On measured activation volumes as relevant to ratcheting or cyclic creep

Sebastien Soubielle; Andreas Mortensen

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On measured activation volumes as relevant to ratcheting or cyclic creep

机译：测量与棘轮或周期性蠕变有关的激活量

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We consider a material having a constant true activation volume and estimate the apparent activation volume that it displays in cyclic creep or ratcheting. We show that cyclic stresses have an effect on the measured value, and that this can be accounted for in data interpretation.

机译：我们认为材料具有恒定的真实激活体积，并估计它在循环蠕变或棘轮中显示的表观激活体积。我们表明，循环应力对测量值有影响，这可以在数据解释中说明。

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《Scripta materialia》 |2011年第9期|共4页
作者
Sebastien Soubielle; Andreas Mortensen;
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原文格式 PDF
正文语种 eng
中图分类冶金工业;
关键词
Metal and alloys; aluminium; Mechanical properties: thermally activated processes; relaxation; strain-rate; Dislocation: dislocation mobility; Ratcheting;

机译：金属和合金;铝;机械性能：热活化过程;松弛;应变率;位错：位错迁移率;棘齿;

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3. Analysis of cyclic creep and rupture. Part 2: calculation of cyclic reference stresses and ratcheting interaction diagrams [J] . P. Carter International Journal of Pressure Vessels and Piping . 2005,第1期

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7. Creep ratchetting of structures due to cyclic thermal loading. [O] . Jakeman, R. R. 1984

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8. Prediction and Verification of Creep Behavior in Metallic Materials and Components for the Space Shuttle Thermal Protection System. Volume 2: Phase 2 Subsize Panel Cyclic Creep Predictions [R] . Cramer, B. A., Davis, J. W. 1975

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On measured activation volumes as relevant to ratcheting or cyclic creep

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