Carbon diffusivity and kinetics of spinodal decomposition of martensite in a model Fe-Ni-C alloy

被引：16
作者：
Maugis, P. [1 ]
Danoix, F. [2 ]
Dumont, M. [1 ]
Curelea, S. [3 ]
Cazottes, S. [3 ]
Zapolsky, H. [2 ]
Goune, M. [4 ]
机构：
[1] Aix Marseille Univ, Univ Toulon, CNRS, IM2NP, Marseille, France
[2] Normandie Univ, UNIROUEN, INSA Rouen, CNRS,Grp Phys Mat, Rouen, France
[3] Univ Lyon, INSA Lyon, MATEIS CNRS, Lyon, France
[4] ICMCB CNRS, Pessac, France
来源：
MATERIALS LETTERS | 2018年 / 214卷
关键词：
Steels; Carbon diffusion; Spinodal decomposition; Martensite; Atom probe tomography; SYSTEM; ENERGY;
D O I：
10.1016/j.matlet.2017.12.007
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
From direct observations and measurements at the atomic scale by atom probe tomography coupled with calculations using a mean-field approach, the kinetics of low temperature carbon redistribution in martensite of a Fe-Ni-C alloy was investigated for duration up to 4.5 years. The results suggest that the ordered phase alpha ''-Fe16C2 forms via a spinodal decomposition mechanism, in the range of a few days at room-temperature. The approach proposed allows us to retrieve the diffusivity of carbon in a large composition range during decomposition kinetics of martensite into alpha-Fe and alpha ''-Fe16C2. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：213 / 216
页数：4
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