Abstract
Two mechanical processes of surface layer (SL) modification were performed on Vanadis 8 tool steel: grinding (G) and hard turning (HT). This steel is classified as powder metallurgy (P/M) high-alloyed tool steel. Heat treatment was carried out in vacuum furnaces with gas quenching until hardness of 64 ±1 HRC was achieved. Surface geometrical structures (SGS), microstructures, residual stress levels and wear resistance of SL resulting in these processes were compared.
Highlights
Two mechanical processes of surface layer (SL) modification were performed on Vanadis 8 tool steel: grinding (G) and hard turning (HT)
8.0 subjected to a heat treatment in vacuum furnaces with gas quenching until hardness of 64 ±1 HRC was achieved
Presented microstructure consists MC type carbide particles in a fine tempered martensite structure, what was confirmed by X-ray diffraction measurements
Summary
Two mechanical processes of surface layer (SL) modification were performed on Vanadis 8 tool steel: grinding (G) and hard turning (HT). 8.0 subjected to a heat treatment (austenizing temperature 1190°C, soaked 4 min 30 s; third tempering for 2 h at 530°C) in vacuum furnaces with gas quenching until hardness of 64 ±1 HRC was achieved.
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