Effects of cerium addition on martensitic transformation and microstructure of Ti49.3Ni50.7 alloy

被引：18

作者：

Cai, Wei ^{[1
]}

Liu, Ailian ^{[1
]}

Sui, Jiehe ^{[1
]}

Zhao, Liancheng ^{[1
]}

机构：

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

来源：

MATERIALS TRANSACTIONS | 2006年 / 47卷 / 03期

关键词：

TiNiCe shape memory alloy; microstructure; martensitic transformation;

D O I：

10.2320/matertrans.47.716

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In order to study the effect of Cerium on martensitic transformation and microstructure of Ti49.3Ni50.7 alloy, a group of TiNiCe alloys with different content of Cc addition were prepared. The microstructure and the martensitic transformation behavior of TiNiCe ternary alloys were investigated by optical microscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The results show that the microstructure of Ti49.3M50.7 alloy is changed obviously by Ce addition, and there are many Ce-rich phases dispersing in the TiNi matrix. One step martensitic transformation due to B2 <-> B19' transformation occurs during the cooling and heating processes of the TiNiCe ternary alloys. The phase transformation temperatures increase remarkably when the content of Cc is less than 2 at%. However, when the content of Cc is further increasing, the phase transformation temperatures increase slowly and tend to stable.

引用

页码：716 / 719

页数：4

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