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What is Hot Cracking in Nd-YAG Laser Welding about?

The study investigates hot cracking in pulsed Nd-YAG laser welding of Hastelloy-X through numerical modeling and microstructural analysis. It finds that increasing welding speed while maintaining penetration depth reduces liquation cracking in the heat-affected zone, and solidification cracks propagate from liquation cracks along grain boundaries. The research highlights the importance of thermal strains and microstructural factors in the initiation of hot cracking during the welding process.

Author

meraji.dibaenergy

Language

EN