A Study on Statistical Fatigue Properties of Multilayer Composites Made by Fe78B13Si9 Amorphous Alloy
Tatsuo SAKAI, Toshiki FUJIKAWA, Kazuko TAKEUCHI and Masashi OHUE
Abstract:Amorphous alloy ribbons have no crystalline structure and they have superiority in the electromagnetic and mechanical properties. Due to their useful electromagnetic property, the amorphous ribbons are widely used, nowadays, in the various products such as core of current transformers and electric motors. But we have a difficulty that the thickness of the amorphous ribbon is restricted within a certain value in order to realize the rapid quenching. Thus amorphous ribbons must be put together to some extent in order to use as mechanical components. In this study, a number of thin ribbons of Fe78B13Si9 amorphous alloy are piled up and bonded by an adhesive. Statistical fatigue properties of such multilayer composites are examined by performing fatigue tests and fatigue mechanisms are discussed. Key Words:Fe78B13Si9 amorphous alloy, Multilayer composites, Fatigue strength, S-N property, Fatigue life distribution, P-S-N property, Fractography