超声熔体处理对ZA27合金组织和力学性能的影响

张黎; 陈乐平; 周全

doi:10.15980/j.tzzz.2018.01.021

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超声熔体处理对ZA27合金组织和力学性能的影响
Effects of Ultrasonic Melt Treatment on Solidification Structure and Mechanical Properties of ZA27Alloy
2018年38卷第1期页码：78-81
纸质出版日期： 2018 ，
DOI： 10.15980/j.tzzz.2018.01.021

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[1]张黎,陈乐平,周全.超声熔体处理对ZA27合金组织和力学性能的影响[J].特种铸造及有色合金,2018,38(01):78-81.

Zhang Li, Chen Leping, Zhou Quan. Effects of Ultrasonic Melt Treatment on Solidification Structure and Mechanical Properties of ZA27Alloy[J]. Special Casting & Nonferrous Alloys, 2018,38(1):78-81.
[1]张黎,陈乐平,周全.超声熔体处理对ZA27合金组织和力学性能的影响[J].特种铸造及有色合金,2018,38(01):78-81. DOI： 10.15980/j.tzzz.2018.01.021.

Zhang Li, Chen Leping, Zhou Quan. Effects of Ultrasonic Melt Treatment on Solidification Structure and Mechanical Properties of ZA27Alloy[J]. Special Casting & Nonferrous Alloys, 2018,38(1):78-81. DOI： 10.15980/j.tzzz.2018.01.021.

摘要

研究了不同超声功率（0

00 W）和作用时间（0

0s）对ZA27合金组织和力学性能的影响。结果发现

在520℃熔体保温条件下

随着超声功率或超声作用时间的增加

合金的初生相均先细化后粗化。当超声功率为700 W

处理时间为30s时

合金初生相的细化效果最佳

综合力学性能最好

其抗拉强度和伸长率分别为435.16 MPa和6.11%。断口分析可知

超声熔体处理后ZA27合金断口具有较多的韧窝和撕裂棱

具有脆性断裂和韧性断裂的混合断裂特征。

Abstract

The influences of different ultrasonic power（0

00 W）and treating time（0

0 s）on the solidified structure and mechanical properties of ZA27 alloy were investigated.The results indicate that with the increase of ultrasonic power or treating time

the primary phase in the alloy is refined at first and then coarsened at 520℃

and primary phase exhibits desirable with 700 Wfor 30 s.When the ultrasonic power is 700 W for 30 s

the alloy presents the satisfied comprehensive mechanical properties

where the tensile strength and elongation reach 435.16 MPa and 6.11%.By observing fracture morphology of alloy

it is found that after ultrasonic melt-treatment

the tensile fracture of ZA27 alloy is characterized by brittle fracture in combination with toughness fracture

and many tearing slits and dimples can be observed at the fracture surface.