Modification of Banding in Dual-Phase Steels via Thermal Processing

Krishnendu Mukherjee, L. S. Thomas, C. Bos, David K. Matlock, John G. Speer

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    The potential to utilize controlled thermal processing to minimize banding in a DP780 steel with 2 wt pct Mn was evaluated on samples processed on a Gleeble® 3500 thermomechanical processing simulator. All processing histories were selected to result in final dual-phase steel microstructures simulating microstructures achievable during annealing of initially cold rolled sheet. Strip samples were processed to evaluate the effects of heating rate, annealing time, annealing temperature, and cooling rate. The degree of banding in the final microstructures was evaluated with standard light optical microscopic techniques. Results are presented to illustrate that the extent of banding depended on control of both heating and cooling rates, and a specific processing history based on a two-stage heating rate can be used to minimize visible banding in selected final heat treated products.
    Original languageEnglish
    JournalMaterials Science Forum
    Volume783-786
    Pages (from-to)1067-1072
    Number of pages6
    ISSN0255-5476
    DOIs
    Publication statusPublished - 2014

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    Keywords

    • Banding
    • Gleeble Simulation
    • Dual Phase Steel

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