The structure–phase transformations and mechanical properties of the shape memory effect alloys based on the system Cu–Al–Ni

2017 ◽  
Vol 4 (3) ◽  
pp. 4758-4762 ◽  
Author(s):  
Alexey E. Svirid ◽  
Vladimir G. Pushin ◽  
Natalia N. Kuranova ◽  
Alexandr V. Luk'yanov ◽  
ArtemV. Pushin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Shape Memory ◽  
Phase Transformations ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Structure Phase

scholarly journals Effect of Sm Doping on the Microstructure, Mechanical Properties and Shape Memory Effect of Cu-13.0Al-4.0Ni Alloy

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4007
Author(s):  
Qimeng Zhang ◽  
Bo Cui ◽  
Bin Sun ◽  
Xin Zhang ◽  
Zhizhong Dong ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Strengthening Effect ◽  
Face Centered Cubic ◽  
Compressive Fracture ◽  
Fine Grain ◽  
Fine Grain Strengthening ◽  
Face Centered

The effects of rare earth element Sm on the microstructure, mechanical properties, and shape memory effect of the high temperature shape memory alloy, Cu-13.0Al-4.0Ni-xSm (x = 0, 0.2 and 0.5) (wt.%), are studied in this work. The results show that the Sm addition reduces the grain size of the Cu-13.0Al-4.0Ni alloy from millimeters to hundreds of microns. The microstructure of the Cu-13.0Al-4.0Ni-xSm alloys are composed of 18R and a face-centered cubic Sm-rich phase at room temperature. In addition, because the addition of the Sm element enhances the fine-grain strengthening effect, the mechanical properties and the shape memory effect of the Cu-13.0Al-4.0Ni alloy were greatly improved. When x = 0.5, the compressive fracture stress and the compressive fracture strain increased from 580 MPa, 10.5% to 1021 MPa, 14.8%, respectively. When the pre-strain is 10%, a reversible strain of 6.3% can be obtained for the Cu-13.0Al-4.0Ni-0.2Sm alloy.

Enhancement of mechanical properties and shape memory effect of Ti–Cr–based alloys via Au and Cu modifications

2021 ◽  
pp. 104707
Author(s):  
Wan–Ting Chiu ◽  
Kaoru Wakabayashi ◽  
Akira Umise ◽  
Masaki Tahara ◽  
Tomonari Inamura ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect

scholarly journals Shape memory effect, temperature distribution and mechanical properties of friction stir welded nitinol

2019 ◽  
Vol 776 ◽  
pp. 334-345 ◽  
Author(s):  
S.S. Mani Prabu ◽  
H.C. Madhu ◽  
Chandra S. Perugu ◽  
K. Akash ◽  
R. Mithun ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Temperature Distribution ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Friction Stir

The Concept of Physical Metric in the Thermomechanical Modeling of Phase Transformations With Emphasis on Shape Memory Alloy Materials

2013 ◽  
Vol 135 (2) ◽  
Author(s):  
Vassilis P. Panoskaltsis ◽  
Lazaros C. Polymenakos ◽  
Dimitris Soldatos
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Phase Transformations ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Material Model ◽  
Internal Variable ◽  
Theoretical Interest ◽  
Numerical Examples ◽  
Thermomechanical Modeling

In this work we derive a new version of generalized plasticity, suitable to describe phase transformations. In particular, we present a general multi surface formulation of the theory which is capable of describing the multiple and interacting loading mechanisms, which occur during phase transformations. The formulation relies crucially on the consideration of the intrinsic material (“physical”) metric as a primary internal variable and does not invoke any decomposition of the kinematical quantities into elastic and inelastic (transformation induced) parts. The new theory, besides its theoretical interest, is also important for application purposes such as the description and the prediction of the response of shape memory alloy materials. This is shown in the simplest possible setting by the introduction of a material model. The ability of the model in simulating several patterns of the experimentally observed behavior of these materials such as the pseudoelastic phenomenon and the shape memory effect is assessed by representative numerical examples.

Effect of Ce addition on mechanical properties and shape memory effect of Cu-14%Al-4.5%Ni shape memory alloy

2020 ◽  
Vol 20 ◽  
pp. 452-460
Author(s):  
Raad Suhail Ahmed Adnan ◽  
Muna Kheither Abbass ◽  
Munther Mohammed AlKubaisy
Keyword(s):  
Mechanical Properties ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect

scholarly journals Two-way shape memory effect and mechanical properties of pulse discharge sintered Ni_{2.18}Mn_{0.82} Ga

2002 ◽  
Vol 16 (3-4) ◽  
pp. 173-179 ◽  
Author(s):  
T. Takagi ◽  
V. Khovailo ◽  
T. Nagatomo ◽  
M. Matsumoto ◽  
M. Ohtsuka ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Pulse Discharge

Features of Stress Changes in the Alloy Ti50Ni48,7Mo0,3V1 under Loading in a Wide Temperature Range

2015 ◽  
Vol 1085 ◽  
pp. 299-302 ◽  
Author(s):  
Viktor Gyunter ◽  
Gulsharat Baigonakova ◽  
Еkaterina Marchenko ◽  
Аnatoly Klopotov
Keyword(s):  
Mechanical Properties ◽  
Shape Memory ◽  
Shape Memory Effect ◽  
Yield Point ◽  
Memory Effect ◽  
Wide Temperature Range ◽  
Temperature Dependency ◽  
Maximum Value ◽  
Stress Changes ◽  
Temperature Ranges

The results of the study on properties of shape memory effect alloys, obtained on the basis of the experimentally determined temperature dependency of the shear martensitic stress in the alloyTi50Ni48.7Mo0.3V1, are described. It has been established that the total strain of the sample and the yield point reach a maximum value (ε = 25.5 %, σВ= 1280 МPа) at a test temperature of 300 K. It has been methodically shown how using this experiment in NiTi-based alloys it is possible to estimate temperature ranges of shape memory effect occurrence and to determine parameters of mechanical properties.

Sign in / Sign up

Export Citation Format

Share Document