Tensile strength of bronze-processed Nb3Sn compound with titanium addition.
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概要
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The microstructure and tensile behaviour at room temperature of bronze-processed multi filamentary Nb3Sn superconducting composite wire with titanium addition in bronze matrix were investigated after isothermal annealing treatment at 973 and 1073K up to 1720ks. The strength of Nb3Sn compound was evaluated from the tensile behaviour of the wire, volume fraction of each component and stresses carried by ductile components (bronze, niobium and copper) at fracture of Nb3Sn. It was found that the strength of Nb3Sn compound decreased with increasing annealing temperature and time due to an increase in grain size and it was proportional to the inverse root of grain size in both cases of titanium addition and non-addition, which could be expressed by the Hall-Fetch type equation empirically. The strength was reduced by titanium addition.
- The Iron and Steel Institute of Japanの論文
The Iron and Steel Institute of Japan | 論文
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