ALUMINIUM ALLOY COMPOSITION FOR LOCAL STRENGTHENING OF ALUMINIUM PISTONS, AND ALUMINIUM PISTON FORMED SO AS TO HAVE LOCAL STRENGTHENING LAYER USING SAID COMPOSITION

摘要

According to the present invention, disclosed is an aluminium alloy composition used in the formation of a local strengthening layer by means of build-up welding in a local position where abrasion resistance and durability are required in an aluminium piston (10); being an aluminium alloy composition for local strengthening of an aluminium piston wherein carbon nanotubes (CNT) are added in an amount of between 1 and 5 wt.% or graphene is added in an amount of between 1 and 5 wt.% to an aluminium alloy of which the main component is aluminium (Al) and which has a silicon content comprising any one of: a silicon (Si) content of between 5 and 8 wt.%, a silicon (Si) content of between 10 and 13 wt.%, or a silicon (Si) content of between 15 and 19 wt.%.