Simulation of the yield strength of wire drawn Cu-based in-situ composites
Simulation of the yield strength of wire drawn Cu-based in-situ composites
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DOI：
10.1016/0927-0256(95)00072-0
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发表时间：
1996-02
影响因子：
3.3
通讯作者：
D. Raabe;U. Hangen
中科院分区：
文献类型：
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作者：
D. Raabe;U. Hangen
采用修正的混合线性规则（MROM）对由面心立方（fcc）金属基体（Cu）和5-30 mass%体心立方（bcc）过渡金属（Nb）组成的拉丝原位复合材料的屈服强度进行了建模。这种方法分析描述的复合材料的屈服强度的体积加权平均值的总和的实验观察到的屈服强度的各个纯相和霍尔-佩奇型的贡献所产生的内部边界的影响。后一部分描述的位错堆积在面心立方矩阵和体心立方细丝中的位错运动的激活。
The yield strength of wire drawn in-situ composites consisting of a face centered cubic (fcc) metal matrix (Cu) and 5–30 mass% of a body centered cubic (bcc) transition metal (Nb) is modelled by using a modified linear rule of mixtures (MROM). This approach analytically describes the yield strength of the composite as the sum of the volumetric weighted average of the experimentally observed yield strengths of the individual pure phases and a Hall-Petch type contribution arising from the impact of internal boundaries. The latter portion is described in terms of dislocation pile-ups in the fcc matrix and the activation of dislocation movement in the bcc filaments.