Material of stirring head for friction stir welding and preparation method thereof

Abstract

The invention discloses a material of a stirring head for friction stir welding and a preparation method thereof, and relates to the technical field of the friction stir welding. The material of the stirring head is prepared from W, 10%-20% by weight of Re and 0.3%-1.0% by weight of ZrC. By adding the nano ZrC into the material of the stirring head, the cost can be effectively reduced on the basisof ensuring the mechanical property and the high-temperature wear resistance of the material. According to the preparation method, it is ensured that the added ZrC material can exist in a nanometer form, and stress concentration can be effectively avoided due to good high-temperature stability of the ZrC material.

Description

technical field

[0001] The invention relates to the technical field of friction stir welding, and in particular to a stirring head material for friction stir welding and a preparation method thereof. Background technique

[0002] Friction Stir Welding (FSW) is a new type of solid phase joining technology. During the welding process, the nugget area does not melt, which can avoid the appearance of coarse grain structure and ceramic particle strengthening phase (such as Y 2 o 3 、Al 2 o 3 ) and molten matrix delamination and other issues. Therefore, FSW has unique advantages in welding aluminum, magnesium low melting point materials, ultra-fine grain steel, particle dispersion strengthened steel and titanium alloy. However, the application of FSW in the connection of high melting point materials is limited. One of the main reasons is that the structure of the stirring head material is unstable and the function fails. As the core component of FSW, the stirring head needs to...