论文标题

建模物体中心立方体固体溶液难治性高熵合金的新方法

New approach to model the yield strength of body centered cubic solid solution refractory high entropy alloys

论文作者

Shafiei, Ali

论文摘要

一种简单的拟合方法用于建模Al-HF-NB-NB-MO-TA-TI-V-ZR系统中的人体中心立方体(BCC)固体溶液高熵合金的压缩屈服强度。有人提出,可以通过多项式对屈服强度进行建模,其中实验数据可用于查找多项式系数。结果表明,所提出的多项式可以对实心溶液合金的屈服强度相对良好地建模。开发的多项式用于预测HF-MO-NB-TA-TI-V-ZR系统中RHEA的强度。据观察,该系统中合金的屈服强度随着MO和ZR的添加而增加,并且随着Ti的添加而降低。此外,该模型预测,屈服强度随着参数价电子浓度(VEC)和原子大小差异(ASD)的增加而增加。尽管开发的多项式不考虑合金加强所涉及的机制,但可以将其视为评估固定溶液rheas强度的直接方法。

A simple fitting approach is used for modeling the compressive yield strength of body centered cubic (bcc) solid solution high entropy alloys in Al-Hf-Nb-Mo-Ta-Ti-V-Zr system. It is proposed that the yield strength could be modeled by a polynomial where the experimental data can be used for finding the polynomial coefficients. The results show that the proposed polynomial could model the yield strength of solid solution alloys relatively well. The developed polynomial is used for predicting the strength of RHEAs in Hf-Mo-Nb-Ta-Ti-V-Zr system. It is observed that the yield strength of alloys within this system increases with the additions of Mo and Zr and decreases with the addition of Ti. Furthermore, the model predicts that the yield strength increases with increasing the value of parameters valence electron concentration (VEC) and atomic size difference (ASD). Although the developed polynomial does not consider the mechanisms involved in the strengthening of alloys, it can be considered as a straightforward method for assessing the strength of solid solution RHEAs.

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