Plastic Deformation of Severely Deformational Ag/Ni20 Fiber Composite Contacts during the Preparation Process

Abstract:

Severely deformational Ag/Ni20 fiber composite contacts were used as experimental samples and the scanning electron microscopy as the analytical manner. According to the deformation and distribution of fiber structure in contacts, the plastic problems of severely deformational metal fiber composite contacts during the preparation process were investigated by the creation of five area stress-strain models. The results indicate that both compressive deformation and tensile deformation exist during the preparation of contacts. Stress-strain is most intense in the third area which locates in the head and the corner of contact and the first area which locates in the surface of contact. Both areas suffer tensile deformation with average strain of 80%, and cracks would occur in these areas with the maximum probabilities. Contacts with high qualities could be produced if materials satisfy plastic tensile deformation in these two areas.

Key words:composites; Ag/Ni20 fiber; severe deformation; contact; stress-strain