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Controlled rolling process for dual phase steels and application to rod, wire, sheet and other shapes
Controlled rolling process for dual phase steels and application to rod, wire, sheet and other shapes
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机译:双相钢的受控轧制工艺及其应用于棒材,线材,薄板和其他形状
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摘要
An improved, energy efficient, hot rolling method for direct production of cold formable dual-phase steel is provided. The steel is heated to completely austenitize it and then continuously hot rolled and cooled down into the ferrite-austenite two phase region to a temperature which is just below the effective Ar.sub.3 temperature. The hot rolled steel is then rapidly quenched to provide an alloy containing strong, tough lath martensite (fibers) in a ductile soft ferrite matrix. The method is particularly useful for providing rods in which form the alloy is capable of being drawn into high strength wire or the like in a cold drawing operation without any intermediate annealing or patenting, and has excellent strength, ductility and fatigue characteristics.
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