Effect of heat treatment on the cavitation erosion resistance of stainless steel

Abstract

To evaluate the effect of heat treatment on the cavitation erosion resistance of stainless steel, an experimental investigation is carried out using a cavitating jet test apparatus complying with the ASTM G134 standard. The jet pressure is 30 MPa and the cavitation number is 0.014. Specimens made of stainless steel SUS630 are aged at different temperatures. Prior to cavitation erosion experiment, the mechanical properties of the specimens are obtained through an inverse analysis method in conjunction with the indentation test. The material's cavitation erosion resistance is represented by the reciprocal of the maximum cumulative mass loss rate. The correlation between cavitation erosion resistance and mechanical parameters is pursued. The variation of cumulative mass loss with the exposure time under cavitating jet impact demonstrates that the rise of aging temperature impairs the cavitation erosion resistance of SUS630. The overall cumulative mass loss rate of SUS630 is lower than that of SUS316L. The correlations between cavitation erosion resistance and mechanical parameters are evident. The parameter of microhardness exhibits the most explicit relevance with respect to the cavitation erosion resistance.

Silt erosion and cavitation impact on hydraulic turbines performance: An in-depth analysis and preventative strategies

“…Studies conducted by Peng et al [ 78 ] which looked at SUS630 steel exposed to various heat treatments to change steel characteristics, verified the relationship between erosion rate and such material attributes. Many correlations and models have been discussed so far, in which numerous relevant variables have been considered by various investigators to predict the actual pattern of erosion due to sediment and cavitation as indicated in Eqs.…”

“…L is the fluid's density. Peng et al [ 78 ] tested martensitic SUS630 stainless steel for cavitation erosion problems. It was found that yield stress and elastic modulus increased with ageing annealing at 480 °C–620 °C and solution annealing at 1040 °C, improving cavitation erosion resistance.…”

Cavitation erosion behavior of microwave-processed Ni–40Cr3C2 composite clads: A parametric investigation using ultrasonic apparatus

“…9 Furthermore, ASTM G32-17 (indirect method) gives that provision of testing the combined result for cavitation, corrosion, and silt erosion by just adding acid or base and silt particle to the test liquid. 62 However, the indirect method limitation is the additions of other mandatory test parameters, i.e. standoff distance (SOD) and immersion depth (IMD) of the specimen.…”

Cavitation Erosion Resistance Influence of Material Properties

“…Undoubted effect of hardness on CER contributed to searching for methods of increasing material hardness or surface hardness. The most popular is thermal or thermochemical treatment, especially nitriding [31], [49], [50], which increase hardness and also improves other mechanical properties. The other way for increasing surface hardness is deposition of hard coatings (e.g.…”