Fig. 1. Schematic of laser lap welded specimen

Fig. 2. Geometry and mesh of the finite element model

Fig. 3. Temperature dependent material properties of 301L stainless steel. (a) Thermal physical properties; (b) mechanical properties

Fig. 4. Fusion zone obtained by thermal analysis and weld obtained in experiment. (a) Full penetration welded joint; (b) partial penetration welded joint

Fig. 5. Temperature distribution on the outer surfaces and lap interfaces along middle cross-section of weldments. (a) Full penetration welded joint; (b) partial penetration welded joint

Fig. 6. Residual stress contours of full penetration and partial penetration welded joints on the top surface and middle cross-section of the weldments. (a) Longitudinal residual stress; (b) transverse residual stress

Fig. 7. Residual stress along middle cross-section as functions of the distance from welding centerline. (a) Longitudinal residual stress at outer surface; (b) longitudinal residual stress at lap interface; (c) transverse residual stress at outer surface; (d) transverse residual stress at lap interface

Fig. 8. Transverse displacement along middle cross-section as functions of the distance from welding centerline when laser beam arrived weldment center. (a) Full penetration welded joint; (b) partial penetration welded joint

Fig. 9. Welding deformation in plate thickness direction. (a) Deformation contours; (b) displacement obtained by simulation and experiment

Fig. 10. Transverse displacement along the middle cross-section of outer surface and lap interface of weldments. (a) Full penetration welded joint; (b) partial penetration welded joint