Influence of Thermomechanical Treatment on Structural-Phase Transformations and Mechanical Properties of the Cu–Al–Ni Shape-Memory Alloys

2018 ◽  
Vol 61 (9) ◽  
pp. 1681-1686 ◽  
Author(s):  
A. E. Svirid ◽  
N. N. Kuranova ◽  
A. V. Lukyanov ◽  
V. V. Makarov ◽  
N. V. Nikolayeva ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Phase Transformations ◽  
Thermomechanical Treatment ◽  
Structural Phase ◽  
Structural Phase Transformations

Surface Effects on Structural Phase Transformations in Nanosized Shape Memory Alloys

2013 ◽  
Vol 117 (15) ◽  
pp. 7895-7901 ◽  
Author(s):  
Zhen Zhang ◽  
Xiangdong Ding ◽  
Junkai Deng ◽  
Jian Cui ◽  
Jun Sun ◽  
...  
Keyword(s):  
Shape Memory Alloys ◽  
Shape Memory ◽  
Phase Transformations ◽  
Structural Phase ◽  
Surface Effects ◽  
Structural Phase Transformations

New trends in differential scanning calorimetry

1989 ◽  
Vol 67 (6) ◽  
pp. 983-990 ◽  
Author(s):  
H. Tachoire ◽  
V. Torra
Keyword(s):  
Differential Scanning Calorimetry ◽  
Acoustic Emission ◽  
Martensitic Transformation ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Phase Transformations ◽  
Entropy Production ◽  
Thermomechanical Treatment ◽  
Scanning Calorimetry

Recent applications of differential scanning calorimetry in the study of solid–solid transformations are presented. The importance of the deconvolution of the thermograms and of the modelling of the calorimetric equipment is stressed.Investigations of the phase transformations of the martensitic type in shape-memory alloys have made clear the influence of thermomechanical treatment of the material and have evaluated the influence of defects on the dynamics of transformation. A combination of calorimetric and acoustical observations has demonstrated irreversibilities, even in the so-called thermoelastic transitions. Keywords: martensitic transformation, differential scanning calorimetry, entropy production, thermomechanical treatments, acoustic emission.

scholarly journals Structural phase transformations and shape memory effect in ZrCu along with Ni and Hf additions

2015 ◽  
Vol 33 ◽  
pp. 06005 ◽  
Author(s):  
Tetiana Kosorukova ◽  
Georgiy Firstov ◽  
Yuri Koval ◽  
Pavlo Verhovlyuk ◽  
Jan Van Humbeeck ◽  
...  
Keyword(s):  
Shape Memory ◽  
Phase Transformations ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Structural Phase ◽  
Structural Phase Transformations

Improvement of Mechanical Properties of Powder Metallurgical NiTi Shape Memory Alloys

2006 ◽  
Vol 8 (4) ◽  
pp. 247-252 ◽  
Author(s):  
J. Mentz ◽  
M. Bram ◽  
H. P. Buchkremer ◽  
D. Stöver
Keyword(s):  
Mechanical Properties ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Niti Shape Memory Alloys

A Comparative Study of Structure Formation in Thermomechanically Treated Ti-Ni and Ti-Nb-(Zr, Ta) SMA

2012 ◽  
Vol 706-709 ◽  
pp. 1931-1936 ◽  
Author(s):  
Sergey Prokoshkin ◽  
Vladimir Brailovski ◽  
Karine Inaekyan ◽  
Andrey Korotitskiy ◽  
Sergey Dubinskiy ◽  
...  
Keyword(s):  
Cold Rolling ◽  
Comparative Study ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Structure Formation ◽  
Thermomechanical Treatment ◽  
Functional Properties ◽  
Nanocrystalline Structure ◽  
Technological Factors

The processes of structure formation in Ti-Ni and in Ti-Nb-Zr, Ti-Nb-Ta shape memory alloys (SMA) under thermomechanical treatment (TMT) were studied. The TMT comprised cold rolling with true strains from e=0.25 to 2 and post-deformation annealing. Differences in these processes between two groups of alloys are considered. The main conclusions are as follows: nanostructures created by TMT are useful for radical improvement of the SMA functional properties, and an optimum nanostructure (nanocrystalline structure, nanosubgrained structure or theirmixture) should be selected by taking into account other structural and technological factors.

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