Effects of Power Ultrasonic on Microstructure and Wear Resistance of ZA27 Alloy

Guo Wentao~1; Li Junwen~1; Chang Guowei~1

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Effects of Power Ultrasonic on Microstructure and Wear Resistance of ZA27 Alloy
Vol. 31, Issue 11, Pages: 1074-1076(2011)
Published： 2011 ，
DOI：

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[1]郭文涛,李军文,常国威.功率超声对ZA27合金显微组织与耐磨性的影响[J].特种铸造及有色合金,2011,31(11):1074-1076.

Guo Wentao~1, Li Junwen~1, Chang Guowei~1. Effects of Power Ultrasonic on Microstructure and Wear Resistance of ZA27 Alloy. [J]. Special Casting & Nonferrous Alloys 31(11):1074-1076(2011)
[1]郭文涛,李军文,常国威.功率超声对ZA27合金显微组织与耐磨性的影响[J].特种铸造及有色合金,2011,31(11):1074-1076. DOI：

Guo Wentao~1, Li Junwen~1, Chang Guowei~1. Effects of Power Ultrasonic on Microstructure and Wear Resistance of ZA27 Alloy. [J]. Special Casting & Nonferrous Alloys 31(11):1074-1076(2011) DOI：

摘要

在500℃熔体保温条件下对工业用ZA27合金进行超声波振动处理

发现经超声处理后ZA27合金由均匀细小的等轴晶组织组成。随功率的增加平均晶粒尺寸由70μm减小到40μm

磨损量由5.6mg减小到1.3mg。结果表明

声流搅拌和空化作用能够细化ZA27合金的显微组织

使η+β相均匀分布在α相晶界处。超声波能够提高ZA27合金的耐磨性

最佳施加功率为1500W。

Abstract

Commercial ZA27 alloy was treated by ultrasonic vibration treatment at 500 ℃.The results show that microstructure of ultrasonic treated ZA27 alloy is composed of uniform and fine equiaxed grain.With increasing in power

average grain size is decreased from 70μm to 40μm

and weight loss is decreased from 5.6 mg to 1.3 mg.Acoustic stream effects and cavitation effects can greatly refine the microstructure of ZA27 alloy

and make η+β phase to uniformly distribute along α grain boundary.Meanwhile

wear resistance of the ZA27 alloy can be improved obviously by power ultrasonic treatment.The optimized treating power is 1 500 W.