abstract |
PROBLEM TO BE SOLVED: To provide a metal material excellent in bonding strength after friction stir welding. A metal material according to an embodiment of the present invention is a metal material for friction stir welding, and the metal material is an aluminum material of A1050 defined in JIS H4000, and an average of the aluminum materials The particle size is 0.95 μm or more and less than 2.3 μm. Further, the metal material according to another embodiment of the present invention is a metal material for friction stir welding, and the metal material is an aluminum material of A6N01 defined in JIS H 4000, and the average particle of the aluminum material The diameter is 1.76 μm or less. [Selection] Figure 3 |