摘要
A 3mm-thick 6061-T6 aluminum alloy sheet was friction stir welded in order to examine its friction stir welding (FSW) characteristics. The experimental results indicate that the FSW clearly softens the aluminum alloy sheet, thus the tensile properties of the joints are lower than those of the base material, and the ultimate strength efficiency of the joints is only up to 66%. The FSW parameters significantly affect the tensile properties of the joints, and the range of the welding parameters that can be used to form a good joint is relatively narrow. All the FSW joints fracture on the retreating side of the weld center. When the revolutionary pitch is smaller than a certain critical value, the fracture locations are distant from the weld center. Otherwise, the fracture almost occurs in the weld center.
A 3mm-thick 6061-T6 aluminum alloy sheet was friction stir welded in order to examine its friction stir welding (FSW) characteristics. The experimental results indicate that the FSW clearly softens the aluminum alloy sheet, thus the tensile properties of the joints are lower than those of the base material, and the ultimate strength efficiency of the joints is only up to 66%. The FSW parameters significantly affect the tensile properties of the joints, and the range of the welding parameters that can be used to form a good joint is relatively narrow. All the FSW joints fracture on the retreating side of the weld center. When the revolutionary pitch is smaller than a certain critical value, the fracture locations are distant from the weld center. Otherwise, the fracture almost occurs in the weld center.
出处
《中国有色金属学会会刊：英文版》
CSCD
2005年第S2期43-46,共4页
Transactions of Nonferrous Metals Society of China
基金
ProjectsupportedbytheCenterofExcellenceforAdvancedStructuralandFunctionalMaterialsDesign
