Research on the precipitation strengthening of particle with a new shape model in magnesium alloys
Research on the precipitation strengthening of particle with a new shape model in magnesium alloys
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DOI：
10.1016/j.msea.2015.07.013
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发表时间：
2015-08
期刊：
影响因子：
6.4
通讯作者：
Wei Sun;Chuming Liu;Yang Gao;Zhongwei Chen;Xiuzhu Han
中科院分区：
文献类型：
--
作者：
Wei Sun;Chuming Liu;Yang Gao;Zhongwei Chen;Xiuzhu Han
基于本工作中新的长方体析出物模型，研究了镁合金中强度对析出物形状和取向的定量依赖性。计算表明，长方体模型比圆柱模型更全面、更适合估计析出物的强化响应。与基体析出物相比，棱柱状析出物和{0001}棒更有利于合金强化。此外，{10 1 ̅ 0}棱柱板状颗粒的强化响应与{1 2 ̅ 10}棱柱颗粒的强化响应不同。当考虑析出物尺寸变化的影响时，较长的基底棒状析出物预计将提供更高的强度增量。
The quantitative dependence of strength on the shape and orientation of precipitates in magnesium alloys was investigated based on a new cuboid-shaped precipitate model in the present work. Calculations suggest the cuboid model is more comprehensive and appropriate for estimating the strengthening response of precipitate than the cylindrical model. Compared with the basal precipitates, the prismatic precipitates and {0001} rods are more beneficial for alloy strengthening. Moreover, the strengthening response of {10 1 ̅ 0} prismatic plate-shaped particle is different from that of {1 2 ̅ 10} prismatic particle. The longer basal rod-shaped precipitate is expected to provide higher strength increment when considering the effect of precipitate dimension variation.