Low-melting-point titanium-base brazing alloys. Part 1: Characteristics of two-, three-, and four-component filler metals
- National Cheng-Kung Univ., Tainan (Taiwan, Province of China). Dept. of Materials Science and Engineering
The melting point, microstructure, phase, and electrochemical behavior of Ti-21Ni-15Cu alloy, together with two-, three-, and four-component low-melting-point titanium-base brazing alloys, are presented in this paper. Five filler metals were selected for the study, in which melting points were measured by differential thermal analysis, phases identified by x-ray diffractometry, and corrosion behaviors tested by potentiodynamic polarization. The experimental results show that the three-component Ti-15Cu-15Ni and the newly developed Ti-21Ni-14Cu alloys exhibit the combination of lower melting point and superior corrosion resistance compared to the two- and four-component titanium alloys, 316L stainless steel, and a Co-Cr-Mo alloy in Hank`s solution at 37 C. On a short time basis, the presence of Ti{sub 2}Ni and Ti{sub 2}Cu intermetallics in the Ti-15Cu-15Ni and Ti-21Ni-14Cu alloys should not be preferentially dissolved in galvanic corrosion with respect to the dissimilar Ti-6Al-4V alloy.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 561917
- Journal Information:
- Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 6 Vol. 6; ISSN 1059-9495; ISSN JMEPEG
- Country of Publication:
- United States
- Language:
- English
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