Investigations on solid particle erosion behaviour of ferritic steels, austenitic steel and low carbon steel and correlation of erosion data with erosion model

Abstract

Solid particle erosion behaviour of ferritic stainless steels AISI 444 and 439, austenitic stainless steel AISI 304 and low carbon steel AISI 1010 were investigated. Erosion studies of these materials were conducted at room temperature using silica sand of size 150-300 mm. The influence of erosion rates due to different velocities (40-85 m/s) and impingement angle (15-90 ) were experimentally analysed. Erosion efficiency values (0.7-3.6%) indicate that erosion occurs by lip or platelet formation in the material. The present study reveals that the peak in the erosion rate for AISI 444, AISI 439 and AISI 304 occurs at about 30 impingement angle while that for AISI 1010 at about 45 impingement angle. Hutchings' normal erosion model was also examined. Scanning electron microscope studies were conducted to analyse the surface morphology of the tested samples under erosion condition. Variations in microstructure and micro hardness of the material due to solid particle erosion on the materials were also discussed.

The solid particle erosion of pre oxidized high manganese nitrogen stabilized austenitic stainless steel (18Cr-21Mn-0.65N-Fe) at 400 to 700 °C

“…304 austenitic stainless steel shows better performance but the parameters were less extreme compared to the present study [29]. In another study on 304 carried by A. Azad et al [30] with increased velocity and at normal angle of impingement, the erosion rate was higher compared to high manganese nitrogen stabilized austenitic stainless steel. Comparison of erosion rate of less expensive high manganese nitrogen stabilized (Ni-free) austenitic stainless steel with those of expensive nickel containing conventional stainless steel at different impact angle and exposure temperature clearly shows that the present alloy performs better and could be replacement of the existing 316L stainless steel.…”