102 摩擦攪拌プロセスによる7075Al合金の組織制御と機械的性質(超塑性と材料および造形法)

概要

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Friction stir welding technique possesses a lot of features such as the formation of a fine-grained microstructure in the welded zone. Therefore, the friction stir welding process is expected to be a microstructure refinement method for crystalline materials. Many researchers have been paid attention to this as a microstructure control method for variety of alloys ; it is now called Friction Stir Processing (FSP). We have applied this joining method to 7075-T6 alloy as a novel microstructure control method. It was found that initial microstructure was altered considerably by the process; in particular, grains in the stirred zone were refined to very fine and equiaxial ones. We discussed a probable mechanism of the microstructure evolution with the present experimental results.
一般社団法人日本機械学会の論文
2007-09-28