AN IN-SITU STUDY OF PRISMATIC GLIDE IN ALPHA-TITANIUM AT LOW-TEMPERATURES

被引：90

作者：

FARENC, S

CAILLARD, D

COURET, A

机构：

[1] CEMES-LOE, CNRS, 31055 Toulouse Cedex, 29, Rue J. Marvig

来源：

ACTA METALLURGICA ET MATERIALIA | 1993年 / 41卷 / 09期

关键词：

D O I：

10.1016/0956-7151(93)90139-J

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In situ experiments have been performed in two titanium ingots with different purities in a view to studying the glide mechanism of a dislocations in prismatic planes between 100 and 300 K. The observation of the jerky movement of rectilinear screw dislocations leads to the conclusion that the strain rate is controlled by the locking-unlocking mechanism. Local stress measurements reproduce well the variation of the macroscopic CRSS with temperature. The stress dependence of the locking-unlocking mechanism and the core structure of dislocations are discussed.

引用

页码：2701 / 2709

页数：9

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