HIGH-STRENGTH STEEL LASER WELDING FILLER, JOINT AND METHOD
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United States of America
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Issued Date -
Apr 10, 2025
app pub date -
Oct 13, 2023
filing date -
Oct 13, 2023
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Abstract
A high-strength steel laser welding filler, comprising the following components in percentages by weight: 0.05-0.5% of C, 0.1-2% of Cu, 0.2-2.5% of Cr, 0.5-3.5% of Mo, and 2-10% of Ni, with the balance being Fe and inevitable impurities. The filler is used for laser filler welding of hot-formed steel which has an aluminum-containing coating on the surface thereof, can effectively reduce the adverse effect of the aluminum-containing coating on the surface on the strength of a joint, and enables the strength and plasticity of the welded joint, after hot stamping, to reach 90% or more of those of a base material.
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