A mechanism of plane matching boundary-assisted α/γ phase transformation in Fe–Cr alloy based on in-situ observations-Reference-Cited by-同舟云学术

A mechanism of plane matching boundary-assisted α/γ phase transformation in Fe–Cr alloy based on in-situ observations

Published:2005-10-01 Issue:10 Volume:96 Page:1196-1203
ISSN:2195-8556
Container-title:International Journal of Materials Research
language:en
Short-container-title:

Author:

Watanabe Tadao¹,Obara Kouichi¹,Tsurekawa Sadahiro¹,Gottstein Günter²

Affiliation:

1. Laboratory of Materials Design and Interface Engineering, Department of Nanomechanics, Graduate School of Engineering, Tohoku University , Sendai , Japan

2. Institut für Metallkunde und Metallphysik (IMM), RWTH , Aachen , Germany

Abstract

Abstract On the basis of in-situ observations of the α/γ phase transformation in an iron-4.2 at.% Cr alloy, it was found that triple junctions with more random boundaries can be preferential sites for nucleation and that a two-stage migration of α/γ interphase boundaries can occur with highly different velocities, i. e. of 0.23 ~ 0.43 μm/sec for the α/γ two phase temperature region and 2.6 ~ 44 μm/sec for the c single phase region. The origin of the observed high migration velocities of α/c interphase boundaries and the generalized K-S orientation relationship between a new phase and the matrix are discussed on the basis of a possible role of {111}γ//{110}α plane matching interphase boundaries in the α/γ phase transformation.

Publisher

Walter de Gruyter GmbH

Subject

Materials Chemistry,Metals and Alloys,Physical and Theoretical Chemistry,Condensed Matter Physics

Link

https://www.degruyter.com/document/doi/10.1515/ijmr-2005-0206/pdf

Reference42 articles.

1. F. Haessner (Ed.): Recrystallization of Metallic Materials, Dr. Riederer-Verlag, Stuttgart (1978).

2. J.W. Christian: The Theory of Transformations in Metals and Alloys, Pergamon Press (1965) Oxford.

3. H.I. Aaronson (Ed.): Phase Transformations, ASM. (1970) Metals Park, Ohio.

4. H. Margolin (Ed.): Recrystallization, Grain Growth and Textures, ASM. (1966).

5. G. Gottstein, D.A. Molodov (Eds.): Recrystallization and Grain Growth, Springer (2001).