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

被引：23

作者：

Liu, A. L. ^{[1
]}

Sui, J. H. ^{[1
]}

Lei, Y. C. ^{[1
]}

Cai, W. ^{[1
]}

Gao, Z. Y. ^{[1
]}

Zhao, L. C. ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE | 2007年 / 42卷 / 14期

关键词：

D O I：

10.1007/s10853-006-0558-x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 degrees C.

引用

页码：5791 / 5794

页数：4

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