Mechanical properties of Ni-Mn-Ga and Ni-Ti-based melt-spun ribbons

被引：0
|
作者：
Pons, J [1 ]
Cesari, E [1 ]
Santamarta, R [1 ]
Chernenko, VA [1 ]
机构：
[1] Univ Illes Balears, Dept Fis, E-07071 Palma de Mallorca, Spain
来源：
ADVANCES IN MECHANICAL BEHAVIOUR, PLASTICITY AND DAMAGE, VOLS 1 AND 2, PROCEEDINGS | 2000年
关键词：
shape memory; martensite; Ni-Ti; Ni-Mn-Ga; melt-spinning; fracture; recoverable strain;
D O I：
暂无
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Several Ni-Mn-Ga and Ni-Ti-based ribbons have been produced by melt-spinning. Their fracture characteristics and moduli of elasticity have been determined, as well as shape memory properties by thermomechanical cycling. Ni-Mn-Ga ribbons exhibit brittle fracture, but 0.6 % recoverable strain under 25 MPa tensile stress is obtained. Ni-Ti-based ribbons have better macroscopic quality and functional properties: Ni-50Ti-25Cu shows one way shape memory effect close to 2% under 50 MPa, and equiatomic NiTi reaches 7.5 % under the same load. For NiTi ribbons a two-way shape memory effect of 3% can be obtained by thermomechanical cycling.
引用
收藏
页码：879 / 884
页数：6
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