Abstract
Amorphous alloys have superior electro-magnetic properties such as low core loss, high magnetostriction and high saturation induction, so that they have been used as the electro-magnetic materials in a wide variety of magnetic reading heads, magnetic sensors, power transformer cores and so on. Another advantageous property of amorphous alloys is the excellent mechanical property as well as the high registance in the corrosive environments. In order to obtain fundamental data for the mechanical uses, tensile strength of the amorphous alloy ribbons was experimentally examined together with its distribution pattern. Based on the results at some different temperatures, temperature dependence of the tensile strength distribution was analysed by means of Weibull statistics in the present study.Thus we have the following aspects; The strength distribution is independent on the temperature in T≤300°C, but the scatter of the strength becomes distinct at T=400°C in relation to the crystallization. The strength tends to decrease and the scatter becomes small again at T=500°C due to the complete crystallization for all specimens. It was found that the distribution characteristics at T=400°C were well explained by the mixed-mode Weibull distribution consisting of component distributions for amorphous and crystalline specimens.
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