Development of microstructure in mechanically alloyed FeAl

被引：0
|
作者：
Knutson-Wedel, EM [1 ]
机构：
[1] Chalmers Univ Technol, Dept Engn Met, SE-41296 Gothenburg, Sweden
来源：
ELECTRON MICROSCOPY AND ANALYSIS 1999 | 1999年 / 161期
关键词：
D O I：
暂无
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
Fe and Al (40 at% Al) powder were mechanically alloyed in a planetary ball mill, and this process resulted in small powder particles composed of 4-10 nm nanocrystalline grains. Some of these crystallites were ordered FeAl with B2 structure but it was not possible to exclude that there also existed an extended bcc solid solution, Fe(Al). A subsequent heat treatment resulted in ordered FeAl grains, and compaction of the powder by HIP or hot extrusion gave a fine grained FeAl material with a uniform dispersion of intragranular nanosized precipitates of Al2O3.
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页码：443 / 446
页数：4
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