Interface Characteristics of Compound Casting ZL105/AZ91D Alloy

Zhao Chengzhi; Zhang Hexin; Wang Qiang; Ren Quansheng; Yan Tao; Ding Chao

doi:10.15980/j.tzzz.2018.02.008

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Interface Characteristics of Compound Casting ZL105/AZ91D Alloy
Vol. 38, Issue 2, Pages: 143-146(2018)
Published： 2018 ，
DOI： 10.15980/j.tzzz.2018.02.008

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[1]赵成志,张贺新,王强,任全胜,严涛,丁超.ZL105/AZ91D复合铸造界面研究[J].特种铸造及有色合金,2018,38(02):143-146.

Zhao Chengzhi, Zhang Hexin, Wang Qiang, et al. Interface Characteristics of Compound Casting ZL105/AZ91D Alloy. [J]. Special Casting & Nonferrous Alloys 38(2):143-146(2018)
[1]赵成志,张贺新,王强,任全胜,严涛,丁超.ZL105/AZ91D复合铸造界面研究[J].特种铸造及有色合金,2018,38(02):143-146. DOI： 10.15980/j.tzzz.2018.02.008.

Zhao Chengzhi, Zhang Hexin, Wang Qiang, et al. Interface Characteristics of Compound Casting ZL105/AZ91D Alloy. [J]. Special Casting & Nonferrous Alloys 38(2):143-146(2018) DOI： 10.15980/j.tzzz.2018.02.008.

摘要

采用复合铸造工艺制备具有良好冶金结合的ZL105/AZ91D双金属复合材料。将化学浸Zn处理的ZL105铝块放在铸型内整体预热到300℃

AZ91D镁合金在680℃浇注

然后试样在500℃时保温30min。通过金相显微镜和扫描电镜观察发现

保温30min的试样在ZL105与AZ91D的界面处形成宽度为0.6

.9mm的结合区。XRD分析发现

该结合区主要由Mg的固溶体、ɑ-Al固溶体和Mg17Al12相组成

其显微硬度（HV）达到200以上。而相同浇注条件下无保温的试样

在结合区存在缝隙。试验结果表明

在试样浇注后进行保温处理可以促进界面反应

从而实现ZL105合金和AZ91D合金之间良好的冶金结合。

Abstract

ZL105/AZ91 Dbimetal composites with good metallurgical bonding were fabricated by compound casting.After deposited zinc

the ZL105 plate was put into the mould and preheated to 300 ℃

then the fresh liquid AZ91 Dwas poured over it.And then

the sample was held at 500 ℃ for 30 min.OM and SEM results reveal that bonding zone with 0.6

.9 mm in thickness can be formed at interface of ZL205 alloy and AZ91 Dalloy with holding for 30 min.XRD analysis reveals that the bonding zone is composed of solution Mg

α-Al phase and Mg17 Al12.The microhardness of the bonding area reaches over（HV）200.Meanwhile

at the same casting condition

without holding treatment

agap can be observed at the bonding zone.The results show that a metallurgical bonding can be obtained between ZL105 and AZ91 Das a result of holding treatment promoting the interfacial reaction.