Characterization and formation mechanism of nanocrystalline (Fe,Ti)3Al intermetallic compound prepared by mechanical alloying

被引：36

作者：

Rafiei, M. ^{[1
]}

Enayati, M. H. ^{[1
]}

Karimzadeh, F. ^{[1
]}

机构：

[1] Isfahan Univ Technol, Dept Mat Engn, Esfahan 8415683111, Iran

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 480卷 / 02期

关键词：

Nanostructured materials; Mechanical alloying; Intermetallics; FE3AL; FEAL; TEMPERATURE; COMPOSITES; TITANIUM;

D O I：

10.1016/j.jallcom.2009.02.072

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：

The nanocrystalline (Fe,Ti)(3)Al intermetallic compound was synthesized by mechanical alloying (MA) of elemental powder with composition Fe50Al25Ti25. The structural changes of powder particles during mechanical alloying were studied by X-ray diffractometry and microhardness measurements. Morphology and cross-sectional microstructure of powder particles were characterized by scanning electron microscopy. It was found that a Fe/Al/Ti layered structure was formed at the early stages of milling followed by the formation of Fe(Ti,Al) solid solution. This structure transformed to (FeTi)(3)Al intermetallic compound at longer milling times. Upon heat treatment of (Fe,Ti)(3)Al phase the degree of DO3 ordering was increased. The (Fe,Ti)(3)Al compound exhibited high microhardness value of about 1050 Hv. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：392 / 396

页数：5

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