ISIJ International
Online ISSN : 1347-5460
Print ISSN : 0915-1559
ISSN-L : 0915-1559
Regular Article
<110> Dislocation Junction Formation via the Coalescence between Nanoscale 1/2<111> Prismatic Dislocation Loops in Iron
Kazuto ArakawaTakafumi AminoHidehiro YasudaHirotaro Mori
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2017 Volume 57 Issue 11 Pages 2065-2069

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Abstract

Accurate knowledge of dislocation reactions is crucial for understanding and controlling the macroscopic mechanical properties of α-iron and its alloys. A dislocation reaction: 1/2[111]+1/2[111]→[110] has never been observed. However, using in-situ transmission electron microscopy, we demonstrate that the two nanoscale 1/2<111> prismatic dislocation loops that undergo 1D glide motion approach and collide with each other to form a “high-energy” [110]-dislocation junction. This anomalous reaction cannot be understood within the framework of the elasticity.

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© 2017 by The Iron and Steel Institute of Japan
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