期刊
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
卷 20, 期 5-6, 页码 375-379出版社
ELSEVIER SCI LTD
DOI: 10.1016/S0263-4368(02)00035-5
关键词
powder metallurgy; tungsten heavy metal; particle composite; recrystallization
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.
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