Aging susceptibility of retained and epitaxial ferrite in dual-phase steels

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This work was supported by the National Science Foundation under Grant No. DMR79-25378.

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Aging Susceptibility of Retained and Epitaxial Ferrite in Dual-Phase Steels D. A. KORZEKWA, D. K. MATLOCK, and G. KRAUSS The mechanical behavior of dual-phase steels is strongly influenced by the composition and structure of the majority ferrite phase.l Low temperature aging of ferrite in dualphase steels has been shown to affect the mechanical properties, 2 and the effects of processing conditions on the aging susceptibility of ferrite have been studied to a limited extent. 3 Two different types of ferrite may be identified in most intercritically annealed dual-phase steels: the ferrite which is present at the intercritical annealing temperature, referred to as