THERMAL HARDENING OF HARD ALLOY T15K6
https://doi.org/10.26896/1028-6861-2017-83-12-38-42
Abstract
The impact of thermal hardening and pulse laser treatment on the structure and operational characteristics two-carbide hard alloys is considered. The optimal regimes of laser pulse treatment which provided the lowest wear of the cutting edge of hardened tool are specified. Correlations between the duration of laser exposure and depth of structural changes in the hardened, wear and structural-phase changes attributed to laser treatment, fracture fractography and structural parameters of the hardened hard alloy are determined. An increase (on an average by 150 – 200 units) in the microhardness of the surface layer of T15K6 alloy is observed after pulsed laser treatment. The hardening trend is attributed to structural and phase transformations at the stage of pulse-laser exposure: formation of W2C carbide, saturation of the cobalt bond with tungsten and titanium carbides. A high rate of crystallization in the fused zone promotes formation of the structure with a high hardness. Laser heat treatment increases the performance of T15K6 hard alloy by 2 – 3 times
About the Authors
S. I. Bogodukhov
Оренбургский государственный университет, г. Оренбург
Russian Federation
Russian Federation
E. S. Kozik
Оренбургский государственный университет, г. Оренбург
Russian Federation
Russian Federation
E. V. Svidenko
Оренбургский государственный университет, г. Оренбург
Russian Federation
Russian Federation
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Review
For citations:
Bogodukhov S.I., Kozik E.S., Svidenko E.V. THERMAL HARDENING OF HARD ALLOY T15K6. Industrial laboratory. Diagnostics of materials. 2017;83(12):38-42. (In Russ.) https://doi.org/10.26896/1028-6861-2017-83-12-38-42
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