Understanding Friction Stir Welding

[摘要] This Technical Memorandum explains the friction stir welding process in terms of two basic concepts: the concentration of deformation in a shear surface enveloping the tool and the composition of the overall plastic flow field around the tool from simple flow field components. It is demonstrated how weld structure may be understood and torque, drag, and lateral tool forces may be estimated using these concepts. Some discrepancies between computations and accompanying empirical data are discussed in the text. This work is intended to be helpful to engineers in diagnosing problems and advancing technology.

[发布日期] 2018-03-01

[学科分类] 机械工程学

[关键词] FRICTION STIR WELDING;ECCENTRICITY;METAL SURFACES;ALUMINUM ALLOYS;WELD STRENGTH;WELDING;AEROSPACE INDUSTRY;DEFORMATION