Strain-Rate Sensitivity and Energy Absorption of Hot-Rolled Sheets of DQSK, USS EX-TEN F50, and USS Dual Phase 80 Steels

Format:

Conference/Event

Author/Creator:

Skena, C. C., author.

Conference Name:

SAE International Congress & Exposition (1981-02-23 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1981

Summary:

AbstractThe effect of strain rate ε̇ on the tensile properties of steel sheets indicate that strength increased with increasing ε̇ whereas total elongation, work-hardening exponent, and energy absorption went through minima in the ε̇ range of 0.01 to 0.20 sec-1. Possibly sheet formability may improve with increasing e above the minima. The ε̇ hardening exponents (M values) were shown to be highest at low strains but most conveniently determined at maximum load at which the DQSK, EX-TEN F50, and Dual Phase 80 steels had M values of 0.011, 0.006, and 0,008, respectively. Post uniform elongation was found to vary directly with M value. Energy absorption by the Dual Phase 80 steel was significantly greater than that of the DQSK and EX-TEN F50 steels, suggesting that the highly formable Dual Phase 80 steel can be used advantageously in energy-management systems to increase occupant protection in automobile crashes

Notes:

Vendor supplied data

Publisher Number:

810235

Access Restriction:

Restricted for use by site license