Fractographic Study of Cracks Produced by Thermal Shocks in 20MnMoNi55 and Comparable Weld Material in Water Environment

摘要

This report gives the results of a fractographic study of cracks produced by thermal shocks in 20MnMoNi55 and comparable weld material in water environment. The basic crack growth mechanism is shown to be by mechanical fatigue, but after some crack growth indications of environmentally assisted cyclic crack growth is seen. (Atomindex citation 16:070587)