The role of C and Mn at the austenite/pearlite reaction front during non-steady-state pearlite growth in a Fe-C-Mn steel

SCRIPTA MATERIALIA

卷:104

Article

Aranda, M. M.¹  Rementeria, R.¹  Poplawsky, J.²  Urones-Garrote, E.³  Capdevila, C.¹ 

[1] CENIM CSIC, Mat Res Grp, Madrid 28040, Spain

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

[3] Univ Complutense Madrid, Fac Ciencias Quim, CNME, E-28040 Madrid, Spain

关键词: Divergent pearlite;    Interface diffusion;    Growth rate;    Pearlitic steel;   

DOI  :  10.1016/j.scriptamat.2015.04.005

来源: Elsevier

【 摘 要 】

The role of C and Mn during the growth of pearlite under non-steady state conditions is analyzed by comparing phase compositions of austenite, ferrite and cementite (gamma+alpha+theta) through the use of transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDS), and atom probe tomography (APT) measurements across the austenite/pearlite interface. A local Mn enrichment and C depletion at the austenite/pearlite interface has been measured, which causes a change in the transformation driving force with time during divergent pearlite growth. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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