Martensitic phase transformations of nanocrystalline NiTi shape memory alloys processed by repeated cold rolling

2011 ◽  
Vol 102 (6) ◽  
pp. 634-642 ◽  
Author(s):  
M. Peterlechner ◽  
T. Waitz ◽  
C. Gammer ◽  
T. Antretter
Keyword(s):  
Cold Rolling ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Phase Transformations ◽  
Martensitic Phase ◽  
Martensitic Phase Transformations ◽  
Niti Shape Memory Alloys

Influence of Ni on martensitic phase transformations in NiTi shape memory alloys

2010 ◽  
Vol 58 (9) ◽  
pp. 3444-3458 ◽  
Author(s):  
J. Frenzel ◽  
E.P. George ◽  
A. Dlouhy ◽  
Ch. Somsen ◽  
M.F.-X. Wagner ◽  
...  
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Phase Transformations ◽  
Martensitic Phase ◽  
Martensitic Phase Transformations ◽  
Niti Shape Memory Alloys

Influence of carbon on martensitic phase transformations in NiTi shape memory alloys

2007 ◽  
Vol 55 (4) ◽  
pp. 1331-1341 ◽  
Author(s):  
J. Frenzel ◽  
Z. Zhang ◽  
Ch. Somsen ◽  
K. Neuking ◽  
G. Eggeler
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Phase Transformations ◽  
Martensitic Phase ◽  
Martensitic Phase Transformations ◽  
Niti Shape Memory Alloys

scholarly journals Stress-Induced Martensitic Phase Transformations in NiTi Shape Memory Alloys During Dynamic Loading

2000 ◽  
Author(s):  
David A. Miller ◽  
W. Richards Thissell ◽  
George T. Gray ◽  
Duncan A. S. Macdougall
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Dynamic Loading ◽  
Void Growth ◽  
Split Hopkinson Pressure Bar ◽  
Large Strain ◽  
Martensitic Phase ◽  
Hopkinson Pressure Bar ◽  
Martensitic Phase Transformations ◽  
Niti Shape Memory Alloys

Abstract This research explores the near-adiabatic, high strain rate stress-induced martensitic phase transformation in NiTi shape memory alloys using both a compressive and tensile Split Hopkinson Pressure Bar (SHPB). The results of the dynamic loading tests are presented with emphasis on the loading rate, stress-strain response, specimen temperature and post-test microstructural evaluation. In addition to the large strain rates, tensile specimens of various geometries are tested to large strain levels such that void growth and failure mechanisms are identified. The dynamically loaded specimens failed in a mixed mode, ductile void growth followed by transgranular failure. The void growth in incipient failure specimens showed ductile void growth throughout the specimen cross-section.

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