Composition dependence of phase transformation behavior and shape memory effect of Ti(Pt, Ir)

[摘要] The phase transformation and high-temperature shape memory effect of Ti(Pt, Ir) were investigated. First, the Ti-rich phase boundary of Ti(Pt, Ir) was investigated by phase composition analysis by secondary electron microscopy (SEM) using an electron probe X-ray micro analyzer (EPMA), X-ray diffraction analysis and transmission electron microscopy (TEM). Then, the three alloys Ti-35Pt-10Ir, Ti-22Pt-221r, and Ti-10Pt-32Ir (at%) close to the phase boundary but in the single phase of Ti(Pt, Ir) were prepared by the arc melting method. The shape memory effect and crystal structure were investigated by compression loading-unloading tests and high-temperature X-ray diffraction analysis, respectively. (C) 2012 Elsevier B.V. All rights reserved.

[发布日期] 2013-11-15

[效力级别]  Proceedings Paper

[关键词] High-temperature alloys;Intermetallics;Shape memory;SEM;X-ray diffraction