一种超导铌板制备工艺研究

本文对RRR300超导铌板制备工艺进行了探究,设计了包括锻造工艺、轧制工艺、热处理工艺在内的3个工艺方案,并在900℃/60 min和950℃/60 min两个成品热处理工艺条件下,测试了RRR300超导铌板的RRR值、微观组织与机械性能。最终确定了工艺方案2为最优工艺,可制备出RRR值300,硬度≤50HV、抗拉强度在140~175 MPa、屈服强度确定在50~75 MPa、延伸率≥50%、晶粒度在G=5.5~6.0级的超导铌板,并可应用于工业化生产。

Research on Processing Technique of Superconducting Niobium Sheet

This article researched on processing technique of RRR300 superconducting niobium sheet,designing three process schemes including forging,rolling and heat treatment.In conditions of 900 ℃/60 min and 950 ℃/60 min heat treatment,we test the RRR300 superconducting niobium shee's RRR300 value,microstructure and mechanical property.Scheme 2nd is confirmed optimum process at last.It can manufacture RRR300 value ＞ 300,hardness ≤ 50HV,tensile strength 140 ～ 175 MPa,yield strength 50 ～75 MPa,elongation ≥50％ and G =5.5 ～ 6.0 RRR300 superconducting niobium shee.It can be applied to industrial production.