Ductile fracture prediction of 7A62 high-strength aluminum alloy under a wide range of stress states
Fanlei Min,
Huiping Liu,
Dejing Zhou
Abstract:The modified Gurson-Tvergaard-Needleman (GTN) model is employed to predict the ductile fracture of 7A62 high-strength aluminum alloy under a wide range of stress states. Mechanical tests were conducted on specimens with different stress states within the range of -0.33 to 1.35 stress triaxiality, including tension, notched tension, compression, and shear. The results indicate that at high stress triaxialities (0.8~1.35), the fracture mechanism is intergranular ductile fracture. Under moderate stress triaxialit… Show more
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