Relaxation path of nanoparticles in an oxygen-enriched ferritic oxide-dispersion-strengthened alloy

被引：10

作者：

Thual, M. A. ^{[1
]}

Ribis, J. ^{[2
]}

Baudin, T. ^{[3
]}

Klosek, V. ^{[1
]}

de Carlan, Y. ^{[2
]}

Mathon, M. H. ^{[1
]}

机构：

[1] Univ Paris Saclay, CEA Saclay, CNRS, LLB,CEA, F-91191 Gif Sur Yvette, France

[2] Univ Paris Saclay, CEA, DEN Serv Rech Met Appl, F-91191 Gif Sur Yvette, France

[3] Univ Paris Saclay, Univ Paris Sud, UMR CNRS 8182, ICMMO,SP2M, F-91405 Orsay, France

来源：

SCRIPTA MATERIALIA | 2017年 / 136卷

关键词：

ODS alloys; Mechanical alloying; Nanoparticles; High Resolution TEM; Phase relaxation; ODS ALLOYS; MECHANICAL-PROPERTIES; ELECTRON-MICROSCOPY; STEELS; PARTICLES; STABILITY; PHASES; CR; MICROSTRUCTURE; NANOCLUSTERS;

D O I：

10.1016/j.scriptamat.2017.04.014

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Excellent mechanical properties of oxide-dispersion-strengthened (ODS) alloys arise from a high density of Y-Ti nano-oxides finely dispersed in the matrix. Characteristics of this precipitation can strongly be influenced by oxygen contamination during milling. We studied an as-received and annealed (1 h 1150 degrees C) oxygen-enriched ferritic ODS alloy by High Resolution Transmission Electron Microscopy. The as-received sample has unknown b.c.c nano-oxides, while the annealed one has orthorhombic nanoparticles. We propose a phase relaxation during the annealing, confirmed by the observation of a particle where both cubic and orthorhombic structures coexist. The influence of oxygen on the particle structure is also discussed. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：37 / 40

页数：4

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