Monotonic and Cyclic Fatigue Properties of Automotive Aluminum Alloys

Monotonic and strain-controlled fatigue tests were conducted on 2014-T6, 6061-T6 and 7175 -T73 hand-forgings, 5052-H32 and 6061-T6 sheet, and a 1983/84 production Chevrolet Corvette upper -control-arm-pivot shaft (UCAPS) cold-forged from 5454-H12 and 6061-T4 rolled rod (the 6061 UCAPS was artificially-aged to the -T6 temper, after forging). Various monotonic and cyclic fatigue stress-strain material properties are presented. The responses of the various alloys and product-forms in terms of cyclic hardening or softening are described.