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Recent Research and Developments Related to Near-Equiatomic Titanium-Platinum Alloys for High-Temperature Applications
Titanium-platinum (Ti50Pt50) (all compositions in at%) alloy exhibits thermoelastic martensitic phase transformation above 1000°C and has potential for high-temperature shape memory material applications. However, as has been previously reported, Ti50Pt50
alloy exhibited a negligible recovery ratio (0‐11%) and low strength in martensite and especially in the austenite phase due to low critical stress for slip deformation. In order to improve the high-temperature strength and shape memory properties, the effects of partial substitution
of Ti with other Group 4 elements such as zirconium and hafnium and the effect of partial substitution of Pt with other platinum group metals (pgms) such as iridium and ruthenium on the high-temperature mechanical and shape memory properties of Ti50Pt50 alloy were recently
investigated. This paper reviews the transformation temperatures and high-temperature mechanical and shape memory properties of recently developed Ti site substituted (Ti,Zr)50Pt50, (Ti,Hf)50Pt50 and Pt site substituted Ti50(Pt,Ru)50
and Ti50(Pt,Ir)50 alloys for high-temperature (~800°C‐1100°C) material applications.
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Document Type: Research Article
Publication date: May 1, 2014
Johnson Matthey's journal of research on the platinum group metals and developments in their application in industry from 1957-2014. It has now been renamed the Johnson Matthey Technology Review
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