Characterization of the mechanical properties of ultra-fine grained NiTiCr-wires

被引：12

作者：

Frotscher, M. ^{[1
]}

Burow, J. ^{[1
]}

Schoen, P. ^{[2
]}

Neuking, K. ^{[1
]}

Boeckmann, R. ^{[2
]}

Eggeler, G. ^{[1
]}

机构：

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

[2] Knappschaftskrankenhaus Bochum Langendreer, Univ Klin Mund Kiefer Gesichtschirurg, Bochum, Germany

来源：

MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK | 2009年 / 40卷 / 1-2期

关键词：

NiTiCr; shape memory alloys; pseudoelasticity; mechanical properties; functional and structural fatigue; ALLOYS;

D O I：

10.1002/mawe.200800379

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

NiTiCr is used in medicine for retriever devices, dental- and guide wires [1-3]. Very little has been published in literature about this ternary NiTi-alloy. In the present work, the mechanical properties of NiTiCr shape memory alloy (SMA) wires (0.25 wt.% Cr) in the as-received condition and after a number of different heat treatments were studied. The surface quality of the wires was examined, because it is known that the surface condition has an influence on fatigue life. Mechanical uniaxial loading-unloading tensile and cyclic tests were performed. Bending-rotation fatigue (BRF) tests at higher rpm-levels were conducted in air and in oil. This is important with regard to possible applications, where NiTiCr might be used as a structural component.

引用

页码：17 / 22

页数：6

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