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Fracture Mechanisms in Metals 227
FIGURE 5.8 Cup and cone fracture in an austenitic stainless steel. Photographs courtesy of P.T. Purtscher.
Taken from Purtscher, P.T., ‘‘Micromechanisms of Ductile Fracture and Fracture Toughness in a High Strength
Austenitic Stainless Steel.” Ph.D. Dissertation, Colorado School of Mines, Golden, CO, 1990.
where
2 φ 2 + 3
A D = exp ε
(3 + ) φ 1
B = (1 + FA − )( ) 1
D
and ε is the total strain, integrated from the undeformed configuration to the current state.
1
