Abstract: The present invention relates to a method for producing an RFeB-based magnet, the method including: a base material preparation step of preparing a base material made of a sintered body of an RFeB-based alloy or a hot-deformed body of the RFeB-based alloy; an adhesion substance preparation step of preparing an adhesion substance containing an RHdCu alloy that includes Cu and a heavy rare earth element RHd to be diffused and that has a content of Cu of 20 mass % or more and 40 mass % or less; an adhesion step of adhering the adhesion substance to a surface of the base material; and a heating step of heating the base material to which the adhesion substance has been adhered to a predetermined temperature at which the heavy rare earth element RHd to be diffused is diffused into the base material through a grain boundary of the base material.

Abstract: The present invention relates to a part obtained from an age hardening type bainitic microalloyed steel, a process for producing the part, and the age hardening type bainitic microalloyed steel. In particular, the present invention relates to a part which has been controlled so as to have higher values of strength than conventional parts, a process for producing the part, and the age hardening type bainitic microalloyed steel.

Abstract: The present invention relates to a part obtained from an age hardening type bainitic microalloyed steel, a process for producing the part, and the age hardening type bainitic microalloyed steel. In particular, the present invention relates to a part which has been controlled so as to have higher values of strength than conventional parts, a process for producing the part, and the age hardening type bainitic microalloyed steel.