Display method for microstructure of high manganese steel
Two methods for displaying the microstructure of high manganese steel with different manganese contents were introduced.Using oxalic acid+nitric acid+sodium metabisulfite+anhydrous ethanol solution as the corrosion solution,wear-resistant high manganese steel with a manganese content of 11%to 14%was corroded at room temperature,resulting in clear,complete and brightly colored microstructure morphology.The composite method of nitric acid+anhydrous ethanol solution and hydrochloric acid+anhydrous ethanol solution was used to corrode high manganese steel in ultra-low temperature environments with a mass fraction of manganese elements ranging from 22%to 28%,and clear microstructure morphology could be obtained.
high manganese steelmicroscopic organizationcorrosion solutionaustenitemicrostructure
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