Effect of the alloying element chromium on the room temperature ductility of Fe3Al intermetallics

被引：46
作者：
Huang, YD
Yang, WY
Sun, ZQ
机构：
[1] Katholieke Univ Leuven, Dept MTM, B-3001 Heverlee, Belgium
[2] Univ Sci & Technol Beijing, Dept Mat Sci & Engn, Beijing 100083, Peoples R China
来源：
INTERMETALLICS | 2001年 / 9卷 / 02期
关键词：
iron aluminides (based on Fe3Al); intermetallics; miscellaneous; mechanical properties at ambient temperature; microstructure;
D O I：
10.1016/S0966-9795(00)00115-1
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 effect of the alloying element chromium on the room temperature ductility of Fe3Al intermetallics has been investigated by considering its effect on (1) intrinsic ductility related to the microstructure, etc.; (2) extrinsic ductility related to the surface state. Based on the dissociation energy, the effect of atom interactions on the room temperature ductility is discussed after considering the site occupation of the substitutional element Cr at sublattice sites in DO3 type stoichiometric Fe3Al intermetallics. The deduced results are in good agreement with those obtained from tensile tests of the samples with different structure and surface states in air and vacuum, and the observation of slip traces and APE trails left by imperfect dislocation slipping. (C) 2001 Elsevier Science Ltd. All rights reserved.
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页码：119 / 124
页数：6
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