Method for the formation of a high-strength and wear-resistant composite layer
AssigneeDaimlerChrysler AG
InventorsJuergen Claus, Reiner Heigel, Markus Kern
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Abstract
A process for forming a high-strength, wear-resistant composite layer on the surface of an aluminum alloy substrate from an applied additive material. The additive material consists of an alloy or powder mixture which contains aluminum, silicon and at least 15% by weight of iron. Irradiating the alloy powder or powder mixture which has been positioned on the surface of the aluminum alloy substrate using a laser melts together with the alloy or powder mixture and a superficial part of the aluminum alloy substrate.
Claims13
A process for forming a high-strength, wear-resistant composite layer on a surface of an aluminum alloy substrate, the process comprising:
- providing an additive material in one of an alloy and a powder mixture to the surface of an aluminum alloy substrate, the additive material including aluminum, silicon, at least 20% by weight of iron, and one of up to 15% by weight of copper and up to 5% by weight of zinc;
- irradiating the additive material on the substrate using a laser so as to create a melt of the additive material and of a surface part of the substrate;
- and
- solidifying the melt using high cooling rates in order to form a homogeneous microstructure.
Dependencies are inferred from the claim text.