Chemicothermal treatment of tool materials

Means of increasing the wear resistance of hard alloys, high-speed steel, and high-carbon steel used in cutting tools are considered. Chemicothermal hardening is employed: specifically, diffusional saturation with boron and chromium (chromoboriding) for VK8 sintered tungsten–cobalt alloy and with bo...

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Bibliographic Details
Published in:Steel in translation 2015-08, Vol.45 (8), p.555-558
Main Authors: Gur’ev, A. M., Ivanov, S. G., Gur’ev, M. A., Chernykh, E. V., Ivanova, T. G.
Format: Article
Language:English
Subjects:
Alloys
Boron
Chemistry and Materials Science
Diffusion
High carbon steels
High speed tool steels
Materials Science
Microhardness
Steels
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Summary:Means of increasing the wear resistance of hard alloys, high-speed steel, and high-carbon steel used in cutting tools are considered. Chemicothermal hardening is employed: specifically, diffusional saturation with boron and chromium (chromoboriding) for VK8 sintered tungsten–cobalt alloy and with boron and titanium (titanoboriding) for P6M5 high-speed steel. Attention focuses on VK8 alloy and P6M5 steel because of the increasing industrial use of high-strength, low-wear materials. Their chemical composition and microhardness are investigated; the microhardness of the diffusional coatings obtained is measured. The results indicate that chemicothermal treatment of tool materials is a promising means of improving their strength and performance.
ISSN:0967-0912
1935-0988
DOI:10.3103/S0967091215080057