| 摘要 |
The purpose of the present invention is to provide, in friction-stirring joining of oxide-dispersion-strengthened platinum, a friction-stirring processing method that, through control of the organization of the welding site, can further improve high-temperature strength in a welding area as compared to a case where joining is performed by melt welding or band forge welding, or a friction-stirring processing method that can effectively reform the surface of oxide-dispersion-strengthened platinum. This friction-stirring processing method for oxide-dispersion-strengthened platinum comprises the following: a preparation step in which work pieces (1A, 1A') formed of oxide-dispersion-strengthened platinum are readied and a contact joining surface (2A) that causes the work pieces to be mutually in contact or substantially in contact is designated as a processing region; a friction-stirring step in which the processing region is friction-stirred with a rotating tool (3) to produce a malleable region in the processing region; a solidification step in which the malleable region is allowed to solidify to form a processed section; and a heat treatment step in which the processed section is heated to at least 600°C and to at least the temperature of the tool used in the friction-stirring step. |
