Shape Memory Effect of TiNi Short Fiber on Mechanical Properties of TiNi/Al6061 Composite
Date Published: 2005-04-11
Paper Number:2005-01-1391
DOI: 10.4271/2005-01-1391
Citation:
Xie, C., Hailat, M., Abedin, Z., Wu, X. et al., "Shape Memory Effect of TiNi Short Fiber on Mechanical Properties of TiNi/Al6061 Composite," SAE Technical Paper 2005-01-1391, 2005, doi:10.4271/2005-01-1391.
A composite of an aluminum matrix reinforced by short TiNi shape memory alloy (SMA) fibers was fabricated. The processing and thermomechanical behaviors of the composite TiNi/Al6061 were investigated experimentally and analytically. Optimal hot-pressing conditions of TiNi/Al6061 processing were identified. The shape memory effect (SME) was activated by prestraining the composite at the temperature between M
s
and A
s
, followed by heating up to A
f
. SME on mechanical properties, such as microhardness, yield stresses of the composite, were investigated. A computational model for the strengthening mechanism of the short fiber metal matrix composite was utilized to analyze SME on yield stress of the composite. Yield stress of the composite as a function of prestrain was predicted numerically and verified experimentally.
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