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Title: High strength, low carbon, dual phase steel rods and wires and process for making same

Abstract

A high strength, high ductility, low carbon, dual phase steel wire, bar or rod and process for making the same is provided. The steel wire, bar or rod is produced by cold drawing to the desired diameter in a single multipass operation a low carbon steel composition characterized by a duplex microstructure consisting essentially of a strong second phase dispersed in a soft ferrite matrix with a microstructure and morphology having sufficient cold formability to allow reductions in cross-sectional area of up to about 99.9%. Tensile strengths of at least 120 ksi to over 400 ksi may be obtained.

Inventors:
 [1];  [2]
  1. Berkeley, CA
  2. Campbell, CA
Issue Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
OSTI Identifier:
865990
Patent Number(s):
4613385
Assignee:
Regents of University of California (Berkeley, CA)
Patent Classifications (CPCs):
C - CHEMISTRY C21 - METALLURGY OF IRON C21D - MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
strength; carbon; dual; phase; steel; rods; wires; process; ductility; wire; bar; rod; provided; produced; cold; drawing; desired; diameter; single; multipass; operation; composition; characterized; duplex; microstructure; consisting; essentially; strong; dispersed; soft; ferrite; matrix; morphology; sufficient; formability; allow; reductions; cross-sectional; 99; tensile; strengths; 120; ksi; 400; obtained; steel composition; steel rod; consisting essentially; tensile strength; carbon steel; structure consisting; steel wire; composition characterized; cold drawing; dual phase; desired diameter; phase dispersed; phase steel; pass operation; structure consist; /148/

Citation Formats

Thomas, Gareth, and Nakagawa, Alvin H. High strength, low carbon, dual phase steel rods and wires and process for making same. United States: N. p., 1986. Web.
Thomas, Gareth, & Nakagawa, Alvin H. High strength, low carbon, dual phase steel rods and wires and process for making same. United States.
Thomas, Gareth, and Nakagawa, Alvin H. Wed . "High strength, low carbon, dual phase steel rods and wires and process for making same". United States. https://www.osti.gov/servlets/purl/865990.
@article{osti_865990,
title = {High strength, low carbon, dual phase steel rods and wires and process for making same},
author = {Thomas, Gareth and Nakagawa, Alvin H},
abstractNote = {A high strength, high ductility, low carbon, dual phase steel wire, bar or rod and process for making the same is provided. The steel wire, bar or rod is produced by cold drawing to the desired diameter in a single multipass operation a low carbon steel composition characterized by a duplex microstructure consisting essentially of a strong second phase dispersed in a soft ferrite matrix with a microstructure and morphology having sufficient cold formability to allow reductions in cross-sectional area of up to about 99.9%. Tensile strengths of at least 120 ksi to over 400 ksi may be obtained.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {1}
}

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