The invention relates to a corrosive agent and a
corrosion method for displaying a 32CrNi3MoVE
crystal boundary of
alloy steel, which are characterized in that a common chemical product is used as an electrolytic corrosive agent after being simply proportioned, and the 32CrNi3MoVE steel quenched and tempered state original
austenite crystal boundary is clearly displayed by a proper
corrosion method. Chemical reagents used by the corrosive are economical and applicable, the corrosive is composed of
alum,
oxalic acid,
dishwashing liquid,
distilled water and the like which are existing in a laboratory, the proportioning of the corrosive is the key, the
electrolytic corrosion method is simple to operate,
alum can effectively display the
grain boundary,
oxalic acid provides a weak acid environment for
oxidation reduction, and the
corrosion effect is good. The
dishwashing liquid slows down the corrosion rate of weak
acid electrolyte to a metallographic specimen, weakens structure display, and improves the definition of
crystal boundary display. The corroded sample is lightly polished in a
polishing machine, and the corrosive agent ratio and the
electrolytic corrosion method are combined to form an efficient novel corrosion method. The traditional corrosive agent capable of completely replacing saturated
picric acid and a proper amount of detergent and the corrosion method effectively solve the problem of 32CrNi 3MoVE steel quenched and tempered state original
austenite grain boundary display.