Surface-alloyed cylindrical, partially cylindrical or hollow cylindrical component
AssigneeVAW Aluminium AG
InventorsJosef Franz Feikus, Alexander Fischer
Life of this patent
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Abstract
A surface-alloyed cylindrical, partly cylindrical or hollow cylindrical component consists of an aluminium matrix casting alloy (1) and a precipitation area (3) extending as far as the surface of the component (3) and consisting of an aluminium base alloy with precipitated hard phases. A eutectic area (2) (hereafter: “transition area”) which is supersaturated by primary hard phases is present between the matrix (1) and the precipitation area (3) and the increase in hardness from the matrix (1) to the component surface (3) is gradual.
Claims7
A surface-alloy cylindrical, partly cylindrical or hollow cylindrical structural comprising:
- an aluminum matrix;
- and
- a precipitation zone including an aluminum based alloy with precipitated hard phases, said precipitation zone extending as far as the surface of the structural member, wherein between the matrix and the preciptation zone there is an euctectic transition zone supersaturated by primary hard phases, and wherein the hardness increases stepwise from the matrix to the surface of the structural member on the preciptation zone.
Dependencies are inferred from the claim text.