New Types of Superdislocations in Ordered L10 Structure

✍ Scribed by B. A. Gbeenberg

• Publisher: John Wiley and Sons
• Year: 1973
• Tongue: English
• Weight: 481 KB
• Volume: 55
• Category: Article
• ISSN: 0370-1972
• DOI: 10.1002/pssb.2220550105

✦ Synopsis

Abstract

A new type of glissile superdislocations in an ordered L1~0~ structure is proposed. Such superdislocations can arise from known glissile superdislocations with a (2 a/2) 〈110〉 Burgers vector either as a result of their dissociation, or as a result of their interaction with ordinary dislocations. Sessile dislocation configurations are discussed which arise as a result of definite transformations from superdislocations and are barriers hindering the movement of dislocations. Studies were made of specific configurations of dislocation dipoles and nodes in a given alloy, as well as some peculiarities of interaction of superdislocations with domain boundaries.