Study of the formation of adiabatic shear bands in mild steel under dynamic loading

Conference · Fri Jan 01 04:00:00 EST 1982

OSTI ID:5420711

Costin, L S

The conditions of strain and temperature under which adiabatic shear bands form were examined using a torsional Kolsky (split-Hopkinson) bar apparatus. Thin walled tubular specimens of 1018 cold rolled steel were tested at an approximately constant strain rate in one of two strain rate regimes. In addition, the initial test temperature was varied from 173/sup 0/K to 300/sup 0/K. The total specimen strain was varied from test to test in order to determine the strain at which localized deformation begins at a given strain-rate and temperature. Using a series of fine lines scribed along the inner surface of the tube parallel to its axis, the strain distribution along the gage length of the specimen was determined by post-test examination. In this way it was determined whether the deformation was homogeneous or localized into a shear band.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5420711
• Report Number(s): SAND-81-1708C; CONF-820516-1; ON: DE82010077
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
DYNAMIC LOADS
IRON ALLOYS
IRON BASE ALLOYS
MECHANICAL PROPERTIES
SHEAR PROPERTIES
STEELS
STRAINS
TEMPERATURE DEPENDENCE