Achieving exceptionally high superplasticity at high strain rates in a micrograined Al-Mg-Sc alloy produced by friction stir processing
Achieving exceptionally high superplasticity at high strain rates in a micrograined Al-Mg-Sc alloy produced by friction stir processing
复制标题
通过搅拌摩擦加工生产的微晶 Al-Mg-Sc 合金在高应变率下实现极高的超塑性
DOI：
10.1016/j.scriptamat.2008.06.035
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发表时间：
2008-10-01
影响因子：
6
通讯作者：
Ma, Z. Y.
中科院分区：
文献类型：
--
作者：
Liu, F. C.;Ma, Z. Y.
采用搅拌摩擦技术(FSP)对Al-Mg-Sc合金进行挤压处理，获得了2.6um m的细晶组织。在450℃和1×10(-1)S(-1)的高应变速率下，获得了2150%的最大延伸率。尽管等通道转角挤压等其他方法获得的晶粒度要大得多，但在更高的应变速率下，FSP合金仍能获得大致相同的超塑性。(C)2008 Acta Materialia Inc.由爱思唯尔有限公司出版。版权所有。
Friction stir processing (FSP) was applied to extruded Al-Mg-Sc alloy to produce fine-grained microstructure with 2.6 mu m grains. A maximum elongation of 2150% was achieved at 450 degrees C and a high strain rate of 1 x 10(-1) s(-1). Although the grains obtained by FSP were much larger than those by other techniques, such as equal-channel angular pressing, approximately the same superplasticity was achieved at an even higher strain rate in the FSP alloy. (c) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.