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|1. (WO2018042967) SUPERCHARGER IMPELLER|
A supercharger impeller that is provided with: a cylindrical boss part that is arranged around a rotary shaft line; a hub part that connects to the boss part and extends in the radial direction of the rotary shaft line; and a blade part that protrudes from the boss part and the hub part in the radial direction and toward a tip end side in the direction of the rotary shaft line. The supercharger impeller comprises an aluminum first section and a resin second section. The resin second section is provided to at least one part of the blade part or one part of a radial-direction outer circumferential part of the hub part and is joined to the aluminum first section.