Microstructure and Properties of ZM6 Alloy in Pressurized Solidification

Zhu Qianli; Ma Youping; Yang Lei; Liu Ruizhe

doi:10.15980/j.tzzz.2015.05.025

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Microstructure and Properties of ZM6 Alloy in Pressurized Solidification
Vol. 35, Issue 5, Pages: 541-544(2015)
Published： 2015 ，
DOI： 10.15980/j.tzzz.2015.05.025

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[1]朱倩丽,马幼平,杨蕾,刘睿哲.加压凝固ZM6镁合金的组织及性能[J].特种铸造及有色合金,2015,35(05):541-544.

Zhu Qianli, Ma Youping, Yang Lei, et al. Microstructure and Properties of ZM6 Alloy in Pressurized Solidification. [J]. Special Casting & Nonferrous Alloys 35(5):541-544(2015)
[1]朱倩丽,马幼平,杨蕾,刘睿哲.加压凝固ZM6镁合金的组织及性能[J].特种铸造及有色合金,2015,35(05):541-544. DOI： 10.15980/j.tzzz.2015.05.025.

Zhu Qianli, Ma Youping, Yang Lei, et al. Microstructure and Properties of ZM6 Alloy in Pressurized Solidification. [J]. Special Casting & Nonferrous Alloys 35(5):541-544(2015) DOI： 10.15980/j.tzzz.2015.05.025.

摘要

研究了加压条件下镁合金ZM6合金凝固组织变化特征

特别是第二相β-Mg17Al12的生成和演变机制

并进一步研究了其力学性能变化。结果表明

加压可改变合金的凝固速率

进而改变初生相的固溶度

导致β相来不及析出而数量减少;同时加压试样的凝固组织内晶粒有所细化

晶界周围几乎无短棒状第二相析出

且晶界宽度小;拉伸性能和显微硬度有所提高。

Abstract

Solidification microstructure evolution characteristics of magnesium alloy ZM6 under pressurized condition was explored

focusing on formation and evolution mechanism of second phase β-Mg17Al12 in ZM6 alloy.Meanwhile

the mechanical properties of the ZM6 alloy were measured.The results show that pressure can result in the decrease ofβ-phase precipitates through changing solidification rate to affect the solubility of the primary phase.Grain size of pressurized ZM6 was refined

meanwhile

the generation of short rod-likeβ-Mg17Al12 around thinned grain boundary was observed rarely.Tensile properties and micro-hardness of ZM6 were improved after pressurization.