The influence of microstructure on the martensitic transformation in Cu-Zn-Al melt-spun ribbons

被引：5

作者：

Pelegrina, J. L. ^{[1
]}

Fabietti, L. M. ^{[2
]}

Condo, A. M. ^{[1
]}

Pozo Lopez, G. ^{[2
]}

Urreta, S. E. ^{[3
]}

机构：

[1] Univ Nacl Cuyo, Inst Balseiro, CONICET Ctr Atom Bariloche CNEA, RA-8400 San Carlos De Bariloche, Rio Negro, Argentina

[2] Univ Nacl Cordoba, CONICET IFFAMAF, RA-5000 Cordoba, Argentina

[3] Univ Nacl Cordoba, FAMAF, RA-5000 Cordoba, Argentina

来源：

PHILOSOPHICAL MAGAZINE | 2010年 / 90卷 / 20期

关键词：

shape memory alloy; rapid solidification; martensitic transformation; antiphase boundary; grain size; SHAPE-MEMORY ALLOYS; BETA-PHASE; DISLOCATIONS; TEMPERATURE; TRANSITION; STABILITY;

D O I：

10.1080/14786431003745401

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The martensitic transformation was investigated in a set of twin roller melt-spun Cu-Zn-Al shape memory alloys, solidified at tangential wheel speeds between 20 and 40 m/s. The resulting microstructures were analyzed using X-ray diffraction, optical and transmission electron microscopy techniques. The characteristic martensitic transformation temperature, MS, was determined for each condition by conventional resistometric methods. The ribbons are homogeneous in shape and for each quenching rate they exhibit a quite uniform MS temperature. By proper thermal treatments, the different factors affecting MS could be separately examined and from temperature measurements, the contribution of L21 antiphase boundaries evaluated. A calculation of this contribution using pair interchange energies is in good agreement with the experimental results.

引用

页码：2793 / 2805

页数：13

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