Anisotropy of the extruded and heat-treated Li containing AZ31 magnesium alloys
Anisotropy of the extruded and heat-treated Li containing AZ31 magnesium alloys
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挤压热处理含锂AZ31镁合金的各向异性
DOI：
10.1016/j.jallcom.2013.12.069
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发表时间：
2014-03
影响因子：
6.2
通讯作者：
Yang, Qingshan
中科院分区：
文献类型：
--
作者：
Pan, Fusheng;Jiang, Bin;Dai, Jiahong;Yang, Qingshan
在AZ31镁合金中添加锂后，在653 K下以25和81的挤压比挤压合金，并对挤压比为81的挤压坯进行723 K、960 min的热处理。研究了其微观组织演变和力学行为。结果表明，铸态合金具有轻微的屈服不对称性，压拉屈服比为0.925。挤压合金的屈服强度由滑移系决定，并在很大程度上受移动的基面的影响。在某一方向上具有低Schmid因子的棱柱形平面导致该方向上的极限拉伸强度较高。研究还表明，晶粒尺寸和织构峰值都不是决定各向异性的关键因素，而织构类型是决定各向异性的关键因素。
After lithium was added to AZ31 magnesium alloy, the alloy was extruded at 653 K with extrusion ratios of 25 and 81, and heat treatment of 723 K for up to 960 min was conducted to extruded billets with the extrusion ratio of 81. The microstructural evolution and mechanical behaviors were investigated. The results indicated that the as-cast alloy was lightly yield asymmetry with a compressive-to-tensile yield ratio of 0.925. The yield strength of the extruded alloys was determined by prismatic slip systems and largely affected by mobile basal planes. Prismatic planes with low Schmid factors in a certain direction led to a higher ultimate tensile strength in the direction. It was also presented that neither the grain size nor the peak texture value, but the style of the texture was the critical factor to determine the anisotropy.
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DOI：
10.1016/j.msea.2010.10.033
发表时间：
2011-01
影响因子：
6.4
作者：
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通讯作者：
S. M. Fatemi-Varzaneh;A. Zarei‐Hanzaki
影响因子：
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影响因子：
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通讯作者：
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影响因子：
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