Laser Welding of Grey Cast Iron with Spheroidal Graphite-Influence of Process Parameters on Crack Formation and Hardness

In the investigation at hand, sheets of ferritic and pearlitic grey cast iron with spheroidal graphite are welded using a fiber-laser. The influence varying laser power welding speed on macroscopic characteristics weld seam crack formation analyzed discussed. Substantial densities up to 2.93 cm−1 found. Furthermore, hardness measurements conducted evaluate brittle phases within metal heat-affected zone. Peak values 860 HV0.3 975 identified in EN-GJS-400-15 EN-GJS-700-2, respectively. Subsequently, proposition dependence width is given. nickel-containing filler material microstructure, studied. It can be derived from results that laser-beam requires further research order achieve crack-free seams hinder undesirable, phases.