超声处理对AS31镁合金组织及性能的影响

廖露亮; 尧军平; 张磊; 宋苏

doi:10.15980/j.tzzz.2017.10.029

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超声处理对AS31镁合金组织及性能的影响
Effects of Ultrasonic Treatment on Solidification Structure and Mechanical Properties of AS31 Magnesium Alloy
2017年37卷第10期页码：1150-1153
纸质出版日期： 2017 ，
DOI： 10.15980/j.tzzz.2017.10.029

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[1]廖露亮,尧军平,张磊,宋苏.超声处理对AS31镁合金组织及性能的影响[J].特种铸造及有色合金,2017,37(10):1150-1153.

Liao Luliang, Yao Junping, Zhang Lei, et al. Effects of Ultrasonic Treatment on Solidification Structure and Mechanical Properties of AS31 Magnesium Alloy[J]. Special Casting & Nonferrous Alloys, 2017,37(10):1150-1153.
[1]廖露亮,尧军平,张磊,宋苏.超声处理对AS31镁合金组织及性能的影响[J].特种铸造及有色合金,2017,37(10):1150-1153. DOI： 10.15980/j.tzzz.2017.10.029.

Liao Luliang, Yao Junping, Zhang Lei, et al. Effects of Ultrasonic Treatment on Solidification Structure and Mechanical Properties of AS31 Magnesium Alloy[J]. Special Casting & Nonferrous Alloys, 2017,37(10):1150-1153. DOI： 10.15980/j.tzzz.2017.10.029.

摘要

研究了超声处理对AS31镁合金凝固组织和力学性能的影响

并对其作用机理进行了探讨。结果表明

随着超声功率增加

AS31镁合金的晶粒尺寸显著细化

组织中共晶Mg2Si相形貌、尺寸和分布明显得到改善。当施加超声功率为750 W时

共晶Mg2Si相由粗大汉字状转变为短棒状

其平均尺寸由未施加超声时的160μm减少到50μm。另外其抗拉强度和伸长率分别为203 MPa和3.4%

比未超声合金分别提高了25%和100%

分析其断口发现

未经超声处理的AS31镁合金表现为解理断裂

经过超声处理的AS31镁合金表现为韧窝断裂。

Abstract

Effects of ultrasonic treatment on the solidification and mechanical properties of AS31 magnesium alloy were investigated

and its mechanism was described.The results reveal that with the increase of ultrasonic power

the grain size of AS31 magnesium alloy is refined obviously

and the morphology

size and distribution of eutectic Mg

Si in the microstructure of the alloy are improved greatly.With the ultrasonic power of 750 W

the eutectic Mg

Si phase in the alloy is changed from coarse Chinese script to short rod ones.The average size is reduced from 160μm to 50μm.Meanwhile

the strength and elongation of the alloy reach up to 203 MPa and 3.4%

compared with those of the non-ultrasonic treatment alloy

increased by 25% and 100%

respectively.The fracture analysis of AS31 magnesium alloy without ultrasonic treatment presents cleavage fracture

while the ultrasonic treatment AS31 magnesium alloy presents dimple fracture.

关键词

AS31镁合金超声处理共晶Mg2Si力学性能

Keywords

AS31 Magnesium AlloyUltrasonic TreatmentEutectic Mg2SiMechanical Properties

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