论文标题

热力学脱位理论:应用于BCC-晶体

Thermodynamic dislocation theory: Application to bcc-crystals

论文作者

Le, Khanh Chau, Dang, Sa Ly, Luu, Hoang Thien, Gunkelmann, Nina

论文摘要

本文介绍了热力学脱位理论,该理论包含对其第一个版本的几种修改,该版本最初是由Langer,Bouchbinder和Lookman(2010)提出的。使用大规模最小二乘分析标识的一小部分基于物理的材料参数,我们表明该理论可以在广泛的温度和应变速率上符合BCC晶体Niobium,Tantalum,Tantalum,Tungsten和Vanadium的应力应变曲线。

This paper presents the thermodynamic dislocation theory containing several modifications over its first version which was originally proposed by Langer, Bouchbinder, and Lookman (2010). Employing a small set of physics-based material parameters identified by the large scale least squares analysis, we show that the theory can fit the stress-strain curves of bcc crystals niobium, tantalum, tungsten, and vanadium over a wide range of temperatures and strain rates.

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