几种Bi系高温超导用包套银合金的力学性能

为开发新型Bi系高温超导用包套银合金，使其具有良好的机械性能，制备了6种二元银合金，分别为AgAl，AgGa，AgTb，AgDy，AgTi和AgSb。研究了这些合金经过几种不同条件退火处理后的室温拉伸性能。结果表明，AgTb，AgDy，AgTi和AgSb合金在空气气氛中，高温长时处理后仍保持较高强度和较大的延伸率，这对高温超导体的加工和带材的力学性能的提高十分有利。而AgAl和AgGa合金经空气退火处理后，延伸率明显下降，这不利于高温超导体的加工；通过对几种银合金的力学性能的研究，为研制新型Bi系高温超导带材包套材料提供了依据。

Mechanical Properties of Several Sheath Silver Alloys Used in BSCCO Tapes

Several binary silver alloys, including AgSb, AgTb, AgDy, AgGa, AgTi and AgAl, have been investigated in order to develop new sheath alloys used for the BSCCO tapes. The mechanical properties of these alloys have been measured, including the tensile strength and strain. The results show that the Ag-Sb and Ag-Ti samples are the best candidate materials among the six alloys and have the highest strain and the highest tensile strength, respectively. The AgTb and AgDy alloys also have good properties while AgGa and AgAl alloys can not be used as sheathed materials due to their lower strains.