Ti对ZA4-1合金微观组织和力学性能的影响

赵启淞; 史庆南; 起华荣; 王璐; 姜义; 陈亮维

doi:10.15980/j.tzzz.2013.02.021

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Ti对ZA4-1合金微观组织和力学性能的影响
Effects of Ti on Microstructure and Mechanical Properties of ZA4-1 Alloy
2013年33卷第2期页码：192-194
纸质出版日期： 2013 ，
DOI： 10.15980/j.tzzz.2013.02.021

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[1]赵启淞,史庆南,起华荣,王璐,姜义,陈亮维.Ti对ZA4-1合金微观组织和力学性能的影响[J].特种铸造及有色合金,2013,33(02):192-194.

Zhao Qisong, Shi Qingnan, Qi Huarong, et al. Effects of Ti on Microstructure and Mechanical Properties of ZA4-1 Alloy[J]. Special Casting & Nonferrous Alloys, 2013,33(2):192-194.
[1]赵启淞,史庆南,起华荣,王璐,姜义,陈亮维.Ti对ZA4-1合金微观组织和力学性能的影响[J].特种铸造及有色合金,2013,33(02):192-194. DOI： 10.15980/j.tzzz.2013.02.021.

Zhao Qisong, Shi Qingnan, Qi Huarong, et al. Effects of Ti on Microstructure and Mechanical Properties of ZA4-1 Alloy[J]. Special Casting & Nonferrous Alloys, 2013,33(2):192-194. DOI： 10.15980/j.tzzz.2013.02.021.

摘要

用离心铸造在硅橡胶模具中制备ZA4-1合金铸件

借助扫描电镜、金相显微镜和万能试验机研究了不同Ti含量对ZA4-1合金微观组织和力学性能的影响。结果表明

随着Ti含量的增加

晶粒度先减小后增大;当Ti含量为0.08%时

合金组织均匀

晶粒得到明显细化

合金的综合力学性能最好;进一步增加Ti含量达0.2%后

不但没有细化合金晶粒

反而使合金晶粒粗大

晶界有较多的共晶组织析出

且过量的Ti富集在晶界处

形成缺陷

使合金力学性能降低。

Abstract

ZA4-1alloys were prepared in silicone rubber mould by centrifugal casting.Effects of titanium content on microstructures and mechanical properties of ZA4-1alloys were investigated by scanning electron microscopy（SEM）

metallographic microscope and universal testing machine.The results show that with the increase of titanium content

the average grain degrees in the alloys is decreased firstly and then increased.With the titanium content of 0.08%

grain can be refined obviously with uniform distribution

and the comprehensive mechanical properties of the zinc alloy exhibit desirable.Increasing titanium content to 0.2%

the grains are coarse instead of smaller.The comprehensive mechanical properties are deteriorated as a result of precipitation of eutectic phase in grain boundaries and the enrichment of excessive Ti on the grain boundary resulting in defects.