異種金属接触面の圧縮塑性変形に伴うあれ

概要

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The internal contact surface of polycrystalline metals, as well as their free surface, is roughened during compressive plastic deformation. The effect of the combination of metals on the roughening of the contact surface, however, has hardly been studied. Roughening of the internal contact surface is important not only for the study of friction or bonding during plastic working, but also for the basic study of deformation of polycrystalline metals. In the present study, a rectangular block specimen and another block specimen comprised of different metals are prepared and pressed together. The roughening of the internal contact surface is measured using a stylus instrument. The combinations of copper, aluminium and lead are studied. The microscopic change of surface shape is also observed using a scanning electron microscope. It is found that the roughness of the contact surface of copper is dependent on the hardness of the contacting metals.
1996-12-25