Abstract
NiTi alloys with different porosities were obtained by the Spark Plasma Sintering method. The two-way shape memory effect of NiTi alloys with good integrated performance was obtained by the thermal-mechanical cycling training, and it was used to endow NiTi alloy with the self-adaptive behavior. The results show that the porous NiTi alloys with excellent tribological performances and functional properties were obtained. With the storage of oil, the friction coefficient can decrease from 0.391 to 0.041. The self-lubricating mechanism is the formation of a fractionated thin film, and the main wear form is abrasive wear. The lubricating oil inside the specimens with self-adaptive behavior can be squeezed out or stored back, so as to accommodate the lubricating film for better lubrication.
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