Phase equilibria in the Ni-Al-Ta system

被引:0
|
作者
Palm, M
Sanders, W
Sauthoff, G
机构
来源
ZEITSCHRIFT FUR METALLKUNDE | 1996年 / 87卷 / 05期
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TF [冶金工业];
学科分类号
0806 ;
摘要
Phase equilibria in the Ni-Al-Ta system were determined at 1000 and 1250 degrees C. From metallography, X-ray diffraction and electron probe microanalysis (EPMA). two isothermal sections for Ta contents < 50 at. % were set up. The stability ranges of the Laves phase NiAlTa and the Heusler phase Ni2AlTa were fixed and that of Ni6AlTa is confirmed. Several other ternary intermetallic phases, which had been reported in the literature, are not confirmed. Lattice constants are given for all phases studied. For those phases with a large solid solubility range, i.e. NiTa and NiAlTa, they are given as a function of composition.
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页码:390 / 398
页数:9
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