Potentials of shape memory effect in (Pt, Ir)-50 at%Ti

Yoko Yamabe-Mitarai; Toru Hara; Seiji Miura; Hideki Hosoda

doi:10.2320/jinstmet.69.634

Potentials of shape memory effect in (Pt, Ir)-50 at%Ti

Yoko Yamabe-Mitarai, Toru Hara, Seiji Miura, Hideki Hosoda

Integrated Research Division

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

It is known that some of platinum group metals base intermetallics have shape memory effect. We note PtTi because its phase transformation temperatures is at around 1273 K. The phase transformation of PtTi and the effect of Ir on the phase transformation were investigated by X-ray diffractometry (XRD), differential thermal analysis (DTA), in-situ surface observation in laser microscope, and microstructure observation in transmission electron microscopy (TEM). The shape recovery was investigated by dilatometry. Microstructure suggests martensitic phase transformation occurs in PtTi and (Pt, Ir)Ti. The shape recovery was found in some of the tested alloys. Potential of platinum group metals base intermetallics as high temperature shape memory alloys is discussed in this paper.

Original language	English
Pages (from-to)	634-642
Number of pages	9
Journal	Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume	69
Issue number	8
DOIs	https://doi.org/10.2320/jinstmet.69.634
Publication status	Published - 2005 Aug

Keywords

B19
B2
High-temperature shape memory alloys
IrTi
Martensitic transformation
PtTi

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

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abstract = "It is known that some of platinum group metals base intermetallics have shape memory effect. We note PtTi because its phase transformation temperatures is at around 1273 K. The phase transformation of PtTi and the effect of Ir on the phase transformation were investigated by X-ray diffractometry (XRD), differential thermal analysis (DTA), in-situ surface observation in laser microscope, and microstructure observation in transmission electron microscopy (TEM). The shape recovery was investigated by dilatometry. Microstructure suggests martensitic phase transformation occurs in PtTi and (Pt, Ir)Ti. The shape recovery was found in some of the tested alloys. Potential of platinum group metals base intermetallics as high temperature shape memory alloys is discussed in this paper.",

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AU - Hosoda, Hideki

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