A cyclic integrated microstructural-mechanical model for a shape memory alloy

被引：9

作者：

Bellini, C. ^{[1
]}

Berto, F. ^{[2
]}

Di Cocco, V. ^{[1
]}

Iacoviello, F. ^{[1
]}

机构：

[1] Univ Cassino & Lazio Meridionale, DICeM, Via G Biasio 43, I-03043 Cassino, FR, Italy

[2] NTNU Norwegian Univ Sci & Technol, Richard Birkelands Vei 2b, N-7491 Trondheim, Norway

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2021年 / 153卷

关键词：

Shape memory alloys; Cyclic properties; Tensile loading; FATIGUE-CRACK PROPAGATION; SUPERELASTIC NITI; BEHAVIOR; STRESS; TRANSFORMATION; EVOLUTION; STRAIN;

D O I：

10.1016/j.ijfatigue.2021.106473

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Shape memory alloys are able to recover the initial shape even after a large deformation. The memory property is due to the ability to change the microstructure under a variation of the stress state or the temperature. The stress-strain curve is characterized by the presence of a stage where the slope of the curve sharply decreases and the initial microstructure transforms into a new one. In this work, an integrated microstructural-mechanical model is proposed for the equiatomic NiTi shape memory alloy, that is suitable to predict the cyclic behaviour of a pseudoelastic shape memory alloy starting from the microstructure composition.

引用

页数：8

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