The resistance to cavitation erosion of CrMnN stainless steels

Journal Article · Mon Nov 30 23:00:00 EST 1998 · Journal of Materials Engineering and Performance

DOI:https://doi.org/10.1361/105994998770347396· OSTI ID:320820

Fu, W T ^[1]; Jing, T F; Zheng, Y Z ^[1]; Yang, Y B ^[1]; Yao, M ^[2]

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1. Yanshan Univ., Qinhuangdao (China). Dept. of Materials Engineering
2. Harbin Inst. of Tech. (China)

The resistance to cavitation erosion (CE) was measured using a magnetostrictive device and a rotating disk device for some CrMnN stainless steels (Chinese patent ZL 90 1 02197.0). The microstructural changes in the surface layer before and after CE were analyzed by use of Mossbauer spectra. Results show that the resistance to CE of duplex austenitic-martensitic CrMnN stainless steels is much better than that of ZG0Cr13Ni4-6Mo and ZG0Cr16Ni5Mo steel, which are in common use for hydraulic turbine runners. The metastable austenite and its changes in the process of CE are the key factors why the CrMnN stainless steels have excellent resistance to cavitation erosion.

• OSTI ID: 320820
• Journal Information: Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 6 Vol. 7; ISSN 1059-9495; ISSN JMEPEG
• Country of Publication: United States
• Language: English

Related Subjects

13 HYDRO ENERGY
36 MATERIALS SCIENCE
AUSTENITE
CAVITATION
CHEMICAL COMPOSITION
CORRELATIONS
EROSION
HYDRAULIC TURBINES
MARTENSITE
MICROSTRUCTURE
STAINLESS STEELS