S78:E01
https://doi.org/10.3221/IGF-ESIS.78.01
Joining dissimilar metals like cast iron and structural steel offers great design flexibility, but it can be a structural nightmare. Different thermal expansions and conductivities during welding create severe residual stresses and distortions, threatening the integrity of hybrid components. Our latest research introduces an experimentally validated Finite Element (FE) model for Cast Iron-Steel butt welds. We discovered a striking asymmetry: the steepest thermal gradients and the highest longitudinal residual stresses localize predominantly on the cast iron side due to its microstructural hardening, rather than the steel. Want to optimize your hybrid structural designs and avoid unexpected failures? Read the full open-access paper to explore our predictive thermo-mechanical modeling approach!
