The tensile deformation and fracture characteristics of two ship plate steels and one low-alloy steel were determined from 25°C (77°F) to -196°C (-321°F). Both smooth and notched specimens were used and the true stress-natural strain data conform to the relation σ=σ
ºδ
n in the strain interval 0.075 < δ < 0.30. The strength coefficient σ
º was to increase regularly with decreasing temperature, whereas the strain hardening exponent η of the ship steels dropped to a relatively low value at low temperature.
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| Number of Pages : | 15 |
| Published : | 1957 |
