Xunzuo Su

Microstructural Evolution and Through‐Thickness Mechanical Property Gradients in a 70‐mm‐Thick 316LN Stainless Steel Joint Produced by Narrow‐Gap Laser Welding With Pre‐Placed Filler Plates

Reliable joining of 70‐mm‐thick 316LN stainless steel is essential for fusion reactor applications. A high‐efficiency narrow‐gap laser welding strategy combining beam oscillation with pre‐placed filler plates was developed. A sound joint was produced in five passes, including one...