Microstructural evolution in a PH13-8 stainless steel after ageing

被引：176
|
作者：
Guo, Z
Sha, W [1 ]
Vaumousse, D
机构：
[1] Queens Univ Belfast, Sch Civil Engn, Belfast BT7 1NN, Antrim, North Ireland
[2] Univ Oxford, Dept Mat, Oxford OX1 2JD, England
来源：
ACTA MATERIALIA | 2003年 / 51卷 / 01期
基金：
英国工程与自然科学研究理事会;
关键词：
atom probe; microstructure; ageing; precipitation hardening; stainless steels;
D O I：
10.1016/S1359-6454(02)00353-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The precipitation process in a wrought PH13-8 steel during ageing was investigated using a position sensitive atom probe. The precipitates formed are enriched in Ni and Al, and depleted of Fe and Cr, yet the composition is far from the stoichiometric NiAl phase. They may take on different shapes at different temperatures. The hardening effects observed during early stages of ageing should be due to the redistribution of atoms such as Fe, Cr, Ni, and/or Al. Particle coarsening takes place simultaneously with the development of the composition of the NiAl-enriched precipitates. Mo segregation at the precipitate/matrix interface was not found. (C) 2002 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：101 / 116
页数：16
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