Stress-strain behavior of Cu-Al-Ni single-crystal shape memory alloy at high temperature: shape memory effects

2004 ◽  
Author(s):  
Ganesh K. Kannarpady ◽  
Steve Trigwell ◽  
Abhijit Bhattacharyya ◽  
Ivan Viahhi ◽  
Sergei Pulnev
Keyword(s):  
High Temperature ◽  
Shape Memory Alloy ◽  
Single Crystal ◽  
Shape Memory ◽  
Memory Effects ◽  
Crystal Shape ◽  
Stress Strain ◽  
Strain Behavior ◽  
Shape Memory Effects

Anomalous stress-strain behavior of NiTi shape memory alloy close to the border of superelastic window

2021 ◽  
Vol 204 ◽  
pp. 114135
Author(s):  
Xiebin Wang ◽  
Xiayang Yao ◽  
Dominique Schryvers ◽  
Bert Verlinden ◽  
Guilong Wang ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Niti Shape Memory Alloy ◽  
Stress Strain ◽  
Strain Behavior

scholarly journals Effects of a Short Heat Treatment Period on the Pullout Resistance of Shape Memory Alloy Fibers in Mortar

Materials ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2278 ◽  
Author(s):  
Min Kyoung Kim ◽  
Dong Joo Kim ◽  
Young-Soo Chung ◽  
Eunsoo Choi
Keyword(s):  
Heat Treatment ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Memory Effects ◽  
Stress Recovery ◽  
Pullout Resistance ◽  
Pullout Tests ◽  
Dog Bone ◽  
Shape Memory Effects ◽  
Short Time

The feasibility of the crack closure of cementitious composites reinforced with shape memory alloy (SMA) fibers was investigated by performing single-fiber pullout tests. To demonstrate the fast crack closing ability, in this study, a heat treatment (300 °C) was applied for a short time (10 min). A short heat treatment was applied for 10 min, after the slip reached 0.5 mm, to activate the shape memory effects of cold-drawn SMA fibers. Two types of alloys were investigated, NiTi and NiTiNb, with two geometries, either smooth or dog-bone-shaped. During the heat treatment, the pullout stress of the SMA fibers initially decreased due to thermal extension, and then increased after heating for 1–3 min, resulting from the shape memory effects. However, their pullout stress recovery during and after the heat treatment was different for the different alloys and fiber geometries. The NiTi fibers generally produced a higher and faster recovery in terms of their pullout stress than the NiTiNb fibers, while the dog-bone-shaped fibers showed a faster pullout stress recovery than the smooth fibers.

scholarly journals High-temperature functional behavior of single crystal Ni51.2Ti23.4Hf25.4 shape memory alloy

2016 ◽  
Vol 106 ◽  
pp. 333-343 ◽  
Author(s):  
L. Patriarca ◽  
H. Sehitoglu ◽  
E. Yu. Panchenko ◽  
Y.I. Chumlyakov
Keyword(s):  
High Temperature ◽  
Shape Memory Alloy ◽  
Single Crystal ◽  
Shape Memory ◽  
Functional Behavior

607 Stress-strain behavior of ultra fine Nitinol shape memory alloy wires

2009 ◽  
Vol 2009.48 (0) ◽  
pp. 189-190
Author(s):  
Makoto Kimata ◽  
Hiroyuki KATO ◽  
Kazuaki SASAKI
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Stress Strain ◽  
Strain Behavior

Preliminary Investigations of a High Temperature Cu-13.3%Al-4%Ni Shape Memory Alloy Single Crystal

2003 ◽  
Author(s):  
Steve Trigwell ◽  
Ganesh Kumara K. ◽  
Abhijit Bhattacharyya ◽  
Muhammed A. Qidwai
Keyword(s):  
Plastic Deformation ◽  
Shape Memory Alloy ◽  
Single Crystal ◽  
Shape Memory ◽  
Room Temperature ◽  
Alloy Single Crystal ◽  
Stress Strain ◽  
Stress Cycling ◽  
Constitutive Response ◽  
Martensite Reorientation

Preliminary investigations on the constitutive response of a Cu-13.3%Al-4%Ni (wt%) shape memory alloy single crystal with stress-free transformation temperatures around 100 to 150°C are reported. Room temperature stress cycling tests were carried out at very low deformation rates. Reproducible stress/strain curves of up to 9% strain due to detwinning (martensitematensite phase transformations) with no plastic deformation were obtained. The data also indicated that a period of stress cycling is required to stabilize the material before reproducible stress-strain curves are obtained due to martensite reorientation.

Shape memory and ferromagnetic shape memory effects in single-crystal Ni2MnGa thin films

2004 ◽  
Vol 95 (5) ◽  
pp. 2593-2600 ◽  
Author(s):  
J. W. Dong ◽  
J. Q. Xie ◽  
J. Lu ◽  
C. Adelmann ◽  
C. J. Palmstrøm ◽  
...  
Keyword(s):  
Thin Films ◽  
Single Crystal ◽  
Shape Memory ◽  
Memory Effects ◽  
Shape Memory Effects ◽  
Ferromagnetic Shape Memory

A Study on Shape Memory Performance of Cu-Al-Ni-Be Alloy Single Crystal

2011 ◽  
Vol 287-290 ◽  
pp. 21-25
Author(s):  
Hua Ping Xu ◽  
Gao Feng Song ◽  
Xie Min Mao
Keyword(s):  
High Temperature ◽  
Temperature Gradient ◽  
Shape Memory Alloy ◽  
Single Crystal ◽  
Shape Memory ◽  
Directional Solidification ◽  
Memory Performance ◽  
Copper Base ◽  
Shape Memory Properties ◽  
Solidification Furnace

In this paper, single crystal of CuAlNiBe quaternary shape memory alloy was prepared in a high temperature gradient directional solidification furnace with a selective growing crystallizer. And its shape memory performance characters were systematically compared with other series copper base shape memory alloys. The results show that the single crystal of CuAlNiBe quaternary shape memory alloy has better shape memory properties.

Sign in / Sign up

Export Citation Format

Share Document