论文标题

塑料流的两个通用定律和一致的热力学错位理论

Two universal laws for plastic flows and the consistent thermodynamic dislocation theory

论文作者

Le, Khanh Chau

论文摘要

本文验证了面部中心晶体的塑料流的两个定律,这些定律在恒定应变速率和固定环境温度下变形。第一定律将稳态流动应力与环境温度和应变速率联系起来。第二定律要求将配置熵提高到稳态下达到的最大值。提供了大规模的最小二乘分析,该分析允许根据这些定律确定基于物理的热力学错位理论参数。

This paper verifies two laws for plastic flows of face-centered cubic crystals that deform at constant strain rates and fixed ambient temperatures. The first law relates steady-state flow stress to ambient temperature and strain rate. The second law requires an increase of configurational entropy towards a maximum reached in the steady state. The large scale least squares analysis is provided which allows the physics-based parameters of thermodynamic dislocation theory to be identified in accordance with these laws.

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