2000
DOI: 10.1117/12.377006
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Dynamics of keyhole and molten pool in high-power CO 2 laser welding

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Cited by 54 publications
(33 citation statements)
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“…[32][33][34][35][36][37][38][39][40][41][42][43] With such a system, Matsunawa et al [36][37][38][39] studied the laser welding of AA5083 aluminum alloy shielded with helium. It was observed that the depth and shape of the keyhole fluctuated violently, with large bubbles being formed intermittently at the bottom of keyhole.…”
mentioning
confidence: 99%
“…[32][33][34][35][36][37][38][39][40][41][42][43] With such a system, Matsunawa et al [36][37][38][39] studied the laser welding of AA5083 aluminum alloy shielded with helium. It was observed that the depth and shape of the keyhole fluctuated violently, with large bubbles being formed intermittently at the bottom of keyhole.…”
mentioning
confidence: 99%
“…4 For laser welding of titanium, 3 aluminum, 5 and stainless steel, 6 x-ray observations further confirmed that the movement of bubbles and tracer particles in the weld pool are identical and that pore formation decreases with increased welding speed.…”
Section: Introductionmentioning
confidence: 61%
“…Laser welding is greatly fitted to weld titanium alloy sheets because of its marked features such as energy concentration, small heat input, good formation of weld, purification effects and so on. However, porosities and other defects will occur in the weld because of quick cooling velocity and bad protection [1]. Because the fatigue life will reduce when there are porosities and other defects in the weld, and catastrophic accident will take place in some severe states, especially the defects exist in the weak parts of weldments.…”
Section: Introductionmentioning
confidence: 97%