A study of an amorphous-crystalline structured Ti-25Ni-25Cu (at.%) shape memory alloy

被引：77

作者：

Rösner, H

Shelyakov, AV

Glezer, AM

Feit, K

Schlossmacher, P

机构：

[1] Forschungszentrum Karlsruhe GmbH, Inst Mat Forsch 1, D-76021 Karlsruhe, Germany

[2] Moscow Engn Phys Inst, Dept Solid State Phys, Moscow 115409, Russia

[3] Inst Phys Met, Moscow 107005, Russia

[4] Forschungszentrum Karlsruhe GmbH, Inst Mikrostrukturtech, D-76021 Karlsruhe, Germany

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1999年 / 273卷

关键词：

melt-spinning; titanium-nickel-copper alloy; DSC; TEM;

D O I：

10.1016/S0921-5093(99)00406-2

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Amorphous Ti-25Ni-25Cu (at.%) melt-spun ribbons have been annealed for various times below the crystallization temperature. The arising amorphous-crystalline microstructures have been characterized by means of transmission electron microscopy (TEM), differential scanning calorimetry (DSC), X-ray diffraction (XRD) and optical metallography. The crystallization occurred in form of spherical B 19-martensite grains surrounded by amorphous matrix. Subnanometric plate-like precipitates were formed inside of the martensite grains. Their density increased with the annealing time leading to embrittlement. The fully crystallized ribbons still contain the B2-phase. Two-stage transformation behavior has been found and is discussed with respect to the observed microstructures. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：733 / 737

页数：5

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