supported by the National Natural Science Foundation of China(Grant No.51005219);the Key Project of Development Foundation of China Academy of Engineering Physics(Grant No.2013A0203008)
Gas-jet-assisted keyhole laser welding offers the possibility of a breakthrough in the limitations of penetration depth in laser welding,which currently suffers from equipment restrictions.A gas jet of sufficient inte...
The authors are grateful to the financial support for this project from the National Natural Science Foundation of China under grant No. 50675119.
Considering the influence of backward flowing molten jet observed by experiments, a new pool surface deformation formula and droplets heat content model are used to investigate the humping formation mechanism during h...