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

1 July 1992

journal article
Published by ASME International in Journal of Engineering Materials and Technology

Vol. 114 (3) , 278-281
https://doi.org/10.1115/1.2904173

Abstract

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.

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