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
相关论文
共 46 条
  • [41] THEORY AND APPLICABILITY OF A RECRYSTALLIZED GRAIN-SIZE PALEOPIEZOMETER
    TWISS, RJ
    [J]. PURE AND APPLIED GEOPHYSICS, 1977, 115 (1-2) : 227 - 244
  • [42] INSITU STUDIES OF THE DEFORMATION AND DYNAMIC RECRYSTALLIZATION OF RHOMBOHEDRAL CAMPHOR
    URAI, JL
    HUMPHREYS, FJ
    BURROWS, SE
    [J]. JOURNAL OF MATERIALS SCIENCE, 1980, 15 (05) : 1231 - 1240
  • [43] van Liempt JAM, 1935, Z PHYS, V96, P534
  • [44] GRAIN-REFINEMENT AND COARSENING DURING DYNAMIC RECRYSTALLIZATION IN PLAIN CARBON-STEEL
    WEISS, I
    ALVARADO, PJ
    FITZSIMONS, G
    DEARDO, AJ
    [J]. SCRIPTA METALLURGICA, 1983, 17 (06): : 693 - 697
  • [45] WHITE SH, 1973, NATURE, V244, P267
  • [46] EFFECT OF SUBGRAIN SIZE ON HIGH-TEMPERATURE STRENGTH OF POLYCRYSTALLINE ALUMINUM AS DETERMINED BY CONSTANT STRAIN RATE TESTS
    YOUNG, CM
    ROBINSON, SL
    SHERBY, OD
    [J]. ACTA METALLURGICA, 1975, 23 (05): : 633 - 639