Influence of cold-work on the cavitation erosion resistance and on the damage mechanisms in high-nitrogen austenitic stainless steels

The cavitation erosion resistance of an X5CrNi18-10 stainless steel, solution treated at temperatures in the range of 1000–1100 °C for 5–50 mins, was investigated using a piezoceramic vibrating system. The variation of the technological parameters led to changes in the degree of the chemical homogeneity and the grain size of the austenite. Heating at 1050 °C for 25 mins, followed by water quenching, led to an increase in the cavitation erosion resistance of about 2.45 times compared to the samples heated for 50 mins. A significant improvement of the cavitation resistance was obtained for the sample maintained at 1050 °C compared to the samples annealed at 1000 and 1100 °C. It was found that the associated cavitation erosion resistance is improved for finer granulation and for higher degree of chemical homogeneity of the austenite.

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The Influence of Cooling Rate from High Temperature upon the Cavitation Erosion Resistance of the Duplex Stainless Steel X2CrNiMoN22-5-3

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1111.145 ◽

2015 ◽

Vol 1111 ◽

pp. 145-150

Author(s):

Lavinia Madalina Micu ◽

Ion Mitelea ◽

Ilare Bordeaşu ◽

Corneliu Marius Crăciunescu ◽

Mihaela Popescu

Keyword(s):

High Temperature ◽

Cooling Rate ◽

Stainless Steels ◽

Cavitation Erosion ◽

Erosion Resistance ◽

Cold Plastic Deformation ◽

Final Heat Treatment ◽

Slow Cooling ◽

Cavitation Behavior ◽

Cavitation Erosion Resistance

Duplex stainless steels are processed by a process of hot or cold plastic deformation and welding operations. Their properties of the use depend on the type of product (deformed, welded) and to the final heat treatment. The proportion of the basic structural constituents (austenite and ferrite) essentially depends on the chemical composition and cooling rate from high temperatures. This paper shows the that slow cooling in the furnace at the high temperature (1060 ° C) lead to a predominantly austenitic microstructure (cca.75%) while that cooling in the water sudden limited the transformation austenite → ferrite, so that the microstructure will be composed of cca.52% F + 48% A.These modifications by structure justify the changes the occurring with respec ultrasonic erosion cavitation behavior.

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Effect of Solution Treatment on Cavitation Erosion Resistance of Duplex Stainless Steel Surfacing Layers

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.324.21 ◽

2021 ◽

Vol 324 ◽

pp. 21-25

Author(s):

Zi Rui Wang ◽

Ye Feng Bao ◽

Qi Ning Song ◽

Ke Yang ◽

Yong Feng Jiang

Keyword(s):

Stainless Steel ◽

Duplex Stainless Steel ◽

Incubation Period ◽

Stainless Steels ◽

Cavitation Erosion ◽

Erosion Resistance ◽

Solution Treatment ◽

Duplex Stainless Steels ◽

Water Quenching ◽

Cavitation Erosion Resistance

In the present work, the possibility of using solution treatment to improve the cavitation erosion resistance of the duplex stainless steel surfacing layers was discussed. The effect of solution treatment on cavitation erosion resistance of duplex stainless steels was investigated. The results showed that the solution treatment can adjust the ratio of ferrite to austenite, reduce the precipitation content, and make the incubation period longer, leading to an increase in the cavitation erosion resistance of the duplex stainless steel surfacing layers. The sample treated at 900°C and water quenching was shown to have the best resistance to the absorption of the energy produced by cavitation erosion, and hence the best cavitation erosion resistance.

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