METHOD OF OBTAINING WELDED JOINTS OF THERMO-REINFORCED ALUMINUM ALLOYS WITH HIGH ENDURANCE LIMIT

摘要

FIELD: technological processes.;SUBSTANCE: invention can be used in friction welding with mixing of thermo-reinforced aluminum alloys, in particular, 2xxx, 6xxx, 7xxx. After the T6 pre-welding heat treatment, the friction welding is performed with mixing at the tool rotation frequency from 1,000 to 2,500 rpm and the welding speed from 600 to 1,500 mm/min. It is followed by post-welding heat treatment in the form of artificial aging at the same temperature as artificial aging in T6 treatment.;EFFECT: method ensures production of a weld joint with a high fatigue endurance limit without considerable loss of its strength properties.;1 cl, 4 dwg