Method of assembly by diffusion welding of a piece of steel has a high content of carbon with a piece made of steel or nickel alloy has a low carbon content, and the assembly thus obtained.

摘要

Method of assembly by diffusion welding of a piece of steel with high carbon content and to a low content of carbide-producing elements with a part made of steel or nickel alloy having a low carbon content and to a high content of carbide-producing elements, each of the parts comprising a surface to be assembled, in which is placed an intermediate material between the surfaces to be assembled, and the diffusion welding in order to assemble the two parts, and it cools the assembly obtained, characterized in that the intermediate material is an alloy of nickel and iron and / or cobalt with a microstructure austenitic and comprising from 2 to 25% by weight of molybdenum. The assembly obtained by this process.