Effect of Ni, Mo and Mn content on spinodal decomposition kinetics and G-phase precipitation of aged model cast austenitic stainless steels

被引：18

作者：

Badyka, R. ^{[1
,2
,3
]}

Saillet, S. ^{[3
]}

Emo, J. ^{[1
,2
]}

Domain, C. ^{[3
]}

Pareige, C. ^{[1
,2
]}

机构：

[1] Univ Rouen Normandie, CNRS, Grp Phys Mat, UMR 6634, Ave Univ, F-76801 St Etienne Du Rouvray, France

[2] INSA Rouen Normandie, Ave Univ, F-76801 St Etienne Du Rouvray, France

[3] EDF Lab Renardieres, MMC Dept, F-77250 Moret Sur Loing, France

来源：

JOURNAL OF NUCLEAR MATERIALS | 2021年 / 555卷

关键词：

Kinetics; Atom probe tomography; Spinodal decomposition; G-phase precipitation; Models alloys; ATOM-PROBE TOMOGRAPHY; FE-CR; 475-DEGREES-C EMBRITTLEMENT; DUPLEX; FERRITE; CF8; QUANTIFICATION; TEMPERATURE; OVERLAPS; ALLOYS;

D O I：

10.1016/j.jnucmat.2021.153123

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

During ageing, the ferritic phase of Cast Austenitic Stainless Steels (CASS) undergoes decomposition by spinodal decomposition and G-phase precipitation, which leads to increasing hardness and decreasing impact toughness. Mo-bearing steels are more prone to ageing than Mo-free steels. To study the effects of Ni, Mo, and Mn, duplex model alloys were thermally aged at 350 degrees C and 400 degrees C. The microstructure evolution during ageing was characterized by atom probe tomography. Only Ni additions seem to affect the spinodal decomposition kinetics. Ni accelerates the spinodal decomposition kinetics regardless of the presence of Mo or Mn. Additions of Mo and Mn promote the precipitation of G-phase. (c) 2021 Elsevier B.V. All rights reserved.

引用

页数：11

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