Effect of compacting pressure on microstructure and mechanical properties of carbide cutting tools

Article


Albdiry, M. T. and Almosawi, A. I.. 2011. "Effect of compacting pressure on microstructure and mechanical properties of carbide cutting tools ." Powder Metallurgy. 54 (5), pp. 585-591. https://doi.org/10.1179/1743290110Y.0000000001
Article Title

Effect of compacting pressure on microstructure and mechanical properties of carbide cutting tools

ERA Journal ID4734
Article CategoryArticle
AuthorsAlbdiry, M. T. (Author) and Almosawi, A. I. (Author)
Journal TitlePowder Metallurgy
Journal Citation54 (5), pp. 585-591
Number of Pages7
Year2011
Place of PublicationLeeds, United Kingdom
ISSN0032-5899
1743-2901
Digital Object Identifier (DOI)https://doi.org/10.1179/1743290110Y.0000000001
Abstract

The effects of compaction pressure on properties of carbide cutting tools containing 80·5 wt-%WC, 5 wt-%TiC, 5 wt-%TaC–NbC and 9·5 wt-%Co were studied. These tools were formed by powder metallurgy with different compacting pressures ranging from 77 to 231 MPa (5–15 tons in-2) and sintered in a vacuum furnace at a constant sintering temperature (1450°C) and at a constant heating and cooling rate of 5°C min-1. Green and bulk densities, shrinkage and hardness of the produced compacts were measured. Tool cutting performance has been assessed based on machining a medium alloyed steel workpiece under different cutting conditions and measuring the tool flank wear and the workpiece surface roughness. The microstructure of the compacts was metallographically examined using scanning electron microscopy. The results have revealed that both densities and hardness figures increase with increasing compaction pressures, while shrinkage decreases. Cutting performance has not demonstrated a substantial improvement of the tool’s performance and life due to the increasing compacting pressure of these tools.

Keywordscutting performance; mechanical properties; carbide cutting tools; microstructure; compaction pressure
ANZSRC Field of Research 2020400406. Powder and particle technology
401408. Manufacturing processes and technologies (excl. textiles)
401405. Machine tools
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Byline AffiliationsDepartment of Mechanical and Mechatronic Engineering
Babylon Technical Institute, Iraq
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