THE DEPENDENCE OF GRAIN-SIZE ON STRESS DURING DYNAMIC RECRYSTALLIZATION

被引：379
|
作者：
DERBY, B
机构：
[1] Department of Materials, University of Oxford, Oxford, OX1 3PH England, Parks Road
来源：
ACTA METALLURGICA ET MATERIALIA | 1991年 / 39卷 / 05期
关键词：
D O I：
10.1016/0956-7151(91)90295-C
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The steady state grain size during dynamic recrystallisation by grain boundary migration is shown to be simply related to deformation stress for a number of metals and minerals. The data plotted on a scale of grain size (D) divided by Burger's vector (b) against stress (sigma) divided by shear modulus (mu) fills in a remarkably narrow range bounded by loci of form [GRAPHICS] with K = 1 and 10. Models of the dynamic recrystallisation process are developed to show that such a relation can be predicted by considering a dynamic balance between the rate of formation of the deformation substructure and the mean velocity of recrystallising grain boundaries. Hence providing a physical basis for the empirical relation derived from the normalised plot of experimental results.
引用
收藏
页码：955 / 962
页数：8
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