Nanocrystalline FeAl intermetallic produced by mechanical alloying followed by hot-pressing consolidation

被引：83

作者：

Krasnowski, M. ^{[1
]}

Kulik, T. ^{[1
]}

机构：

[1] Warsaw Univ Technol, Fac Mat Sci & Engn, Warsaw, Poland

来源：

INTERMETALLICS | 2007年 / 15卷 / 02期

关键词：

iron aluminides; based on FeAl; nanostructured intermetallics; mechanical alloying and milling; powder metallurgy; including consolidation; electron microscopy; transmission;

D O I：

10.1016/j.intermet.2006.05.008

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In the present study mechanical alloying followed by hot-pressing consolidation has been used to obtain bulk nanocrystalline FeAl intermetallic compound. Nanocrystalline powder of Fe(Al) solid solution was the product of ball milling. This powder was sintered at 1000 degrees C for 180 s under a pressure of 7.7 GPa. Structural investigations of the consolidated material revealed that ordering of the Fe(Al) and its transformation into FeAl intermetallic occur during sintering and that the mean crystallite size of FeAl is 23 nm. The microhardness of the produced material is 1235 HV0.2, its density is 99.8% of theoretical value and its open porosity is 0%. The results obtained show that the quality of compaction with preserving nanometric grain size of the FeAl intermetallic is satisfactory and its microhardness is relatively high. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：201 / 205

页数：5

共 23 条

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