Effect of Ultrasonic on Microstructure and Mechanical Properties of Mg-Zn-Y Alloy Reinforced by Quasicrystals

Zhou Wei; Deng Peng; Hu Penghe; Zhang Yunbo; Zhang Lei

doi:10.15980/j.tzzz.2016.10.025

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Effect of Ultrasonic on Microstructure and Mechanical Properties of Mg-Zn-Y Alloy Reinforced by Quasicrystals
Vol. 36, Issue 10, Pages: 1096-1099(2016)
Published： 2016 ，
DOI： 10.15980/j.tzzz.2016.10.025

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[1]周维,邓鹏,胡鹏鹤,张云波,张磊.超声处理对Mg-Zn-Y合金组织和性能的影响[J].特种铸造及有色合金,2016,36(10):1096-1099.

Zhou Wei, Deng Peng, Hu Penghe, et al. Effect of Ultrasonic on Microstructure and Mechanical Properties of Mg-Zn-Y Alloy Reinforced by Quasicrystals. [J]. Special Casting & Nonferrous Alloys 36(10):1096-1099(2016)
[1]周维,邓鹏,胡鹏鹤,张云波,张磊.超声处理对Mg-Zn-Y合金组织和性能的影响[J].特种铸造及有色合金,2016,36(10):1096-1099. DOI： 10.15980/j.tzzz.2016.10.025.

Zhou Wei, Deng Peng, Hu Penghe, et al. Effect of Ultrasonic on Microstructure and Mechanical Properties of Mg-Zn-Y Alloy Reinforced by Quasicrystals. [J]. Special Casting & Nonferrous Alloys 36(10):1096-1099(2016) DOI： 10.15980/j.tzzz.2016.10.025.

摘要

在Mg

Y合金凝固过程中施加超声处理

主要研究超声功率对合金铸态组织和力学性能的影响。结果表明

超声处理对Mg

Y合金铸态组织中的初生α-Mg和准晶相均具有显著的细化效果。随着超声功率增加

其细化效果逐渐加强

初生α-Mg相的形貌由粗大树枝晶状转变为细小花瓣状

准晶相由粗大的连续网络状转变为细小的孤岛状和颗粒状。当超声功率为600W时

合金的抗拉强度和伸长率分别达到215MPa和3.1%。相比未处理的合金

分别提升了51%和182%

表现出较好的综合力学性能。

Abstract

The effects of ultrasonic power on microstructure and mechanical properties of the Mg

Y alloy were investigated.The results show that the primaryα-Mg and icosahedral phase（I-phase）in the Mg

Y alloy can be refined by ultrasonic treatment.With increasing in ultrasonic power

the primaryα-Mg and I-phase are further refined.The morphology of primaryα-Mg is modified from developed dendrite to fine rosette structure.Moreover

the morphology of I-phase is transformed from continuous bulk skeletal structure to almost discontinuous net shape and particle.The tensile strength and elongation of Mg

Y alloy treated by ultrasonic treatment at 600 Wreach 215MPa and 3.1%

which are increased by 51%and 182%

respectively

compared with those of the alloy without ultrasonic treatment.