Segregation and 2D-compound in a grain boundary:: An exotic behaviour

被引：7
作者：
Creuze, J [1 ]
Berthier, F
Tétot, R
Legrand, B
Tanguy, D
机构：
[1] Univ Paris 11, LEMHE, CNRS, UA 1107, F-91405 Orsay, France
[2] CEA, DECM, SRMP, F-91198 Gif Sur Yvette, France
[3] Ecole Natl Super Mines, CNRS, URA 1884, SMS, F-42023 St Etienne 02, France
来源：
INTERGRANULAR AND INTERPHASE BOUNDARIES IN MATERIALS, IIB98 | 1999年 / 294-2卷
关键词：
segregation; grain boundary; 2D compound; Monte-Carlo simulation; Cu-Ag;
D O I：
10.4028/www.scientific.net/MSF.294-296.423
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Using Monte-Carlo simulations coupling atomic displacements and change in chemical identity in the transmutational ensemble, we have studied the segregation isotherms for the different sites of the Sigma = 5 (310) [001] tilt grain boundary in Cu (Ag) system. Even though the Cu-Ag system is characterised by a strong tendency to phase separation in the bulk, a 2D-ordered compound is obtained in the boundary plane for bulk concentration in the domain of the solid solution. The driving forces for segregation and compound formation are analysed and a statistical model is proposed.
引用
收藏
页码：423 / 426
页数：4
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