Abstract
In order to evaluate the influence of grain size on the strength and flux pinning force of the Nb3Sn compound, the microstructure, tensile behaviour and flux pinning force of the bronze-processed Nb3Sn superconducting composite materials were investigated under various heat treatments. It was found that the strength of the Nb3Sn layer has a strong dependency on the grain size and it can be expressed by the Hall-Petch type relation. The flux pinning force was roughly proportional to the inverse grain size, agreeing with the results of former investigations.
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Ochiai, S., Uehara, T. & Osamura, K. Tensile strength and flux pinning force of superconducting Nb3Sn compound as a function of grain size. J Mater Sci 21, 1020–1026 (1986). https://doi.org/10.1007/BF01117389
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DOI: https://doi.org/10.1007/BF01117389