Impact Properties of a Laminated Composite Based on Ultrahigh Carbon Steel and a Ni-Si-Steel

[+] Author and Article Information
S. Lee

Department of Mechanical Engineering, National Central University, Taipei, Taiwan

J. Wadsworth

Research and Development Division, Lockheed Missiles and Space Co., Inc., Palo Alto, CA 94304

O. D. Sherby

Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305

J. Eng. Mater. Technol 114(3), 278-281 (Jul 01, 1992) (4 pages) doi:10.1115/1.2904173 History: Received June 01, 1990; Revised December 26, 1991; Online April 29, 2008


A laminated composite consisting of an ultrahigh carbon steel (UHCS) and an 8Ni-2Si iron interleaf material can be selectively heat treated without carbon diffusion between adjacent layers. This desirable attribute leads to a low ductile-brittle transition temperature (DBTT) of about 163K ( − 110°C) after selective heat treatment. This result is a consequence of notch blunting from the presence of the sharp interlayer boundary and the tough interleaf material. Based on Charpy notch impact results of selectively heat-treated UHCS composites containing 8Ni-2Si iron and other interleaf materials, it is concluded that the DBTT is principally a function of the notch-toughness of the interleaf material.

Copyright © 1992 by The American Society of Mechanical Engineers
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