journal article·2007-07

Effect of Y addition on microstructure and martensitic transformation of a Ni-rich Ti–Ni shape memory alloy

A. L. Liu, J. H. Sui, Y. C. Lei, W. Cai, Z. Y. Gao, L. C. Zhao

Journal of Materials Science· Volume 42· Issue 14
Publisher page

Abstract

In the present work, 1 at% Y was added to Ti-50.7at%Ni alloy to prepare Ti-50.2Ni-1Y alloy and the effects of rare earth Y addition on the microstructure and martensitic transformation behavior of Ti-50.7at%Ni alloy was investigated by optical microscope, scanning electronic microscope (SEM) X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The results show the microstructure of Ti-50.2Ni-1Y alloy is different with that of Ti-50.7at.%Ni alloy, and its microstructure consists of B19′martensite and the Y-rich phase, which may be YNi phase. One-step martensitic transformation occurs in Ti-50.2Ni-1Y ternary alloy. The phase transformation temperatures increase rapidly with Y addition, and the increase of Ms is about 85°C.
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Research context

OpenAlex topics: Shape Memory Alloy Transformations · Microstructure and Mechanical Properties of Steels · Titanium Alloys Microstructure and Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

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