Estimation of Internal Stresses in Shape Memory Wires during Thermal Cycling under Constant Load: A Macromechanical Approach

2000 ◽  
Vol 11 (7) ◽  
pp. 516-524 ◽  
Author(s):  
Carlos José De Araújo ◽  
Michel Morin ◽  
Gérard Guénin
Keyword(s):  
Thermal Cycling ◽  
Shape Memory ◽  
Constant Load ◽  
Internal Stresses

Deformation Behavior of Functionally Graded Ti-Ni Shape Memory Alloys

2007 ◽  
Vol 544-545 ◽  
pp. 211-214 ◽  
Author(s):  
Tae Hyun Nam ◽  
Hyun Gon Kim ◽  
Ju Young Choi ◽  
Jung Moo Lee ◽  
Suk Bong Kang ◽  
...  
Keyword(s):  
Temperature Gradient ◽  
Thermal Cycling ◽  
Shape Memory ◽  
Yield Stress ◽  
Deformation Behavior ◽  
Annealing Temperature ◽  
Tensile Tests ◽  
Constant Load ◽  
Functionally Graded ◽  
Ni Alloy

Deformation behavior of temperature gradient anneal(TGA) treated Ti-50.0Ni(at%) alloys were investigated by means of thermal cycling tests under constant load and tensile tests. TGA treated Ti-Ni alloy wires showed a sequential deformation behavior along the length of the specimen since the stress required for the B2-B19’ transformation increased with decreasing annealing temperature. Considerably large residual elongation(about 0.4 %) occurred in the TGA treated Ti-Ni alloy under the applied stress of 80 MPa, which is ascribed to the fact that yield stress of the sample annealed at 823 K is lower than the stress required for the B2-B19’ transformation of the sample annealed at 658 K.

scholarly journals Effects of aging and thermal cycling on the microstructure and damping behaviors of a porous CuAlMn shape memory alloy

2020 ◽  
Vol 9 (4) ◽  
pp. 7020-7026
Author(s):  
Qian Wang ◽  
Liwei Wang ◽  
Jie Kang ◽  
Qingzhou Wang ◽  
Chunxiang Cui ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Thermal Cycling ◽  
Shape Memory ◽  
Effects Of Aging
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