Effect of ta additions on the microstructure, damping, and shape memory behaviour of prealloyed Cu-Al-Ni shape memory alloys
The influence of Ta additions on the microstructure and properties of Cu-Al-Ni shapememory 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-2.0wt.% T...
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Online Access: | http://eprints.utm.my/id/eprint/74922/1/EHamzah_EffectofTaAdditionsontheMicrostructure.pdf http://eprints.utm.my/id/eprint/74922/ https://www.scopus.com/inward/record.uri?eid=2-s2.0-85029395630&doi=10.1155%2f2017%2f1789454&partnerID=40&md5=4f7b28d54a07926e1863aa85f3af4e79 |
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my.utm.749222018-03-22T10:57:57Z http://eprints.utm.my/id/eprint/74922/ Effect of ta additions on the microstructure, damping, and shape memory behaviour of prealloyed Cu-Al-Ni shape memory alloys Saud, S. N. Hamzah, E. Bakhsheshi Rad, H. R. Abubakar, T. TJ Mechanical engineering and machinery The influence of Ta additions on the microstructure and properties of Cu-Al-Ni shapememory 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-2.0wt.% 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 2.0wt.% 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. Hindawi Limited 2017 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/74922/1/EHamzah_EffectofTaAdditionsontheMicrostructure.pdf Saud, S. N. and Hamzah, E. and Bakhsheshi Rad, H. R. and Abubakar, T. (2017) Effect of ta additions on the microstructure, damping, and shape memory behaviour of prealloyed Cu-Al-Ni shape memory alloys. Scanning, 2017 . ISSN 0161-0457 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85029395630&doi=10.1155%2f2017%2f1789454&partnerID=40&md5=4f7b28d54a07926e1863aa85f3af4e79 |
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TJ Mechanical engineering and machinery Saud, S. 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 |
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The influence of Ta additions on the microstructure and properties of Cu-Al-Ni shapememory 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-2.0wt.% 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 2.0wt.% 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. |
format |
Article |
author |
Saud, S. N. Hamzah, E. Bakhsheshi Rad, H. R. Abubakar, T. |
author_facet |
Saud, S. N. Hamzah, E. Bakhsheshi Rad, H. R. Abubakar, T. |
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Saud, S. N. |
title |
Effect of ta additions on the microstructure, damping, and shape memory behaviour of prealloyed Cu-Al-Ni shape memory alloys |
title_short |
Effect of ta additions on the microstructure, damping, and shape memory behaviour of prealloyed Cu-Al-Ni shape memory alloys |
title_full |
Effect of ta additions on the microstructure, damping, and shape memory behaviour of prealloyed Cu-Al-Ni shape memory alloys |
title_fullStr |
Effect of ta additions on the microstructure, damping, and shape memory behaviour of prealloyed Cu-Al-Ni shape memory alloys |
title_full_unstemmed |
Effect of ta additions on the microstructure, damping, and shape memory behaviour of prealloyed Cu-Al-Ni shape memory alloys |
title_sort |
effect of ta additions on the microstructure, damping, and shape memory behaviour of prealloyed cu-al-ni shape memory alloys |
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Hindawi Limited |
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2017 |
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http://eprints.utm.my/id/eprint/74922/1/EHamzah_EffectofTaAdditionsontheMicrostructure.pdf http://eprints.utm.my/id/eprint/74922/ https://www.scopus.com/inward/record.uri?eid=2-s2.0-85029395630&doi=10.1155%2f2017%2f1789454&partnerID=40&md5=4f7b28d54a07926e1863aa85f3af4e79 |
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