Experimental investigation of phase equilibria in Ge–Ni–Ti system

•Phase relations of the Ge–Ni–Ti ternary system at 973 and 1073K were established.•Two new stable ternary phases τ1 and τ2 were found and confirmed for the first time.•The binary phase GeTi3 was confirmed to exist stably at 973K.•Ti can substitute for about 14at.% Ge in β(Ge,Ti)Ni3. Phase relations...

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Bibliographic Details
Published in:Journal of alloys and compounds 2015-10, Vol.645, p.344-351
Main Authors: Xie, Z.Y., Lv, K.L., Luo, Y.H., Liu, H.S., Jin, Z.P.
Format: Article
Language:English
Subjects:
Binary systems (materials)
Diffraction
Germanium
Ge–Ni–Ti alloy
Isothermal section
Microstructure
Nickel
Phase diagram
Sampling
Ternary system
Ternary systems
Titanium
X-ray diffraction
X-rays
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Summary:•Phase relations of the Ge–Ni–Ti ternary system at 973 and 1073K were established.•Two new stable ternary phases τ1 and τ2 were found and confirmed for the first time.•The binary phase GeTi3 was confirmed to exist stably at 973K.•Ti can substitute for about 14at.% Ge in β(Ge,Ti)Ni3. Phase relations in the Ge–Ni–Ti ternary system have been studied through alloy sampling assisted with electron probe microanalysis (EPMA), and X-ray diffraction (XRD) techniques. The binary phase GeTi3 was confirmed to exist stably at 973K and two new ternary phases, τ1 and τ2, were detected, of which only τ1 can be stable up to 1073K. In light of the characterized phases in the annealed alloys, isothermal sections of the Ge–Ni–Ti system were constructed, which consist of 22 and 21 three-phase regions at 973 and 1073K, respectively. In addition, Ti can substitute for about 14at.% Ge in β(Ge,Ti)Ni3.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2015.05.104