Influence of strain rate on the precipitate microstructure in impacted aluminum alloy

被引：45

作者：

Gao, Zhiguo ^{[1
]}

Zhang, Xinming ^{[1
]}

Chen, Ming an ^{[1
]}

机构：

[1] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China

来源：

SCRIPTA MATERIALIA | 2008年 / 59卷 / 09期

关键词：

Aluminum alloy; Impact test; Microstructure;

D O I：

10.1016/j.scriptamat.2008.06.056

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The influence of high strain rate on the precipitate microstructure in impacted aluminum alloy was revealed by transmission electron microscopy. The estimated aspect ratio and the area fraction of theta' precipitate in impacted aluminum alloy specimens were not dramatically changed until impact testing at 5730 s(-1) or higher at ambient temperature although the hardness of specimens impacted at 667-7050 s(-1) was decreased. High strain rates are thus a simple way to lower the transformation temperature of theta' phase in impacted aluminum alloy. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：983 / 986

页数：4

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