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Failure Mechanisms |
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· Fracture modes are dependent upon strain rate, homologous temperature (T/Tm), and the material crystallography and microstructure. |
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From:
Courtney, "Mechanical Behavior of Materials," McGraw Hill (1990) |
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· A brittle material fails by rapid crack propagation normal to the tensile axis. In a technical material the crack may propagate through the grains (trans-granular fracture) or along grain boundaries (inter-granular fracture) as illustrated for carbon steel and Armco steel with oxidized grain boundaries. |
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