Microstructural development during high temperature creep of 9% Cr steel

被引：115
作者：
Orlova, A [1 ]
Bursik, J [1 ]
Kucharova, K [1 ]
Sklenicka, V [1 ]
机构：
[1] Acad Sci Czech Republ, Inst Phys Mat, Brno 61662, Czech Republic
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1998年 / 245卷 / 01期
关键词：
steel type P91; creep; microstructure; subgrain/particle evolution;
D O I：
10.1016/S0921-5093(97)00708-9
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The modified 9% Cr steel Type P91 is one of the materials presently employed in power plant pipework components. The detailed microstructural analysis of a trial melt produced by Vitkovice Steel, Ostrava is reported in the present work. The microstructural evolution during creep at 873 K was investigated by means of transmission electron microscopy and computer image analysis. Two main microstructural elements of tempered martensite ferritic steels, namely subgrains and secondary phase particles, are studied quantitatively. The influence of stress free ageing and the influence of stress under creep conditions on particle coarsening and subgrain growth is determined. (C) 1998 Elsevier Science S.A. All rights reserved.
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页码：39 / 48
页数：10
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