核容器用钢堆焊层下再热裂纹敏感性的探讨

A DISCUSSION ON THE SENSITIVITY OF UNDERCLAD CRACKING IN NUCLEAR VESSEL STEELS

本文采用MHI拘束试验法对国产核容器用18MnMoNiNb钢堆焊层下再热裂纹的敏感性进行了探讨和初步评价,并提出了减少和防止再热裂纹产生的措施。

The sensitivity of underclad cracking in domestic 18 MnMoNiNb nuclear vessel steels is discussed and preliminary evaluated by means of MHI restraint test. A new method for reducing and preventing the occurrence of reheating crackings is proposed.