Mechanical response of pre-cracked zircaloy-4 cladding tubes under biaxial-EDC conditions

二軸EDC条件下におけるジルカロイ-4予亀裂被覆管の機械特性

Li, F.  

Li, F.

Mechanical response of pre-cracked zircaloy-4 tubes under biaxial EDC conditions had been studied. Typical strain ratios under RIA conditions, which varies from 0 to 1, was considered as a key parameter of the experiments. Tubes of three different heat treatment conditions: stress relieved, cold worked and recrystallized, had been used in this research. The results showed that larger strain ratio and larger pre-crack depth lead to lower circumferential strain at failure. Metallographic structure and texture seem to have influence to crack propagation under biaxial EDC conditions.