Mapping of 475 °C embrittlement in ferritic Fe-Cr-Al alloys

被引：125
作者：
Kobayashi, Satoru [1 ]
Takasugi, Takayuki [1 ,2 ]
机构：
[1] Tohoku Univ, Osaka Ctr Ind Mat Res, Inst Mat Res, Naka Ku, Osaka 5998531, Japan
[2] Osaka Prefecture Univ, Dept Mat Sci, Grad Sch Engn, Naka Ku, Osaka 5998531, Japan
来源：
SCRIPTA MATERIALIA | 2010年 / 63卷 / 11期
关键词：
Embrittlement; Aging; Stainless steels; Hardness test; DIFFUSION-MULTIPLE TECHNIQUE; QUATERNARY SYSTEM; PHASE-SEPARATION; ODS ALLOY;
D O I：
10.1016/j.scriptamat.2010.08.015
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Embrittlement at 475 degrees C was mapped in ferritic ternary alloys with a wide composition range of Fe-(10-30)Cr-(0-20)Al-(at.%) using a diffusion multiple technique. A large solid solution of Al suppresses the 475 C embrittlement, while a small solid solution of Al promotes embrittlement. Transmission electron microscopy observations on aged samples suggest that suppression of the embrittlement due to Al addition can be attributed to the suppression of phase separation of the ferrite phase into the two phases Fe-rich ferrite and Cr-rich ferrite. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1104 / 1107
页数：4
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