Phase Transformations and Functional Properties of NiTi Alloy with Ultrafine-Grained Structure

被引：18

作者：

Prokofiev, Egor ^{[1
]}

Burow, Juri ^{[2
]}

Frenzel, Jan ^{[2
]}

Gunderov, Dmitry ^{[1
]}

Eggeler, Gunther ^{[2
]}

Valiev, Ruslan ^{[1
]}

机构：

[1] Ufa State Aviat Tech Univ, Inst Phys Adv Mat, K Marx Str 12, Ufa 450000, Russia

[2] Ruhr Univ Bochum, Inst Werkstoffe, D-44801 Bochum, Germany

来源：

NANOMATERIALS BY SEVERE PLASTIC DEFORMATION: NANOSPD5, PTS 1 AND 2 | 2011年 / 667-669卷

基金：

俄罗斯基础研究基金会;

关键词：

NiTi shape memory alloys; severe plastic deformation; martensitic transformations; pseudoelastic cycling; MARTENSITIC TRANSFORMATIONS; MEMORY;

D O I：

10.4028/www.scientific.net/MSF.667-669.1059

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Severe plastic deformation (SPD) processes, are successfully employed to produce ultra fine grain (UFG) and nanocrystalline (NC) microstructures in Ni50.7Ti49.3 shape memory alloy. The effect of grain size on phase transformations during annealing is investigated by differential scanning calorimetry (DSC) and transmission electron microscopy (TEM). The results of comparative studies of phase transformations in coarse-grained, UFG and NC alloys after SPD and subsequent long-term (up to 100 hours) annealing at 400 degrees C is presented. The functional properties and the innovation potential of UFO NiTi alloys is considered and discussed.

引用

页码：1059 / +

页数：2

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