Welding characteristics of aluminum alloy by pulsed Nd:YAG laser with pre-and post-irradiation of superposed continuous diode laser

Using pulse shaping to control temporal strain development and solidification cracking in pulsed laser welding of 6082 aluminum alloys

“…2). The crack radius was also used by Nakashiba et al (2011) to evaluate 1.5-1.9 kW cool (RD) 3.5 ms and 13.5 ms cool (SD) 5 ms and 10 ms the hot cracking susceptibility in laser spot welding of aluminum. The penetration depth was measured by taking cross-sections of the welds.…”

Double pulse laser welding of 6082 aluminium alloys

“…This approach has been shown in a similar way by Nakashiba et al, who welded non-heat treatable Al3003 aluminium alloys with a Nd:YAG laser pulse and a superimposed diode laser pulse. 17 The present study applies this idea to the more critical heat treatable Al6082-T6 aluminium alloys 18 to enable crack free welds within the heat conduction and keyhole mode welding regime. Initial investigations focus on the conventional pulsed Nd:YAG laser welding process to illustrate the process limits in terms of crack free penetration depth.…”

“…This approach has been shown in a similar way by Nakashiba et al , who welded non-heat treatable Al3003 aluminium alloys with a Nd:YAG laser pulse and a superimposed diode laser pulse. 17…”