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Strip material made of 80CrV2 was bainitized for a further development of the master blade steels for thin-cutting circular and band saw blades. Severe distortion after tempering of the material led to the search for a metallographic preparation method to identify the microstructural constituents retained austenite and martensite. Mechanical preparation followed by chemical etching was unsuccessful because the surface was too rough to identify the targeted phases under SEM. Performing an electrolytic preparation produced a less rough surface with sharp phase boundaries, which allowed identification at high magnifications under the SEM. Microhardness testing was used to distinguish between the microstructural constituents of retained austenite and martensite.

practical metallography

Comparison of preparation techniques used for the identification of microstructural constituents in the microcrystalline structure of the eutectoid cold-work steel 80CrV2 (1.2235) after austempering