DIFFUSION ALONG GRAIN-BOUNDARIES WITH NONEQUILIBRIUM STRUCTURE

被引：30
|
作者：
VALIEV, RZ [1 ]
RAZUMOVSKII, IM [1 ]
SERGEEV, VI [1 ]
机构：
[1] MOSCOW AVIAT MAT INST,MOSCOW 107005,RUSSIA
来源：
PHYSICA STATUS SOLIDI A-APPLIED RESEARCH | 1993年 / 139卷 / 02期
关键词：
D O I：
10.1002/pssa.2211390206
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper is concerned with diffusion in grain boundaries with non-equilibrium structure formed during the interaction of grain boundaries with lattice dislocations and discusses problems of the experimental analysis and evaluation of the grain boundary diffusivity taking into account grain boundary structure recovery and possible development of grain boundary migration. Experimental data are discussed on the acceleration of diffusion in grain boundaries after a non-equilibrium structure has been formed by a specific treatment of the material: after cold pre-straining and after a superfine grained structure has been formed. Data characterizing the grain boundary diffusivity under high-temperature deformation are analyzed. In conclusion, some important theoretical and experimental aspects of diffusion along non-equilibrium grain boundaries are emphasized.
引用
收藏
页码：321 / 335
页数：15
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