Determination of the shear strength of shock compressed 6061-T6 aluminum

Conference · Tue Jan 01 04:00:00 EST 1980

OSTI ID:5256477

Asay, J R; Chhabildas, L C

The strength of 6061-T6 aluminum was assessed over the stress range of 8-40 GPa using velocity interferometry to measure reloading and unloading profiles from the initial shocked state. These results show that the shear stress which can be supported in the shocked state increases by about a factor of five over this range. This observation is in agreement with previous investigations. However, an important new observation is that a substantial increase in shear stress occurs during reloading, resulting in a well-defined elastic precursor. This result indicates a significant departure from the elastic-plastic model and suggests that softening occurs during initial shock compression.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5256477
• Report Number(s): SAND-80-1300C; CONF-800641-6
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM BASE ALLOYS
COMPRESSION STRENGTH
MECHANICAL PROPERTIES
PRESSURE DEPENDENCE
SHEAR
STRESSES
TENSILE PROPERTIES