Experimental Confirmation of Ni5Al3 Phase in Ni-Al Binary System by Diffusion Couple Technique

被引：0
|
作者：
Li Changfa [1 ]
Ren Yuping [2 ]
Qin Gaowu [2 ]
机构：
[1] Tianjin Univ Technol, Sch Mat Sci & Engn, Tianjin 300384, Peoples R China
[2] Northeastern Univ, Key Lab Anisotropy & Mat MOE, Shenyang 110004, Peoples R China
来源：
MATERIALS AND MANUFACTURING, PTS 1 AND 2 | 2011年 / 299-300卷
关键词：
Ni-Al binary system; Diffusion couple technique; Ni5Al3; Phase diagram; SHAPE-MEMORY ALLOY; INTERMETALLIC COMPOUNDS;
D O I：
10.4028/www.scientific.net/AMR.299-300.224
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The equilibrium phase relationships and compositions of Ni - 51at.%Al/Ni - 26at.%Al diffusion couple heat treated at 650 degrees C for various times have been investigated by means of diffusion couple technique. Experimental results showed that Ni5Al3 phase was not only stable at 650 degrees C, but also had a large solubility range (45.3 similar to 40.6) at.% Al. The obtained relationships of NiAl/Ni5Al3 and Ni5Al3/Ni3Al are in accordance with the current generally accepted Ni-Al binary system phase diagram, but their composition ranges are quite different from the presently accepted one, that is, the the phase boundaries of NiAl / (Ni5Al3 + NiAl), (Ni5Al3 + NiAl) / Ni5Al3 and Ni5Al3 / (Ni3Al + Ni5Al3) significantly shift to the Al-rich side.
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页码：224 / +
页数：2
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