Low temperature bainitic ferrite: Evidence of carbon super-saturation and tetragonality

被引：109

作者：

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

Jimenez, J. A. ^{[1
]}

Yen, H. -W. ^{[2
,3
,4
]}

Miller, M. K. ^{[5
]}

Morales-Rivas, L. ^{[1
]}

Kuntz, M. ^{[6
]}

Ringer, S. P. ^{[3
,4
]}

Yang, J. -R. ^{[2
]}

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

机构：

[1] CENIM CSIC, Natl Ctr Met Res, Dept Met Phys, E-28040 Madrid, Spain

[2] Natl Taiwan Univ, Dept Mat Sci & Engn, Taipei 10617, Taiwan

[3] Univ Sydney, Australian Ctr Microscopy & Microanal, Sydney, NSW 2006, Australia

[4] Univ Sydney, Sch Aerosp, Mech, Mechatron Engn, Sydney, NSW 2006, Australia

[5] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA

[6] Robert Bosch GmbH, Mat & Proc Engn Met, D-70465 Stuttgart, Germany

来源：

ACTA MATERIALIA | 2015年 / 91卷

基金：

澳大利亚研究理事会;

关键词：

Tetragonal bainitic ferrite; Nanostructured bainite; Atom probe tomography; High resolution transmission electron microscopy; X-ray diffraction; ATOM-PROBE; MARTENSITE; AUSTENITE; MICROSTRUCTURE; TRANSFORMATION; DISLOCATION; EVOLUTION; SILICON; ALLOYS;

D O I：

10.1016/j.actamat.2015.03.018

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Experimental evidence indicates that bainitic ferrite formed by transformation at low temperatures (200-350 degrees C) contains quantities of carbon in solid solution far beyond those expected from para-equilibrium. A change in the conventional symmetry of the bainitic ferrite lattice from cubic to tetragonal explains the abnormal solid solubility detected. This carbon supersaturation was measured by atom probe tomography, and the tetragonality of the bainitic ferrite, was characterized by means of X-ray diffraction analysis and high resolution transmission electron microscopy. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：162 / 173

页数：12

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