Porosity Formation after the Irradiation Termination of Laser

Wang Hong; Ling Yun Wang; Ri Sheng Li

doi:10.4028/www.scientific.net/AMR.800.201

Paper Titles

Research of Heavy Metal Particle and Ions Absorption Mechanism of Ordinary Portland Cement Materials
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The Research on the Mechanical Properties of the same Curing Agent of Different Soil Dredged Mud
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Research Progress of Slicing Method for Solar Silicon Wafer
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Dynamic Buckling Behaviors of Steel Cylindrical Shell Subjected to Conventional Explosion Impact Loading
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Porosity Formation after the Irradiation Termination of Laser
p.201

Study of High-Power White LED's Lifetime Based on Accelerated Life Test
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Molecular Dynamics Simulation of Thermal Conductivity of 3C-SiC Nanowire
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Study on Ultrasonic Measurement for Non-Uniform Stress Field
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Mechanical Structure Strength Analysis of Field Refueling Tank Based on ANSYS
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 800Porosity Formation after the Irradiation...

Porosity Formation after the Irradiation Termination of Laser

Abstract:

Porosity is formed because of the keyhole collapse. The porosity formation is associated with the melt pool dynamics, the keyhole collapse and solidification processes. The objective of the paper is t to investigate porosity formation mechanisms and fluid flow in the melt pool using the volume of fluid method. The results indicate that the formation of porosity in continuous wave keyhole mode laser welding is associated to keyhole collapse, backfilling of liquid metal close the gas exit of the laser welding keyhole, surface tension of the gas/liquid interface play an important role in the backfilling downward to the keyhole right after laser beams left.Keywords: porosity; keyhole; collapse; welding; model

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Periodical:

Advanced Materials Research (Volume 800)

Pages:

201-204

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.800.201

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Online since:

September 2013

Authors:

Wang Hong, Ling Yun Wang, Ri Sheng Li

Keywords:

Collapse, Keyhole, Model, Porosity, Welding

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