摘要:
[Problem] The present invention provides a method of forming a metal coating having a microstructure as well as a structural member having a metal coating formed by the method. In particular, the invention provides an advantageous method of forming a metal coating in which minute carbides are uniformly dispersed. [Means for Solving the Problem] The method of forming a metal coating of the present invention has: a first step of cladding a surface of the substrate with metal powder by laser cladding method; and a second step of forming the metal coating having a microstructure by applying a friction stir processing to the cladded region.
摘要:
[PROBLEMS] To provide a method for refining the texture of a surface layer part in a ferrous material, to provide a ferrous material having a microscopic texture which can realize improved properties and prolonged service life of cutting tools, blades, and the like, and to provide a blade with a cutting edge formed by fabricating a microscopic texture region, wherein the expression "refining a texture" means the refinement of base metal crystal grains and the refinement of carbides. [MEANS FOR SOLVING PROBLEMS] A method for refining the texture of a ferrous material, comprising a first step of forming a carbide refined region and a second step of forming a texture refined region. In the first step, the surface layer part in the ferrous material is locally and rapidly heated by a laser beam to form a melt reservoir which is then rapidly solidified to form a carbide refined region. In the second step, the carbide refined region formed in the first step is subjected to a friction agitation process to form a texture refined region.