SIOM Improves Laser Wire-Fill Welding of Al-Si Coated Steel
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A team led by Yang Shanglu at the Shanghai Institute of Optics and Fine Mechanics studied laser welding of Al-Si coated hot-stamping steel for automotive use. By using a special filler wire and controlling precipitates in the weld, the team achieved one-step direct laser wire-fill welding of 1500 MPa-class Al-Si coated hot-stamping steel. Ni and Al in the wire form a short-range ordered B2 strengthening structure, with B2 nanoprecipitates contributing about 166 MPa of strengthening. Joint elongation increased, and the fracture location shifted from the weld to the base metal. The results were published in Materials Science & Engineering A.
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- Shanghai Institute of Optics and Fine Mechanics (SIOM) · Research UpdatesPicksSIOM Makes New Progress in Laser Welding of Al-Si-Coated Hot-Forming Steel for Automotive Use
The team led by Shanglu Yang at SIOM achieved one-step direct laser filler-wire welding of 1500 MPa-class Al-Si-coated hot-forming steel through a special filler wire and precipitation-phase control in the weld. Ni and Al in the wire form a short-range-ordered B2 strengthening structure, with B2 nanoprecipitates contributing about 166 MPa of strengthening. Joint elongation improved, and the fracture location shifted from the weld to the base material. The results were published in Materials Science & Engineering A.
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