Abstract
Stress corrosion cracking (SCC) susceptibility of 316Ti SS in supercritical water (SCW) was evaluated by Slow Strain Rate Tensile (SSRT) testing at four different temperatures from 380°C up to 650°C, at a pressure of 25MPa and a strain rate of 9.2×10−7s−1. The effect of dissolved oxygen (DO) on the SCC of 316Ti was investigated by changing the DO concentration from 0 up to 2000ppb. High purity argon was chosen as the comparative blank test environment. The results obviously revealed the effect of temperature and DO on the SCC susceptibility of 316Ti SS. Transgranular cracking was found on both fracture and gauge surfaces on the specimens.
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