Improvement in the Mechanical Properties of High Temperature Shape Memory Alloy (Ti50Ni25Pd25) by Copper Addition
Joint Authors
Rehman, Saif ur
Khan, Mushtaq
Khan, A. Nusair
Jaffery, Syed Husain Imran
Ali, Liaqat
Mubashar, Aamir
Source
Advances in Materials Science and Engineering
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-03-09
Country of Publication
Egypt
No. of Pages
7
Abstract EN
High temperature shape memory alloys Ti50Ni25Pd25 and Ti50Ni20Pd25Cu5 were developed, characterized, and tensile tested in both martensite ( Mf − 50°C) and austenite ( Af + 50°C) phases.
The transformation temperatures of ternary Ti50Ni25Pd25 alloy were increased by 11 to 12.5°C by substitution of Ni with 5 at% Cu.
At the same time, transformation heat absorbed and released during forward and reverse martensitic transformation was also increased.
In the martensite phase, the mechanical properties, that is, the stress for reorientation of martensite variants and fracture stress, were increased by 33 and 60 MPa, respectively, whereas the fracture strain was decreased by 1.5%.
In the austenite phase, the critical stress for slip and fracture stress were increased by 62 and 40.9 MPa, respectively, whereas the fracture strain was decreased by 1.2%.
The increase in both stresses was attributed to the solid solution strengthening by substitution of Ni atoms with relatively greater atomic radius of copper (Cu) atoms.
The overall results suggest that the addition of 5 at% Cu in place of Ni in Ti50Ni25Pd25 alloy is very beneficial to improving the mechanical and shape memory properties and increasing the transformation temperatures.
American Psychological Association (APA)
Rehman, Saif ur& Khan, Mushtaq& Khan, A. Nusair& Jaffery, Syed Husain Imran& Ali, Liaqat& Mubashar, Aamir. 2015. Improvement in the Mechanical Properties of High Temperature Shape Memory Alloy (Ti50Ni25Pd25) by Copper Addition. Advances in Materials Science and Engineering،Vol. 2015, no. 2015, pp.1-7.
https://search.emarefa.net/detail/BIM-1053298
Modern Language Association (MLA)
Rehman, Saif ur…[et al.]. Improvement in the Mechanical Properties of High Temperature Shape Memory Alloy (Ti50Ni25Pd25) by Copper Addition. Advances in Materials Science and Engineering No. 2015 (2015), pp.1-7.
https://search.emarefa.net/detail/BIM-1053298
American Medical Association (AMA)
Rehman, Saif ur& Khan, Mushtaq& Khan, A. Nusair& Jaffery, Syed Husain Imran& Ali, Liaqat& Mubashar, Aamir. Improvement in the Mechanical Properties of High Temperature Shape Memory Alloy (Ti50Ni25Pd25) by Copper Addition. Advances in Materials Science and Engineering. 2015. Vol. 2015, no. 2015, pp.1-7.
https://search.emarefa.net/detail/BIM-1053298
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1053298