2024-03-28T11:52:32Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/751372022-11-17T02:08:08Zhdl_2115_20045hdl_2115_139(Pt, Ir)-50 at%Tiにおける形状記憶効果の可能性Potentials of Shape Memory Effect in (Pt, Ir)-50 at%Ti御手洗, 容子原, 徹三浦, 誠司細田, 秀樹high-temperature shape memory alloysPtTiIrTiB2B19martensitic transformation563It 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.日本金属学会Journal Articleapplication/pdfhttp://hdl.handle.net/2115/75137https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/75137/1/J.%20Jpn%20Inst.%20Metal%2069%288%29%20634.pdf0021-48761880-6880AN00062446日本金属学会誌6986346422005-08-01jpninfo:doi/10.2320/jinstmet.69.634publisher