Study of effect of population density of carbides on surface roughness and wear rate of H21 tool steel

The present work deals with the experimental investigation of the effect of cryotreatment on carbide density, surface finish and wear behaviour of H21 tool steel. It includes the hardening at 1195 °C, nitrogen gas quenching, double tempering for 2 h at 540 °C, cryotreatment at −185 °C for 6 h to 30 ...

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Bibliographic Details
Main Authors: Korade, D.N., Ramana, K.V., Jagtap, K.R.
Format: Conference Proceeding
Language:English
Subjects:
Carbide density
Cryosoaking time
Deep cryogenic treatment
Hardness
Surface roughness
Wear rate
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Summary:The present work deals with the experimental investigation of the effect of cryotreatment on carbide density, surface finish and wear behaviour of H21 tool steel. It includes the hardening at 1195 °C, nitrogen gas quenching, double tempering for 2 h at 540 °C, cryotreatment at −185 °C for 6 h to 30 h cryosoaking duration and soft tempering. The dry wear test has been carried out on pin-on-disc sliding wear test machine. The obtained results infer that the cryotreatment reduces the size of carbides and improves carbide density, and it increases hardness, surface finish and reduces wear rate of cryotreated specimens.
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2019.06.709