X-ray line profile analysis of shock-modified compounds

Conference · Wed Jan 01 04:00:00 EST 1986

OSTI ID:5939892

Morosin, B; Graham, R A; Zhang, Y; Stewart, J M

The overall assessment revealed by the extensive studies show that large plastic deformation as evidenced by residual lattice strain is introduced at peak pressures of 7.5 GPa or lower. For various refractory materials, both coherent domain size and residual lattice strain depend strongly on shock conditions (pressure and temperature) and on specific material properties. There is evidence for defect configurations which differ from those produced by more conventional methods. The high residual strain values resulting from the large intense plastic deformation on these normally brittle refractory materials are more typical of those determined in heavily cold worked metals. The behavior is consistent with the unusual nature of the shock deformation process. Such shock-modified materials have been shown to exhibit increased chemical reactivity in a manner that should influence material processing procedures.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA); Maryland Univ., College Park (USA). Dept. of Chemistry
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5939892
• Report Number(s): SAND-85-2412C; CONF-860616-7; ON: DE86003454
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DEFORMATION
EXPLOSIVE FORMING
FABRICATION
LINE BROADENING
MATERIALS WORKING
MECHANICAL PROPERTIES
PLASTICITY
REFRACTORIES
SHOCK WAVES
STRAINS