Porosity control of in situ forming tungsten carbide in laser additive manufacturing (LAM)

Sevcenko, P., Chrysanthou, A., Kong, C. Y. and Nicolson, P. (2020) Porosity control of in situ forming tungsten carbide in laser additive manufacturing (LAM). Lasers in Engineering, 46 (5-6). pp. 313-320. ISSN 0898-1507

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The effect of powder compression on the formation of porosity when heating with a laser beam has been investigated. The starting materials were elemental powders of Fe, W and C which were locally melted to form WC in Fe matrix by an in situ laser additive manufacturing (LAM) process. The resulting microstructures have been studied and chemical analysis has been performed. The main application for the process is for the production of WC based or carbide cutting tooling by very accurate deposition of hard-facing materials onto a steel substrate. Fe is used as the matrix material since ferrous alloys are employed as the substrate for these applications.

Item Type	Article
Additional information	© 2020 Old City Publishing, Inc. Published by license under the OCP Science imprint, a member of the Old City Publishing Group.
Keywords	fibre laser, in situ tungsten carbide formation, laser additive manufacturing (lam), porosity control, tungsten carbide, wc, atomic and molecular physics, and optics, industrial and manufacturing engineering, electrical and electronic engineering
Date Deposited	15 May 2025 14:33
Last Modified	31 May 2025 00:28