Porosity formation mechanism and its prevention in laser welding

Welding International

Volumn 17, Issue 6, 2003, Pages 431-437

  Matsunawa, A ^a   Mizutani, M ^a   Katayama, S ^a   Seto, N ^b,c  

^a OSAKA UNIVERSITY   (Japan)

^b OSAKA UNIVERSITY   (Japan)

^c Korea Advanced Institute of Science and Technology (KAIST)   (South Korea)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 85011142147     PISSN: 09507116     EISSN: 17542138     Source Type: Journal    
DOI: 10.1533/wint.2003.3138     Document Type: Article

References (18)

1. Klemens P G: ‘Heat balance and flow conditions for electron beam and laser welding’. J Appl Phys 1976 47 2165-2174.
2. Dowden J et al: ‘A keyhole model for penetration welding with a laser’. J Phys D: Appl Phys 1987 20 36-44.
3. Shuocker D: ‘Modeling of deep penetration welding with a laser’. Proc of CALEO’91Orlando FL USA Laser Institute of America (LIA) 1991 32-39.
4. Metzbower E: ‘Keyhole formation’. Metall Trans B 1993 24 875-880.
5. Kroos J et al: ‘Towards a self-consistent model of the keyhole in penetration laser beam welding’. J Phys D: Appl Phys 1993 26 481-486.
6. Klein T et al: ‘Dynamic behaviour of the keyhole in laser welding’. J Phys D: Appl Phys 1994 27 481-486.
7. Klein T et al: ‘Oscillations of the keyhole in penetration laser beam welding’. J Phys D: Appl Phys 1994 27 2023-2030.
8. Postacioglu et al: ‘Theory of the oscillations of an ellipsoidal weld pool in laser welding’. J Phys D:Appl Phys 1991 24 1288-1292.
9. 2 laser’. J Phys D: Appl Phys 1995 28 2252-2261.
10. Kaplan A: ‘A model of deep penetration laser welding based on calculation of the keyhole profile’. J Phys D: Appl Phys 1994 27 1805-1814.
11. Katayama S et al: ‘Pulse optimisation for defect prevention in pulsed laser welding of stainless steel’. Proc of ICALEO’93 LIA Orlando 1993 77 24-28 487-497.
12. Matsunawa A: ‘Defects formation mechanisms in laser welding and their suppression methods’. Proc of ICALEO’94 FL LIA Orlando USA1994 79 17-20 203-209.
13. Matsunawa A et al: ‘Experimental and theoretical studies on keyhole dynamics in laser welding’. Proc of ICALEO’96 Detroit MI USA 1996 81 14-17 Section B58-67.
14. Matsunawa A et al: ‘Porosity formation in laser welding -Mechanisms and suppression methods’. Proc of ICALEO’97 LIA San Diego 1997 83b (2) 17-20 Section G73-82.
15. Seto N et al: ‘Explanation of porosity formation mechanisms during laser welding of aluminium alloy and methods of suppression’. Q J Jpn Weld Soc 2000 18 (2) 243-255.
16. 2 laser welding of stainless steel and methods of reduction’. Q J Jpn Weld Soc 2001 19 (4) 600-609.
17. Katayama S et al: ‘X-ray transmission in-situ observation of keyhole during laser spot welding and pulse-shaping for prevention of porosity’. Proc of ICALEO Jacksonville FL USA 2001 15-18 E-804-809.
18. 2 laser weldability of aluminium alloy (Report 3) - Material properties of the weld zone’. Light Metal Welding & Construction 1999 37 (2) 47-58.