Fatigue Strength of Amorphous Alloy Wires

概要

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Amorphous alloy wires in iron-, cobalt- and nickel-based alloy systems have recently attracted strong attention as a new type of engineering materials because of high mechanical strength, good ductility, good corrosive resistance and unique magnetic properties as well as fine geometry with circular cross section. This review aims to present the fundamental characteristics of fatigue strength of iron-, cobalt- and nickel-based amorphous wires by focussing on the following points; (1) the difference in fatigue strength among iron-, cobalt- and nickel-based amorphous wires, (2) the difference in fatigue strength between repetitive bending and tensile loads, (3) the mechanism of the initiation and propagation of fatigue crack, and (4) the influences of stress ratio, testing temperature, cold drawing, structural relaxation and environment on the fatigue strength and fracture morphology. Additionally, the advantage and disadvantage to use the amorphous wire as a reinforcing material for rubber tire have briefly been discussed based on the fundamental characteristics of fatigue strength.
東北大学の論文
1988-03-31