Effect of Ta Additions on the Microstructure, Damping, and Shape Memory Behaviour of Prealloyed Cu-Al-Ni Shape Memory Alloys
Joint Authors
Saud, Safaa N.
Hamzah, E.
Bakhsheshi-Rad, H. R.
Abubakar, T.
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-01-11
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Information Technology and Computer Science
Abstract EN
The influence of Ta additions on the microstructure and properties of Cu-Al-Ni shape memory alloys was investigated in this paper.
The addition of Ta significantly affects the green and porosity densities; the minimum percentage of porosity was observed with the modified prealloyed Cu-Al-Ni-2.0 wt.% Ta.
The phase transformation temperatures were shifted towards the highest values after Ta was added.
Based on the damping capacity results, the alloy of Cu-Al-Ni-3.0 wt.% Ta has very high internal friction with the maximum equivalent internal friction value twice as high as that of the prealloyed Cu-Al-Ni SMA.
Moreover, the prealloyed Cu-Al-Ni SMAs with the addition of 2.0 wt.% Ta exhibited the highest shape recovery ratio in the first cycle (i.e., 100% recovery), and when the number of cycles is increased, this ratio tends to decrease.
On the other hand, the modified alloys with 1.0 and 3.0 wt.% Ta implied a linear increment in the shape recovery ratio with increasing number of cycles.
Polarization tests in NaCl solution showed that the corrosion resistance of Cu-Al-Ni-Ta SMA improved with escalating Ta concentration as shown by lower corrosion current densities, higher corrosion potential, and formation of stable passive film.
American Psychological Association (APA)
Saud, Safaa N.& Hamzah, E.& Bakhsheshi-Rad, H. R.& Abubakar, T.. 2017. Effect of Ta Additions on the Microstructure, Damping, and Shape Memory Behaviour of Prealloyed Cu-Al-Ni Shape Memory Alloys. Scanning،Vol. 2017, no. 2017, pp.1-13.
https://search.emarefa.net/detail/BIM-1197813
Modern Language Association (MLA)
Saud, Safaa N.…[et al.]. Effect of Ta Additions on the Microstructure, Damping, and Shape Memory Behaviour of Prealloyed Cu-Al-Ni Shape Memory Alloys. Scanning No. 2017 (2017), pp.1-13.
https://search.emarefa.net/detail/BIM-1197813
American Medical Association (AMA)
Saud, Safaa N.& Hamzah, E.& Bakhsheshi-Rad, H. R.& Abubakar, T.. Effect of Ta Additions on the Microstructure, Damping, and Shape Memory Behaviour of Prealloyed Cu-Al-Ni Shape Memory Alloys. Scanning. 2017. Vol. 2017, no. 2017, pp.1-13.
https://search.emarefa.net/detail/BIM-1197813
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1197813