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US 2024/0181748 A1Published application
Manufacturing method of aluminum-based alloy plated steel
AssigneePosco
InventorsJin-Keun OH, Il-Ryoung SOHN, Seong-Woo KIM, Jeom-Soo SHIN
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Abstract
The present disclosure relates to an aluminum-based plated steel that is provided for vehicles by hot forming, an aluminum-based alloy plated steel manufactured using the same, and method of manufacturing thereof.
Claims10
An aluminum-based plated steel, comprising:
- a base steel;
- and
- an Al-based plated layer on the base steel,
- wherein the Al-based plated layer comprises an Al—Si crystallized phase, and
- wherein an average gain size of the Al—Si crystallized phase is 4 μm or less.
2 more elements
A method of manufacturing an aluminum-based plated steel, comprising:
- preparing a base steel comprising, by wt %, 0.018 to 0.25% of C, 0.1 to 0.5% of Si, 0.9 to 1.5% of Mn, 0.03% or less of P, 0.01% or less of S, 0.01 to 0.05% of Al, 0.05 to 0.5% of Cr, 0.01 to 0.05% of Ti, 0.001 to 0.005% of B, 0.009% or less of N, and a balance of Fe and inevitable impurities;
- plating the prepared base steel by submerging the base steel in a hot-dip aluminum plating bath;
- and
- cooling the plated base steel at 3 to 25° C./s.
1 more element
Dependencies are inferred from the claim text.