Cavitation Erosion Behavior of CrMnN Duplex Stainless Steel in Distilled Water and 3% NaCl Solution
- Resource Type
- Academic Journal
- Authors
- Suzhen LUO; Yugui ZHENG; Wei LIU; Heming JING; Zhiming YAO; Wei KE
- Source
- 材料科学技术学报(英文版) / JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY. 19(4):346-350
- Subject
- Cavitation erosion
CrMnN duplex stainless steel
Microstructure
Ferrite
Austenite
Plastic deformation
- Language
- Chinese
- ISSN
- 1005-0302
The cavitation erosion (CE) behavior of CrMnN ferrite-austenite duplex stainless steel in distilled water and 3% NaCl solution was investigated by using a magnetostrictive-induced CE facility. The damaged surfaces were observed by scanning electron microscope (SEM). It was found that the CE resistance of CrMnN steel was higher than that of 0Cr13Ni5Mo steel. The mass loss rate of CrMnN steel in distilled water was similar to that in 3% NaCl except at the early stage of CE. The failure mode of ferrite phase was brittle fracture, which had adverse effect on the resistance to CE, while the failure of austenite phase was a ductile failure in CrMnN steel. The excellent resistance to CE was related to the good mechanical properties of austenitic phase and the consumption of CE energy by plastic deformation involving slip and twinning.