Tungsten heavy alloy: deformation texture and recrystallization of tungsten particles

Sintered tungsten heavy alloy (90W, 7Ni, 3Fe) has been deformed in different ways and heat treated at 800-1100 degreesC. The texture and dislocation density of the tungsten particles were determined as well as the effect of the heat treatment on recovery and recrystallization. A [110] deformation texture of the tungsten particles was found using X-ray diffraction. Formation of dislocation cells and subgrains was found to occur during the heat treatment as well as recrystallization by grain boundary migration. A model for the recrystallization of particles by grain boundary motion in a deformed heavy alloy is presented. (C) 2002 Elsevier Science Ltd. All rights reserved.