Nanocrystalline FeAl-TiN composites obtained by hot-pressing consolidation of reactively milled powders

被引：39
作者：
Krasnowski, M. [1 ]
Kulik, T. [1 ]
机构：
[1] Warsaw Univ Technol, Fac Mat Sci & Engn, PL-02507 Warsaw, Poland
来源：
SCRIPTA MATERIALIA | 2007年 / 57卷 / 06期
关键词：
mechanical alloying; hot-pressing; nanocomposite; iron aluminides; nitrides; IRON ALUMINIDE; NANOCOMPOSITE; CERAMICS; MECHANISMS; METALS;
D O I：
10.1016/j.scriptamat.2007.04.031
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Bulk FeAl-TiN nanocomposites with 50, 30 and 10 at.% TiN were produced by reactive milling and subsequent consolidation of nanocrystalline Fe(Al)-TiN composite powders at 1000 degrees C under a pressure of 7.7 GPa. Transformation of Fe(Al) into FeAl intermetallic occurred during consolidation. The mean crystallite size of FeAl and TiN was about 20 nm. We infer that application of high pressure hinders grain growth at elevated temperatures. The microhardness of the nanocomposites varied between 1497 and 1305 HVO.2, depending on the amount TiN. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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收藏
页码：553 / 556
页数：4
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