Stability of nanoscale secondary phases in an oxide dispersion strengthened Fe-12Cr alloy

被引：87

作者：

de Castro, V. ^{[1
]}

Marquis, E. A. ^{[1
]}

Lozano-Perez, S. ^{[1
]}

Pareja, R. ^{[2
]}

Jenkins, M. L. ^{[1
]}

机构：

[1] Univ Oxford, Dept Mat, Oxford OX1 3PH, England

[2] Univ Carlos III Madrid, Dept Fis, Madrid 28911, Spain

来源：

ACTA MATERIALIA | 2011年 / 59卷 / 10期

基金：

英国工程与自然科学研究理事会;

关键词：

ODS ferritic steel; Nanoparticles; Transmission electron microscopy; Atom-probe tomography; ATOM-PROBE TOMOGRAPHY; ODS-EUROFER; CRYSTAL-STRUCTURE; FERRITIC ALLOYS; STEEL; PARTICLES; NANOPARTICLES; BEHAVIOR; BLANKET; TEM;

D O I：

10.1016/j.actamat.2011.03.017

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Transmission electron microscopy and atom-probe tomography were used to characterize on a near-atomic scale the microstructure and oxide and carbide phases that form during thermo-mechanical treatments of a model oxide dispersion strengthened Fe-12 wt.% Cr-0.4 wt.% Y(2)O(3) alloy. It was found that some of the Y-rich nanoparticles retained their initial crystallographic structure but developed a Cr-enriched shell, while others evolved into ternary oxide phases during the initial processing. The Y- and Cr-rich oxide phases formed remained stable after annealing at 1023 K for 96 h. However, the number of Cr-rich carbides appeared to increase, inducing Cr depletion in the matrix. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：3927 / 3936

页数：10

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