The microstructure of melt spun Ti-Ni-Cu-Zr shape memory alloys

被引：13
|
作者：
Vermaut, P
Litynska, L
Portier, R
Ochin, P
Dutkiewicz, J
机构：
[1] Ecole Normale Super, Lab Met Struct, F-75231 Paris 05, France
[2] CNRS, UPR 2801, Ctr Etud Chim Met, F-94400 Vitry Sur Seine, France
[3] Polish Acad Sci, Inst Met & Mat Sci, PL-30059 Krakow, Poland
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2003年 / 81卷 / 2-3期
关键词：
Ti-Ni-Cu-Zr alloys; melt-spinning; shape memory alloys; amorphous structure; microstructure;
D O I：
10.1016/S0254-0584(03)00026-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
NiTi base shape memory melt spun ribbons with a high substitution of Ni by Cu and Ti by Zr have been analysed. Depending of the chemical composition of the alloy, the ribbons are crystalline or amorphous. Transmission electron microscopy (TEM) studies in the as-cast state and after crystallization indicated that in the as-cast state the Ti40Ni25Cu25Zr10 ribbons are constituted of two phases (Ti2Ni + amorphous phase) whereas the Ti40Ni35Cu15Zr10 ribbons are fully amorphous and are single phase after crystallisation with a B2 structure. High resolution electron microscopy (HREM) observations have shown that the crystalline/amorphous phase interface is highly wavy even at the nanometric scale and that the B2 particles are single ordered domains. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：380 / 382
页数：3
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