Accession Number : AD0637217

Title :   THE EFFECT OF STRAIN RATE ON YIELDING IN HIGH-STRENGTH STEELS.

Descriptive Note : Technical rept.

Corporate Author : WATERVLIET ARSENAL N Y BENET LABS

Personal Author(s) : Kendall,David P. ; Davidson,Thomas E.

Report Date : MAY 1966

Pagination or Media Count : 35

Abstract : The effect of strain rates ranging from 0.0001 to 10 in/in/sec. on the yield strengths of several high strength alloy steels is investigated. Quenched and tempered type alloys exhibit two regions of strain rate sensitivity with the strain rate dividing the sensitive and insensitive regions varying from 0.5 to greater than 10 in/in/sec, depending on composition, microstructure and grain size. At the higher rates a power law relationship is found which is consistent with a yielding model involving breakaway of dislocations from solute atmospheres. Maraging steel exhibits a continuous power law strain rate sensitivity over the entire range. (Author)

Descriptors :   (*STEEL, MECHANICAL PROPERTIES), MARAGING STEELS, STRAIN(MECHANICS), YIELD POINT, MICROSTRUCTURE, STRESSES, DEFORMATION

Subject Categories : Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE