Effect of the long periodic stacking structure and W-phase on the microstructures and mechanical properties of the Mg-8Gd-xZn-0.4Zr alloys
作者： Ke Liu , Jinghuai Zhang , Huayi Lu , Dingxiang Tang , L.L. Rokhlin
DOI: 10.1016/J.MATDES.2009.06.030
关键词: Materials science 、 Stacking 、 Volume fraction 、 Microstructure 、 Elongation 、 Phase (matter) 、 Alloy 、 Fracture (geology) 、 Dynamic recrystallization 、 Metallurgy 、 Composite material
摘要: Microstructures and mechanical properties of the Mg-8Gd-xZn-0.4Zr (x = 0, 1 3 wt.%) alloys, in as-cast condition as-extruded condition, have been investigated. The results show that both 14H long periodic stacking structure W-phase coexist together cast Zn-containing alloys. volume fraction increases with increasing addition Zn. This phase is crack source fracture. 6H observed extruded Mg-8Gd-1Zn-0.4Zr alloy exhibits highest elongation, value its elongation 130% at 300 degrees C due to refined microstructure. plays an important role improving via pinning movement grains elevated temperature. (C) 2009 Elsevier Ltd. All rights reserved.
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