PERCOLATION AND DAMAGE BEHAVIOR IN MATERIALS WITH LIQUID GRAIN-BOUNDARIES

被引：18
作者：
BORDEAUX, F
DANG, MC
BAUDELET, B
机构：
[1] Génie Physique et Mécanique des Matériaux, Unité Associée au CNRS, Institut National Polytechnique de Grenoble, ENSPG, Saint Martin d'Hères, 38402
来源：
JOURNAL OF MATERIALS SCIENCE | 1994年 / 29卷 / 11期
关键词：
D O I：
10.1007/BF01117615
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Percolation of the liquid phase and the damage behaviour in an aluminium alloy with liquid grain boundaries were characterized in experiments performed in tension and compression. The effects of the local stresses (due to grain-boundary sliding and macroscopic stresses) on the percolation of the liquid phase and on cavity development are discussed. It was found that cavities always appear and grow in the intergranular liquid films. It is shown that the presence of liquid films facilitates cavity formation and specimen rupture, for test conditions inducing local stresses higher than a critical stress. In contrast, for local stresses below the critical stress for hole formation, the liquid phase appeared to allow easy accommodation of the deformation without any damage.
引用
收藏
页码：3023 / 3030
页数：8
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