The effect of triple junctions on grain boundary motion and grain microstructure evolution

被引:41
作者
Gottstein, G
Sursaeva, V
Shvindlerman, LS
机构
[1] Rhein Westfal TH Aachen, Inst Met & Met Phys, D-52056 Aachen, Germany
[2] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Moscow Distr, Russia
关键词
grain boundary; mobility; triple junction; Von Neumann-Mullins relation;
D O I
10.1023/A:1008721426104
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The theory of steady state motion of grain boundary sytems with triple junctions and the main features of such systems are considered. A special technique of in-situ observations and recording of triple junction motion is introduced, and the results of experimental measurements on Zn tricrystals are discussed. It is shown, in particular, that the described method makes it possible to measure the triple junction mobility. It was found that the measured shape of a moving half-loop with a triple junction agrees with theoretical predictions. A transition from triple junction kinetics to grain boundary kinetics was observed. This means that triple junctions can drag boundary motion. It is demonstrated that the microstructural (granular) evolution is slowed down by triple junction drag for any n-sided grain. The second consequence pertains to six-sided grains. For a boundary system with dragging triple junctions there is no unique dividing line between vanishing and growing grains with respect to their topological class anymore, like n = 6 in the Von Neumann-Mullins relation.
引用
收藏
页码:273 / 283
页数:11
相关论文
共 11 条
[1]   COMPUTER-SIMULATION OF GRAIN-GROWTH .1. KINETICS [J].
ANDERSON, MP ;
SROLOVITZ, DJ ;
GREST, GS ;
SAHNI, PS .
ACTA METALLURGICA, 1984, 32 (05) :783-791
[2]  
CZUBAYKO U, UNPUB ACTA MAT
[3]  
Fradkov V. E., 1988, STRUCTURE PROPERTIES, P213
[4]   COMPUTER-SIMULATION OF GRAIN-GROWTH IN 2 DIMENSIONS [J].
FRADKOV, VE ;
SHVINDLERMAN, LS ;
UDLER, DG .
SCRIPTA METALLURGICA, 1985, 19 (11) :1285-1290
[5]  
Galina A V, 1987, PHYS MET METALLOGR, V63, P165
[6]  
Gibbs J. W., 1928, COLLECTED WORKS
[7]   Triple junction dragging and Von Neumann-Mullins relation [J].
Gottstein, G ;
Shvindlerman, LS .
SCRIPTA MATERIALIA, 1998, 38 (10) :1541-1547
[8]   STATISTICAL-THEORY OF 2-DIMENSIONAL GRAIN-GROWTH .2. KINETICS OF GRAIN-GROWTH [J].
LUCKE, K ;
HECKELMANN, I ;
ABBRUZZESE, G .
ACTA METALLURGICA ET MATERIALIA, 1992, 40 (03) :533-542
[9]   2-DIMENSIONAL MOTION OF IDEALIZED GRAIN BOUNDARIES [J].
MULLINS, WW .
JOURNAL OF APPLIED PHYSICS, 1956, 27 (08) :900-904
[10]  
SHVINDLERMAN LS, 1997, RECRYSTALLIZATION RE, P255