Liquid metal expulsion during laser irradiation
- 15 October 1992
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 72 (8) , 3317-3322
- https://doi.org/10.1063/1.351452
Abstract
During laser assisted materials processing such as welding, cutting, drilling, or surface alloying, the processing conditions are adjusted to either achieve or avoid liquid metal expulsion. Currently, there is no theoretical model to determine, from fundamental principles, the operating conditions for the initiation of liquid metal expulsion during laser irradiation. Processing conditions necessary for the initiation of liquid metal expulsion during pulsed laser irradiation have been investigated experimentally and theoretically. Lead, titanium, and stainless steel samples were irradiated by single and multiple pulses of varying pulse durations to investigate conditions for liquid metal expulsion. It is demonstrated that using theoretically computed transient spatial temperature profiles, and by balancing surface tension and recoil forces, the conditions for the initiation of liquid metal expulsion can be determined.This publication has 6 references indexed in Scilit:
- Probing laser induced metal vaporization by gas dynamics and liquid pool transport phenomenaJournal of Applied Physics, 1991
- Free surface flow and heat transfer in conduction mode laser weldingMetallurgical Transactions B, 1988
- One-dimensional steady-state model for damage by vaporization and liquid expulsion due to laser-material interactionJournal of Applied Physics, 1987
- Alloying element vaporization and weld pool temperature during laser welding of AlSl 202 stainless steelMetallurgical Transactions B, 1984
- Theoretical Modeling of Rapid Surface Vaporization with Back PressureAIAA Journal, 1979
- Laser drilling velocity in metalsJournal of Applied Physics, 1976