Nd:YAG laser welding experiments

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Laser-beam/plume interaction experiments were conducted with a pulsed Nd:YAG laser. A high speed camera was used to study plume growth phenomena and to determine maximum plume velocities. Tests were done on four different metals: Aluminum 1100, Molybdenum, Nickel 200, and Stainless Steel 304. Previous laser welding experiments have indicated that the vapor plume ejected from the irradiated base material significantly attenuates the laser beam energy for Nickel 200 and Stainless Steel 304. To substantiate this observation, the plume was subjected to a cross flow of argon gas. Metallurgical studies showed a significant increase in weld penetration for all materials except ... continued below

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Pages: 18

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Akau, R.L.; Keicher, D.M.; Fuerschbach, P.W. & Lienert, T.J. October 1, 1985.

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Laser-beam/plume interaction experiments were conducted with a pulsed Nd:YAG laser. A high speed camera was used to study plume growth phenomena and to determine maximum plume velocities. Tests were done on four different metals: Aluminum 1100, Molybdenum, Nickel 200, and Stainless Steel 304. Previous laser welding experiments have indicated that the vapor plume ejected from the irradiated base material significantly attenuates the laser beam energy for Nickel 200 and Stainless Steel 304. To substantiate this observation, the plume was subjected to a cross flow of argon gas. Metallurgical studies showed a significant increase in weld penetration for all materials except for Aluminum. These experiments also indicated that the plume ejects normal to the base material. Thus, the specimen was tilted at different angles in an attempt to reduce laser beam attenuation. Results showed no significant increase in weld depth when the tilt angle was increased. Mass loss measurements were also performed and the experimental data were an order-of-magnitude less than those predicted by a numerical laser welding code.

Physical Description

Pages: 18

Notes

NTIS, PC A02/MF A01; 1.

Source

  • Laser welding and laser surface treatment clinic, Detroit, MI, USA, 29 Oct 1985

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  • Other: DE86000863
  • Report No.: SAND-85-1523C
  • Report No.: CONF-8510170-1
  • Grant Number: AC04-76DP00789
  • Office of Scientific & Technical Information Report Number: 5034818
  • Archival Resource Key: ark:/67531/metadc1061125

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • October 1, 1985

Added to The UNT Digital Library

  • Jan. 22, 2018, 7:23 a.m.

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  • Feb. 2, 2018, 1:21 p.m.

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Akau, R.L.; Keicher, D.M.; Fuerschbach, P.W. & Lienert, T.J. Nd:YAG laser welding experiments, article, October 1, 1985; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc1061125/: accessed October 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.