scholarly journals Role of grain size on the martensitic transformation and ultra-fast superelasticity in shape memory alloys

2015 ◽  
Vol 95 ◽  
pp. 37-43 ◽  
Author(s):  
Keith R. Morrison ◽  
Mathew J. Cherukara ◽  
Hojin Kim ◽  
Alejandro Strachan
Keyword(s):  
Grain Size ◽  
Martensitic Transformation ◽  
Shape Memory Alloys ◽  
Shape Memory

Role of magnetism on the martensitic transformation in Ni–Mn-based magnetic shape memory alloys

2012 ◽  
Vol 60 (2) ◽  
pp. 459-468 ◽  
Author(s):  
V. Sánchez-Alarcos ◽  
V. Recarte ◽  
J.I. Pérez-Landazábal ◽  
C. Gómez-Polo ◽  
J.A. Rodríguez-Velamazán
Keyword(s):  
Martensitic Transformation ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Magnetic Shape Memory ◽  
Magnetic Shape Memory Alloys

The role of bimodal grain size distribution in nanocrystalline shape memory alloys

2018 ◽  
Vol 27 (10) ◽  
pp. 105004 ◽  
Author(s):  
Jakub Mikula ◽  
Siu Sin Quek ◽  
Shailendra P Joshi ◽  
David T Wu ◽  
Rajeev Ahluwalia
Keyword(s):  
Grain Size ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Size Distribution ◽  
Grain Size Distribution ◽  
Bimodal Grain Size ◽  
Bimodal Grain Size Distribution

scholarly journals Grain Size Effect on the Thermal-induced Martensitic Transformation in Polycrystalline Cu-based Shape Memory Alloys

2015 ◽  
Vol 2 ◽  
pp. S743-S746 ◽  
Author(s):  
P.M. La Roca ◽  
L.M. Isola ◽  
C.E. Sobrero ◽  
Ph. Vermaut ◽  
J. Malarría
Keyword(s):  
Grain Size ◽  
Martensitic Transformation ◽  
Size Effect ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Grain Size Effect

Atomic Order and Martensitic Transformation in Cu-Al-Be Shape Memory Alloys

1995 ◽  
Vol 05 (C8) ◽  
pp. C8-973-C8-978
Author(s):  
M. Jurado ◽  
Ll. Mañosa ◽  
A. González-Comas ◽  
C. Stassis ◽  
A. Planes
Keyword(s):  
Martensitic Transformation ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Atomic Order

scholarly journals Effect of Crystallographic Orientation and Grain Boundaries on Martensitic Transformation and Superelastic Response of Oligocrystalline Fe–Mn–Al–Ni Shape Memory Alloys

2021 ◽  
Author(s):  
A. Bauer ◽  
M. Vollmer ◽  
T. Niendorf
Keyword(s):  
Martensitic Transformation ◽  
Grain Boundary ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Grain Boundaries ◽  
Tensile Tests ◽  
Image Correlation ◽  
Stress Concentrations ◽  
Grain Orientations ◽  
High Degree

AbstractIn situ tensile tests employing digital image correlation were conducted to study the martensitic transformation of oligocrystalline Fe–Mn–Al–Ni shape memory alloys in depth. The influence of different grain orientations, i.e., near-〈001〉 and near-〈101〉, as well as the influence of different grain boundary misorientations are in focus of the present work. The results reveal that the reversibility of the martensite strongly depends on the type of martensitic evolving, i.e., twinned or detwinned. Furthermore, it is shown that grain boundaries lead to stress concentrations and, thus, to formation of unfavored martensite variants. Moreover, some martensite plates seem to penetrate the grain boundaries resulting in a high degree of irreversibility in this area. However, after a stable microstructural configuration is established in direct vicinity of the grain boundary, the transformation begins inside the neighboring grains eventually leading to a sequential transformation of all grains involved.

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