Diffraction characteristics of mechanically alloyed nanocrystalline FeAl

Title
Diffraction characteristics of mechanically alloyed nanocrystalline FeAl
Authors
최근섭김도향홍경태
Keywords
FeAl; Mechanical alloying; Nanocrystalline; Nano-scale ordering
Issue Date
1997-12
Publisher
한국전자현미경학회지
Citation
VOL 27, NO 4, 473-481
Abstract
Disorder-order transformation of nanocrystalline FeAl have been investigated by a combination of electron and X-ray diffraction analysis including high resolution electron microscopy and differential scanning calorimetry. Fe-50at.%Al powders mechanically alloyed for 90 hours consist of nm size grains haying either disordered b.c.c. structure or amorphous structure. X-ray and electron diffraction of mechanically alloyed FeAl powders show that disorder-order transformation occurs at the temperature range of . Such a low-temperature ordering behavior exhibiting an exothermic reaction is attributable to the nm-scale grain structure with a large amount of defects accumulated during mechanical alloying process.
URI
http://pubs.kist.re.kr/handle/201004/10002
ISSN
12256773
Appears in Collections:
KIST Publication > Article
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