Non-Conventional Techniques for the Study of Phase Transitions in NiTi-Based Alloys

被引：5

作者：

Nespoli, Adelaide ^{[1
]}

Villa, Elena ^{[1
]}

Passaretti, Francesca ^{[1
]}

Albertini, Franca ^{[2
]}

Cabassi, Riccardo ^{[2
]}

Pasquale, Massimo ^{[3
]}

Sasso, Carlo Paolo ^{[3
]}

Coisson, Marco ^{[3
]}

机构：

[1] CNR, IENI, Ist Energet & Interfasi, Unita Lecco, I-23900 Lecce, Italy

[2] CNR, IMEM, I-43124 Parma, Italy

[3] Ist Nazl Ric Metrol INRIM, I-10135 Turin, Italy

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2014年 / 23卷 / 07期

关键词：

dilatometry; magnetic measurement; Seebeck coefficient; shape memory alloy; SHAPE-MEMORY ALLOYS; MARTENSITIC-TRANSFORMATION; SYNCHROTRON-RADIATION;

D O I：

10.1007/s11665-014-1105-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Differential scanning calorimetry and electrical resistance measurements are the two most common techniques for the study of the phase transition path and temperatures of shape memory alloys (SMA) in stress-free condition. Besides, it is well known that internal friction measurements are also useful for this purpose. There are indeed some further techniques which are seldom used for the basic characterization of SMA transition: dilatometric analysis, magnetic measurements, and Seebeck coefficient study. In this work, we discuss the attitude of these techniques for the study of NiTi-based phase transition. Measurements were conducted on several fully annealed Ni50-x Ti50Cu (x) samples ranging from 3 to 10 at.% in Cu content, fully annealed at 850 A degrees C for 1 h in vacuum and quenched in water at room temperature. Results show that all these techniques are sensitive to phase transition, and they provide significant information about the existence of intermediate phases.

引用

页码：2491 / 2497

页数：7