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Controlled rolling process for dual phase steels and application to rod, wire, sheet and other shapes

Patent ·
OSTI ID:866033
 [1];  [2];  [3]
  1. Berkeley, CA
  2. Albany, CA
  3. Laramie, WY
+ Show Author Affiliations
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.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA
DOE Contract Number:
AC03-76SF00098
Assignee:
Regents of University of California (Berkeley, CA)
Patent Number(s):
US 4619714
OSTI ID:
866033
Country of Publication:
United States
Language:
English

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/148/
alloy
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below
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cold
cold drawing
completely
containing
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continuously
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cooled
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effective
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excellent
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provide
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quenched
rapidly
rapidly quenched
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wire