NiTi particles reinforced aluminum(NiTip/Al) composite was prepared via friction stir processing,eliminating interfacial reaction and/or elemental diffusion.The NiTip in the composite maintained the intrinsic characteristic of a reversible thermoelastic phase transformation even after heat-treatment.The shape memory characteristic of the NiTip decreased the coefficient of thermal expansion of the Al matrix,and an apparent two-way shape memory effect was observed in the composite.The composite owned a good combination of adjustable damping and thermal physical properties.
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