Authors: Xiaohong Zhan Yun Liu Wenmin Ou Cheng Gu Yanhong Wei
Publish Date: 2015/11/25
Volume: 24, Issue: 12, Pages: 4948-4957
Abstract
Numerical and experimental investigations of multilayer laserMIG hybrid welding for Fe36Ni Invar alloy were presented in this paper The multilayer laserMIG hybrid welding experiments with different parameters were conducted for the 195mmthick Invar plates A finite element FE model was established to predict the temperature field residual stress and deformation distribution during and after welding A planeconical combined heat source model was used to simulate the laserMIG hybrid welding process Different numbers of welding layers were chosen to study the effect of welding layer on the temperature field residual stress and deformation distribution It was found that the maximum residual stress of Invar plates after laserMIG hybrid welding is 300 MPa and maximum deformation is 04 mm so that laserMIG hybrid welding can be used in actual manufacture of Invar moulds
Keywords: