EXTENSION OF THE HALL-PETCH RELATION TO 2-DUCTILE-PHASE ALLOYS

被引：55

作者：

FAN, Z

TSAKIROPOULOS, P

SMITH, PA

MIODOWNIK, AP

机构：

[1] Department of Materials Science and Engineering, University of Surrey, Guildford, Surrey

来源：

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES | 1993年 / 67卷 / 02期

关键词：

D O I：

10.1080/01418619308207175

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Hall-Petch relation, developed originally for single-phase alloys, has been extended to alloys containing two ductile phases. The extended Hall-Petch relation can separate the contributions from the different kinds of boundary to the overall efficiency of grain and phase boundaries as obstacles to dislocation motion. The overall friction stress and the overall Hall-Petch coefficient for the two-ductile-phase alloys have been derived as functions of the Hall-Petch constants of the different constituent phases and their microstructural parameters. The extended Hall-Petch relation has been applied to alpha-beta Ti Mn alloys, alpha-beta Cu-Zn alloys and alpha-gamma Fe-Cr-Ni stainless steels to evaluate the efficiency of the phase boundaries as obstacles to dislocation motion. It is concluded that phase boundaries are not always the strongest obstacles to dislocation motion as in the case of alpha-gamma Fe-Cr-Ni stainless steels.

引用

页码：515 / 531

页数：17

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