HCP Mg-Li合金塑性不稳定性研究

Journal of Metallurgy Pub Date : 2012-01-29 DOI:10.1155/2012/674573

C. Wang, Y. B. Xu, E. Han

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引用次数: 6

摘要

报道了六方密堆积LA41镁合金在拉伸试验中的塑性失稳。与塑性失稳相关的锯齿幅值随应变的增大而增大，随应变速率的增大而减小。提出了动态应变时效(DSA)模型作为控制机理。此外，据报道，退火可以降低流动不稳定性，具有潜在的实际应用价值。

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Investigations on the Plastic Instability in an HCP Mg-Li Alloy

Plastic instability is reported in hexagonal close-packed (HCP) LA41 magnesium alloy during tensile tests. Serration amplitude associated with plastic instability is measured to increase with increasing strain and decrease with increasing strain rate. The model of dynamic strain aging (DSA) is proposed to be the controlling mechanism. Moreover, it is reported that annealing could reduce the flow instability, which has potential practical applications.

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Journal of Metallurgy

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