ジルコニウム合金管の冷間ピルガ圧延における
加工性評価方法の提案

抄録

The workability in cold pilgering of zirconium-based alloy tube was investigated. In this study, a compression test was proposed as an evaluation method of cold workability. The compression test results showed the effect of heat treatment in the fabrication process as well as the texture of tube on the cold workability of zircaloy-4 tube shell. The cold pilgering test result ascertained that the reduction in height of the circumferential-direction specimen of the tube shell at the initiation of crack in the compression test was a good indication of cold workability. The numerical analysis results of cold pilgering proved the validity of the compression test as an evaluation method of cold workability.