Properties of Al/TiNi composite using porous TiNi fabricated by a self-propagating high temperature synthesis method |
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| Authors: | In-Shup Ahn Sung-Yeal Bae You-Young Kim |
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| Affiliation: | (1) Division of Materials Science and Engineering Engineering Research Institute, Gyeongsang National University, 900 Gajwa-dong, 660-701 Jinju, Korea;(2) Department of Mechanical Engineering, Chinju National University, 150 Chilam-dong, 660-758 Jinju, Korea |
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| Abstract: | In the present study, equi-atomic porous TiNi shape-memory alloys have been successfully prepared by self-propagating high-temperature
synthesis (SHS) using elemental titanium and nickel powders. The porous TiNi alloys thus obtained have an open porous structure
with about 64 vol.% porosity, and the pore size is about 1.8 mm. The effect of preheating temperature on the microstructure
has been investigated. It was found that the pore size increased with increasing preheating temperature. Moreover, the preheating
temperature was shown to have a significant effect on the microstructure of the SHS-synthesized porous TiNi shape memory alloys.
Aluminum was infiltrated into porous TiNi shape-memory alloys and the damping property of Al/TiNi was measured by a vibration
analyzer (FFT analyzer). The specific damping capacity of Al/TiNi composites is 70% that of a pure TiNi ingot. |
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| Keywords: | SHS porous TiNi SMAs Al/TiNi composite damping properties |
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