METALLISK MULTIFASEMATERIALE OG FREMGANGSMÅDE TIL FREMSTILLING HERAF

摘要

A method for manufacturing of a metallic multiphase material comprises providing (210) of a powder of an initial metallic multiphase material. The material comprises a metal matrix in which carbides are embedded. The material has a carbon content over 0.6 % by weight. The powder is placed (220) in an oxygen-free environment and melted (230) locally in a first portion by exposing the first portion of the powder of the initial metallic multiphase material to an energy beam during a first time period. The local melting allowing at least a part of an oxygen content of the melted initial metallic multiphase material to react with carbon of the melted initial metallic multiphase material into oxides of carbon. This gives a final metallic multiphase material in the first portion that has an oxygen content less than 50 ppm by weight. The final metallic multiphase material is solidified (240).