SCC behaviour of laser powder bed fused 316L stainless steel in high-temperature water at 288 °C
Zaiqing Que, Tuomas Riipinen, Sneha Goel, Alejandro Revuelta, Timo Saario, Konsta Sipilä, Aki Toivonen
Abstract
Stress corrosion cracking (SCC) behaviour of laser powder bed fused stainless steel 316L was evaluated with U-bend testing in oxygenated high-temperature water at 288 °C. The effects of solution annealing temperature (1066, 1150 and 1200 °C), surface finish (as-built and wire cut) and the sample orientations on the SCC behaviour were studied. The results show that a higher annealing temperature introduces further recrystallization, coarsening of the oxide inclusions and a decrease in resistance to SCC. A wire cut surface leads to a higher susceptibility to SCC than the as-built surface. Sample orientation was found not to affect the SCC susceptibility.