对于塑性良好的 NbTi 合金,国内外已进行过很多的研究。在成份均匀性的研究方面,国外有采用多达十几次电弧炉重熔或者多次电子轰击的办法,来获得成份均匀性好的铸锭。显然,这在大规模生产中是不宜采用的,因此,国内一些从事超导材科研究的单位,曾采用粉末冶金的方法来制取成份均匀性良好的合 For ductile NbTi alloy, a lot of researches have been done at home and abroad. In the study of composition uniformity, foreign countries have used up to a dozen times of EAF remelting or multiple electron bombardment methods to obtain good uniformity of ingot. Obviously, this is not suitable for large-scale production. Therefore, some domestic units engaged in the research of superconducting materials have used the powder metallurgy method to prepare a