Porosity formation and prevention in pulsed laser welding

Journal of Heat Transfer

Volumn 129, Issue 8, 2007, Pages 1014-1024

  Zhou, Jun ^a   Tsai, Hai Lung ^b  

^a GEORGIA SOUTHERN UNIVERSITY   (United States)

^b University of Missouri Rolla   (United States)

Author keywords

Fluid flow; Heat transfer; Laser welding; Modeling; Porosity formation; Prevention; Pulse control

Indexed keywords

COMPUTER SIMULATION; FORECASTING; HEAT TRANSFER; LIQUID METALS; MATHEMATICAL MODELS; POROSITY; SOLIDIFICATION;

POROSITY FORMATION; PULSED LASER WELDING;

LASER BEAM WELDING;

COMPUTER SIMULATION; FORECASTING; HEAT TRANSFER; LASER BEAM WELDING; LIQUID METALS; MATHEMATICAL MODELS; POROSITY; SOLIDIFICATION;

EID: 35348820544     PISSN: 00221481     EISSN: None     Source Type: Journal    
DOI: 10.1115/1.2724846     Document Type: Article

References (17)

1. Ishide, T., Tsubota, S., Nayama, M., Shimokusu, Y, Nagashima, T., and Okimura, K., 1999, "10 kW Class YAG Laser Application for Heavy Components," SPIE High-Power Lasers in Manufacturing, Osaka, Vol. 3888, pp. 543-550.
2. Katayama, S., Seto, N., Kim, J., and Matsunawa, A., 1997, "Formation Mechanism and Reduction Method of Porosity in Laser Welding of Stainless Steel," in Proceedings of ICALEO, Sec. G, pp. 83-92.
3. Katayama, S., and Matsunawa, A., 1998, "Formation Mechanism and Prevention of Defects in Laser Welding of Aluminum Alloys," in Proceedings of CISFFEL 6, Vol. 1, pp. 215-222.
4. Katayama, S., Seto, N., Kim, J., and Matsunawa, A., 1998, "Formation Mechanism and Suppression Procedure of Porosity in High Power Laser Welding of Aluminum Alloys," in Proceedings of ICALEO, Sec. C, pp. 24-33.
5. Katayama, S., Seto, N., Mizutani, M., and Matsunawa, A., 2000, "Formation Mechanism of Porosity in High Power YAG Laser Welding," in Proceedings of ICALEO, Sec. C, pp. 16-25.
6. 2 Laser Welding," in Proceedings of ICALEO, Sec. E, pp. 17-19.
7. Katayama, S., Kohsaka, S., Mizutani, M., Nishizawa, K., and Matsunawa, A., 1993, "Pulse Shape Optimization for Defect Prevention in Pulsed Laser Welding of Stainless Steels," in Proceedings of ICALEO, pp. 487-497.
8. Katayama, S., Kobayashi, Y, Seto, N., Mizutani, M., and Matsunawa, A., 2000, "Effect of Vacuum on Penetration and Defects in Laser Welding," in Proceedings of ICALEO, Sec. C, pp. 182-191.
9. Tsukamoto, S., Kawaguchi, I., and Arakane, G., 2000, "Suppression of Welding Defects in Deep Penetration CO2 Laser Welding," in Proceedings of ICALEO, Sec. C, pp. 7-15.
10. 2 Shielding Gas," in Proceedings of the National Meeting of JWS, No. 66, pp. 144-145.
11. Zhou, J., Tsai, H. L., and Wang, P. C., 2006, "Transport Phenomena and Keyhole Dynamics During Pulsed Laser Welding," ASME J. Heat Transfer, 128(7), pp. 680-690.
12. Kothe, D. B., Mjolsness, R. C., and Torrey, M. D., 1991, "Ripple: A Computer Program for Incompressible Flows With Free Surfaces," LA-12007-MS, Los Alamos National Laboratory.
13. Chiang, K. C., and Tsai, H. L., 1992, "Shrinkage-Induced Fluid Flow and Domain Change in Two-Dimensional Alloy Solidification," Int. J. Heat Mass Transfer, 35, pp. 1763-1769.
14. 2 Laser Welding," in Proceedings of the ICALEO, Sec. G, pp. 210-218.
15. Dowden, J., Postacioglu, N., Davis, M., and Kapadia, R, 1987, "A Keyhole Model in Penetration Welding WIth a Laser," J. Phys. D, 20, pp. 36-44.
16. Siegel, R., and Howell, J. R., 1992, Thermal Radiation Heat Transfer, 3rd ed., Hemisphere, NY, Chap. 13.
17. Wang, Y., and Tsai, H. L., 2001, "Impingement of Filler Droplets and Weld Pool Dynamics During Gas Metal Arc Welding Process," Int. J. Heat Mass Transfer, 44, pp. 2067-2080.