A NEW METHOD FOR ACTIVATION VOLUME MEASUREMENTS - APPLICATION TO NI3(AL,HF)

被引：102

作者：

SPATIG, P

BONNEVILLE, J

MARTIN, JL

机构：

[1] Département de Physique-Institut de Génie Atomique, Ecole Polytechnique Fédérale de Lausanne

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1993年 / 167卷 / 1-2期

关键词：

D O I：

10.1016/0921-5093(93)90339-G

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A new method is presented that allows the measurement of microscopic activation volumes which are typical of thermally activated dislocation processes. It consists of a repeated relaxation test with constant durations, which start at a given stress level. The advantages of this method, as compared to a previous one which uses constant stress drops, are outlined. The new method is successfully applied to the determination of the transition stress between micro- and macro-plastic deformation in the alloy Ni3(Al,Hf) at room temperature.

引用

页码：73 / 79

页数：7

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