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RESEARCH PAPERS

Strong Tough HSLA Steels Via Processing and Heat Treating of Cu-Ni-Cb and Cu-Ti-B Compositions

[+] Author and Article Information
M. R. Krishnadev, G. J. Sojka

Department of Metallurgy, Laval University, Quebec, G1K 7P4, Canada

S. K. Banerji

Foote Mineral Company, Exton, Pa. 19341

J. Eng. Mater. Technol 103(3), 207-211 (Jul 01, 1981) (5 pages) doi:10.1115/1.3225002 History: Received March 30, 1981; Online September 15, 2009

Abstract

The paper deals with the development of control-rolled Cu-Ni-Cb HSLA steels with increased section capability for low-temperature environments and Cu-Ti-B HSLA steels for general structural applications as well as for specialized applications requiring quench and temper treatments. Results indicate that based on 2 percent copper additions it is possible to develop HSLA steels with strength level of over 690 MPa with sufficiently low transition temperatures (−40°C to lower than −70°C) and very upper shelf values (170 J to 270 J). In the boron-containing compositions, even in the absence of nickel, strength levels of 480 to 820 MPa with a T. T. of −20°C to lower than −60°C have been realized depending upon the rolling practice and the reheat and quench practice. The practical implications of the study are discussed.

Copyright © 1981 by ASME
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