MICROSTRUCTURE AND MECHANICAL-PROPERTIES OF HOT-PRESSED NI3AL-BASED INTERMETALLIC POWDER PRODUCED BY ROTATING ELECTRODE PROCESS

被引：4
|
作者：
BOZIC, D [1 ]
MITKOV, M [1 ]
ILIC, N [1 ]
JOYANOVIC, MT [1 ]
ZDUJIC, M [1 ]
机构：
[1] SERBIAN ACAD ARTS & SCI, INST TECHN SCI, YU-11000 BELGRADE, YUGOSLAVIA
来源：
MATERIALS LETTERS | 1994年 / 21卷 / 02期
关键词：
D O I：
10.1016/0167-577X(94)90211-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Rapidly solidified powder of Ni3Al intermetallic compound modified with Fe, Ti and B was produced by a rotating electrode process (REP). The obtained powder has a mean particle size of 400 mum, spherical shape and very narrow size distribution. The powder was compacted by hot pressing to non-porous, homogeneous compacts with an average grain size of 50 mum. The yield strength shows positive temperature dependence with the maximum at 600-degrees-C. The ductility decreases moderately with temperature to the minimum at 600-degrees-C, and then abruptly increases. The results of this work show that the mechanical properties of the hot-pressed Ni3Al-based powder produced by REP are better than or at least comparable to nickel-aluminides obtained by advanced consolidation techniques (hot isostatic pressing, hot extrusion).
引用
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页码：161 / 166
页数：6
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