Experimental study of macro–micro dynamic behaviors of 5A0X aluminum alloys in high velocity deformation
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影响因子：6.1
DOI码：10.1016/j.msea.2013.12.001
所属单位：Northwestern Polytechnical University
发表刊物：Materials Science and Engineering A
关键字：Aluminum alloys Constitutivebehavior Microstructureevolution High velocitydeformation
摘要：Investigation of macro–micro dynamic mechanical behavior of aluminum alloys is crucial to understand and model high velocity forming processes, e.g. the electromagnetic forming. Therefore, this work presents the experimental investigation of the macro–micro dynamic deformation behavior and related mechanisms of 5A0X alloys. With increasing strain rate, notable hardening and serrated flow curves are observed for both 5A06 and 5A02 alloys; the flow softening ratio increases from 10.59% to 15.56% for 5A06 alloy, while increasing up to 34.55% at a strain rate of 3000 s−1 for 5A02 alloy. High velocity deformation enhances the ductility of both the alloys via slowing down the neck development rather than suspending the onset of necking. Comparative study in dynamic tensile/compressive behavior of 5A06 alloy indicates a similar hardening rule in these two loading conditions, however, more obvious softening is found in tension than that in compression. The difference can be attributed to the different microstructure-related characteristics, namely, the diffuse necking related to void evolution in tension and the adiabatic shear bands (ASB) in compression. In addition, a mathematical model is used in this work to corroborate the occurrence of ASBs and to predict the half width of ASBs, which is proved reliable by experiments.
合写作者：G.Y. Ren
第一作者：S.L. Yan
论文类型：期刊论文
通讯作者：H. Yang,H.W. Li
学科门类：工学
文献类型：J
卷号：598
页面范围：197–206
是否译文：否
发表时间：2014-03-26
收录刊物：SCI、EI
发布期刊链接：https://www.sciencedirect.com/science/article/pii/S0921509313013506?via%3Dihub
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