Superplasticity and load relaxation behavior of extruded Mg–8Sn–3Al–1Zn alloy at 250 °C
Superplasticity and load relaxation behavior of extruded Mg–8Sn–3Al–1Zn alloy at 250 °C
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DOI：
10.1016/j.msea.2016.01.014
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发表时间：
2016-02
期刊：
影响因子：
6.4
通讯作者：
B. Kim;J. G. Lee;S. Park
中科院分区：
文献类型：
--
作者：
B. Kim;J. G. Lee;S. Park
研究了挤压态Mg-8 Sn-3Al-1 Zn合金在250 °C下的拉伸性能和载荷松弛行为。在合金中观察到超塑性，在5×10-4-5×10 - 3s-1的应变速率范围内，拉伸伸长率为450-1050%。在250 °C下的载荷松弛结果表明，晶界滑动是合金的超塑性性能的原因，即使它不作为主要的操作变形机制。
The tensile properties and load relaxation behavior of extruded Mg–8Sn–3Al–1Zn alloy at 250 °C were investigated. Superplasticity was observed in the alloy, which exhibited tensile elongations of 450–1050% at strain rates in the range of 5×10-4–5×10−3s−1. Load relaxation results at 250 °C indicated that grain boundary sliding is responsible for the superplastic properties of the alloy, even though it does not act as a primarily operating deformation mechanism.