A NEW PHASE IN AL-NI-TI ALLOYS MADE FROM MECHANICALLY ALLOYED POWDERS

被引:5
|
作者
CABANASMORENO, JG [1 ]
ITSUKAICHI, T [1 ]
UMEMOTO, M [1 ]
机构
[1] TOYOHASHI UNIV TECHNOL, DEPT PROD SYST ENGN, TOYOHASHI 441, JAPAN
关键词
Alloying - Crystal structure - Hot pressing - Powder metallurgy - Quenching;
D O I
10.1016/0921-5093(94)90831-1
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
A new phase (the ''chi phase'') has been found in Al-Ni-Ti alloys produced by mechanical alloying and hot pressing. The structure of this new phase is similar to that of the NiTi2 compound (f.c.c., E9(3)) but with a lattice parameter of about 1.14-1.15 nm. A variety of additional experiments with alloys produced by arc melting and rapid quenching indicate that oxygen contamination (0.5-1.0 wt.%) is responsible for the occurrence of the new phase. Some suggestions are made regarding the atomic arrangement in the lattice of the chi phase.
引用
收藏
页码:1202 / 1206
页数:5
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