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

页码：213 / 216

页数：4

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