Temperature dependence of carbon supersaturation of ferrite in bainitic steels

SCRIPTA MATERIALIA

卷:67

Article

Caballero, F. G.¹  Miller, M. K.²  Garcia-Mateo, C.¹  Cornide, J.¹  Santofimia, M. J.³ 

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

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

[3] Delft Univ Technol, Dept Mat Sci & Engn, NL-2628 CD Delft, Netherlands

关键词: Steels;    Bainite;    Solid state phase transformation;    Atom probe tomography (APT);   

DOI  :  10.1016/j.scriptamat.2012.08.007

来源: Elsevier

【 摘 要 】

The carbon supersaturation of bainitic ferrite was investigated by means of atom probe tomography in three steels with different carbon and silicon contents, to elucidate the effect of transformation temperature and the reaction velocity on the mechanisms controlling bainite formation with and without the interference of cementite precipitation. Results indicated no difference in the growth mechanism over the temperature range investigated. These results provide new evidence that the bainite transformation is essentially martensitic in nature. (c) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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