Abstract
The effects of hot rolling and warm working on mechanical properties and microstructure of Ni-Cu-Cb steel were investigated. In the hot rolled condition optimum strength and toughness resulted from rolling in the upper portion of the austenite plus ferrite phase field. This treatment produced a fine-grained structure consisting of equiaxed and acicular ferrite. Unusually high strength-toughness combinations were realized by warm working the hot rolled steels at 1200°F.
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