摘要
研究了超导阻隔层用铌片的锻造、轧制和热处理工艺。结果表明:在1100℃加热温度下,采用反复的、大变形量的镦粗工艺锻造铌锭可使心部粗大的等轴晶粒得到充分破碎,过程中发生动态再结晶,细化晶粒;在轧制的过程中,当前面三道次的单道次加工率为25%时,变形深透至板坯心部,再经1000℃×1h退火后,组织发生完全再结晶,晶粒细小而均匀,有利于改善成品铌片的组织和性能。
The forging, rolling and heat treatment processes of niobium sheet for superconducting barrier were studied. The results show that the niobium ingots forged by using repeated and heavy plastic upsetting process at 1100℃ can cause the coarse equiaxed grains in the heart to be fully broken. And dynamic recrystallization occurs during the process, which refines the grains. In roiling process, when the working rate of the single pass is 25% in front three times, the deformation can go into the core of the slab, and after the plate is annealed at 1000℃ for lh, complete recrystallization occurs in the microstructure. Therefore, the grain is fine and uniform. This is beneficial to improving the microstructure and properties of the finished niobium sheet.
出处
《热加工工艺》
CSCD
北大核心
2016年第15期145-147,共3页
Hot Working Technology
关键词
铌片
锻造
轧制
热处理
niobium sheet
forging
rolling
heat treatment
