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Further Analysis of Dynamic Strain Aging in Context of an Internal State Variable Constitutive Formalism
Metallurgical and Materials Transactions A ( IF 2.2 ) Pub Date : 2019-12-17 , DOI: 10.1007/s11661-019-05591-5
Paul S. Follansbee

Observations and analyses of dynamic strain aging in several metals are revisited. Common experimental trends are reviewed. A model of transport of solutes to a dislocation core is presented and predictions of the model are compared to experimental observations. A key element of the analysis is the influence of strain aging on the rate of structure evolution. The evidence presented here, based on strain-rate change measurements performed by Mulford and Kocks in Inconel 600, is that indeed the predominant effect of strain aging is to influence the rate of structure evolution. Estimates are presented for the rate of structure evolution and the extent of transport of solutes to the dislocation core in Inconel 600. While intriguing trends in hardening are observed, no fundamental insight is presented for the mechanism that contributes to the increased rate of structure evolution during strain aging.

中文翻译:

内部状态变量本构形式主义背景下动态应变时效的进一步分析

考察和分析了几种金属的动态应变时效。回顾了常见的实验趋势。提出了溶质向位错核传输的模型,并将该模型的预测结果与实验观察结果进行了比较。分析的关键因素是应变时效对结构演化速率的影响。根据Mulford和Kocks在Inconel 600中进行的应变率变化测量,此处提供的证据表明,应变时效的主要影响确实是影响结构演化的速度。提出了Inconel 600中结构演化速率和溶质向位错核的迁移程度的估计值。虽然观察到了有趣的硬化趋势,
更新日期:2019-12-18
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