Three-Dimensional Sintering of Two-Component Metal Powders With Stationary and Moving Laser Beams
- 16 July 1999
- journal article
- Published by ASME International in Journal of Heat Transfer
- Vol. 122 (1) , 150-158
- https://doi.org/10.1115/1.521445
Abstract
Melting and resolidification of a mixture of two metal powders with significantly different melting points under irradiation of a stationary or a moving Gaussian laser beam were investigated numerically and experimentally. The liquid motion driven by capillary and gravity forces as well as the shrinkage of the powder bed caused by the overall density change were taken into account in the physical model. The liquid flow was formulated by using Darcy’s law, and the energy equation was given using a temperature transforming model. Prediction were compared with experimental results obtained with nickel braze and AISI 1018 steel powder. The effects of laser properties and the scanning velocity on the laser sintering process were also investigated. An empirical correlation that can be used to predict the cross-sectional area of the heat affected zone is proposed. [S0022-1481(00)70201-5]Keywords
This publication has 15 references indexed in Scilit:
- Melting of a subcooled mixed powder bed with constant heat flux heatingInternational Journal of Heat and Mass Transfer, 1999
- Melting and Resolidification of a Subcooled Mixed Powder Bed With Moving Gaussian Heat SourceJournal of Heat Transfer, 1998
- Observation, Prediction, and Correlation of Geometric Shape Evolution Induced by Non-Isothermal Sintering of Polymer PowderJournal of Heat Transfer, 1997
- Melting in a Two-Component Packed BedJournal of Heat Transfer, 1997
- Solid Freeform Fabrication: A New Direction in ManufacturingPublished by Springer Nature ,1997
- Thermal densification of metal - ceramic compositesScripta Metallurgica et Materialia, 1993
- Smithells Metals Reference Book. Butterworth‐Heinemann Ltd., Oxford, 1992. 1746 Seiten, Preis 150 £, ISBN 0‐7506‐1020‐4Crystal Research and Technology, 1993
- A Numerical Analysis of Phase-Change Problems Including Natural ConvectionJournal of Heat Transfer, 1990
- Laser-Beam Interactions with MaterialsPublished by Springer Nature ,1987
- Thermal conductivity of packed metal powdersInternational Journal of Heat and Mass Transfer, 1986