New experimental evidence of the diffusionless transformation nature of bainite

被引：52

作者：

Caballero, F. G. ^{[1
]}

Miller, M. K. ^{[2
]}

Garcia-Mateo, C. ^{[1
]}

Cornide, J. ^{[1
]}

机构：

[1] Ctr Nacl Invest Met CENIM CSIC, E-28040 Madrid, Spain

[2] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 577卷

关键词：

Nanostructured materials; Phase transformation; Atom probe tomography; MICROSTRUCTURE; STEELS; AUSTENITE; FERRITE;

D O I：

10.1016/j.jallcom.2012.02.130

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Since the discovery of bainite, research over many decades has revealed a substantial amount of information about the mechanism of the bainite transformation in steels. Elements of the theory are now routinely being used in many parts of the world in the design of novel alloys and in the interpretation of a variety of experimental data. However, current experimental and theoretical understanding is limiting technological progress. The purpose of this atom probe tomography study was to track atom distributions during the bainite reaction in a nanocrystalline steel. The results are providing new experimental evidence on subjects critically relevant to the understanding of the atomic mechanisms controlling bainitic ferrite formation, such as the incomplete transformation phenomenon, the carbon supersaturation of ferrite, and the plastic accommodation of the surrounding austenite. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：S626 / S630

页数：5

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