Accession Number : ADA184617

Title :   Laminated Ferrous Composites Based on Ultrahigh Carbon (UHC) Steels.

Descriptive Note : Final rept. 1 Oct 83-30 Apr 87,

Corporate Author : STANFORD UNIV CA DEPT OF MATERIALS SCIENCE AND ENGINEERING

Personal Author(s) : Sherby,Oleg D ; Wadsworth,Jeffrey ; Kum,Dong W ; Deahn,Glenn ; Whittenauer,Jerry

PDF Url : ADA184617

Report Date : 30 Jun 1987

Pagination or Media Count : 20

Abstract : Ferrous laminated composites based on ultrahigh carbon (UHC) steel have been successfully manufactured by roll bonding below the Al transition temperature. Three unique mechanical property characteristics have been achieved by such lamination. First, remarkably high notch-impact propertiesare achieved in such laminates. This is because notch-blunting occurs by delamination at the good (but not perfect) bond at the interface between laminates. Second, the fatigue properties of UHC steel are improved by lamination for the same reason. The requirements for delamination, however, are much more stringent for fatigue enhancement than for notch-impact enhancement. Third, non-superplastic materials, such as stainless steel, are made superplastic by lamination with fine-grained UHC steel. A ferritic stainless steel was shown to exhibit over 1000% elongation at 800 C when tested as a 15% stainless steel / UHC steel laminated composite.

Descriptors :   *CARBON STEELS, *FERRITES, LAMINATES, NOTCH TOUGHNESS, IMPACT STRENGTH, DUCTILITY, TENSILE PROPERTIES, ELONGATION, FATIGUE(MECHANICS), DEFORMATION, SILICON, CREEP, INTERFACES, STAINLESS STEEL

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE