期刊
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
卷 528, 期 22-23, 页码 6764-6768出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2011.05.084
关键词
Reduced activation steels; Phase diagrams; Carbide; Microstructure; Creep
类别
资金
- National Basic Research Program of China [2010CB731600]
- National Natural Science Foundation of China [51071090]
A special intermediate heat treatment was studied in order to obtain dispersed distribution of fine M(23)C(6) carbides in reduced activation steels. The results indicated that MX carbonitrides rather than M(23)C(6) precipitated first in the steel with intermediate heat treatment at 850 degrees C, which led to a decrease of carbon concentration in the supersaturated martensitic matrix and correspondingly a reduced volume fraction from 2.6% to 0.6% and mean size of M(23)C(6) from 150 nm to 70 nm. The dispersed fine carbides were beneficial to the enhancement of the hardness in the steel. The intermediate heat treatment was proposed for an improvement of creep properties in reduced activation steel. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.
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