Size effect and scaling power-law for superelasticity in shape-memory alloys at the nanoscale

2017 ◽  
Vol 12 (8) ◽  
pp. 790-796 ◽  
Author(s):  
Jose F. Gómez-Cortés ◽  
Maria L. Nó ◽  
Iñaki López-Ferreño ◽  
Jesús Hernández-Saz ◽  
Sergio I. Molina ◽  
...  
Keyword(s):  
Size Effect ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Power Law

Grain Size Effect on the Microstructure of Deformed Fe-Mn-Si Based Shape Memory Alloys

2000 ◽  
Vol 327-328 ◽  
pp. 267-270 ◽  
Author(s):  
T. Masuya ◽  
N. Yoneyama ◽  
Shinji Kumai ◽  
Akikazu Sato
Keyword(s):  
Grain Size ◽  
Size Effect ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Grain Size Effect

Interfacial Properties and Critical Avalanche Exponents of Shape Memory Alloys and Related Materials

2011 ◽  
Vol 172-174 ◽  
pp. 3-12 ◽  
Author(s):  
Ekhard Salje
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Power Law ◽  
Three Dimensional ◽  
Front Propagation ◽  
Elastic Response ◽  
Internal Structures ◽  
Driven System ◽  
Applied Forces ◽  
Dimensional Crystal

Interfaces in martensites and ferroelastic crystals show internal structures which are not simply the interpolation of the two adjacent domains. These structures can influence solitary front propagation as observed for large depinning forces. They also contribute to local pinning of walls when the applied forces are close to the depinning threshold. Under these conditions, walls propagate in jerks and avalanches. Typical depinning is observed for very small forces in single ferroelastic needle domain. It is shown that jerks occur in elastically driven system both for planar walls (D=2) and for needle tips (which represents a line in the three dimensional crystal, D=1). The experimental power law exponents are ~ -2 for the energy exponent for collective avalanches, -1.3 for the elastic response function and -1.8 for an advancing needle domain in LaAlO3.

scholarly journals Grain size effect on the R-phase transformation of nanocrystalline NiTi shape memory alloys

2014 ◽  
Vol 49 (13) ◽  
pp. 4643-4647 ◽  
Author(s):  
Xiaobin Shi ◽  
Lishan Cui ◽  
Daqiang Jiang ◽  
Cun Yu ◽  
Fangmin Guo ◽  
...  
Keyword(s):  
Grain Size ◽  
Phase Transformation ◽  
Size Effect ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Grain Size Effect ◽  
Niti Shape Memory Alloys

scholarly journals Universal Scaling Law for the Size Effect on Superelasticity at the Nanoscale Promotes the Use of Shape‐Memory Alloys in Stretchable Devices

2019 ◽  
Vol 6 (2) ◽  
pp. 1900741
Author(s):  
Valeria Fuster ◽  
José F. Gómez‐Cortés ◽  
María L. Nó ◽  
Jose M. San Juan
Keyword(s):  
Size Effect ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Scaling Law ◽  
Universal Scaling
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