On the stress distribution around a triple junction
2000; Taylor & Francis; Volume: 80; Issue: 8 Linguagem: Inglês
10.1080/01418610008219080
ISSN0141-8610
AutoresS. X. Li, Dongya Ren, Weiping Jia, C. R. Chen, X. W. Li, Z. G. Wang,
Tópico(s)Fatigue and fracture mechanics
ResumoAbstract The internal and external stresses around a triple junction of copper have been analysed by a disclination model and by a three-dimensional anisotropic finiteelement method respectively. The results indicate that the internal stress depends on whether the triple line is an I-line or a U-line. At the triple line the elastic strain energy concentrations caused by external stresses depend on both the orientations of the component grains and the loading directions. For a loading direction parallel to the triple line, the elastic energy concentration is usually large. For a loading direction perpendicular to the triple line, the elastic energy concentration is complex; in some cases, elastic energy dispersion can occur but, in other cases, the elastic energy concentration is much larger than that with the loading direction parallel to the triple line.
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