有α-Mg基体相和准晶I相生成。经500℃×4h热处理后

合金中的准晶相含量与铸态合金中变化不大。经550℃×2h热处理后

合金中的准晶相有所减少。与铸态合金相比

热处理后合金的硬度、抗拉强度和伸长率均提高。

Abstract

YZn

alloy was prepared by squeeze casting

and then it was treated by heat treatment at high temperature.The microstructure

microhardness and mechanical properties of the as-cast and heat-treated Mg

YZn

alloy were analyzed by OM

SEM and tensile testing.The results reveal that theα-Mg matrix and the qusaicrystal I-phase are generated in the microstructure after squeeze casting and heat treatment.After heat treatment at 500℃for 4 h

the content of quasicrystal phase can be ignored for change in the as-cast alloy.The quasicrystal phase is decreased after heat treatment at 550℃for 2 h.Compared with those of the as-cast alloy

the hardness

tensile strength and elongation of the alloy are all improved

especially elongation after heat treatment.