In situ NiTi/Nb(Ti) composite

• In situ NiTi/Nb(Ti) composites were fabricated.
• The transformation temperature was affected by the mixing Ti:Ni atomic ratios.
• The NiTi component became micron-scale lamella after forging and rolling.
• The composite exhibited high strength and high damping capacity.

This paper reports on the creation of a series of in situ NiTi/Nb(Ti) composites with controllable transformation temperatures based on the pseudo-binary hypereutectic transformation of NiTi–Nb system. The composite constituent morphology was controlled by forging and rolling. It is found that the thickness of the NiTi lamella in the composite reached micron level after the hot-forging and cold-rolling. The NiTi/Nb(Ti) composite exhibited high damping capacity as well as high yield strength.

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