Aluminum plated steel sheet, thermoformed component, and manufacturing methods
AssigneeBaoshan Iron & Steel Co., Ltd.
InventorsNing Tan, Hao Liu, Xinyan Jin
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Abstract
An aluminum plated steel sheet includes a substrate and a plating layer on the surface of the substrate. The microstructure of the plating layer includes a Mg2Si phase and an AlMgSiFe phase; an average grain diameter of the Mg2Si phase is 0.001-5 μm. This aluminum plated steel sheet can alleviate the problem of melting-induced roller sticking and hydrogen embrittlement risk in a thermoforming process of the aluminum plated steel sheet.
Claims20
An aluminum plated steel sheet, comprising a substrate and a plating layer on the surface of the substrate,
- wherein a microstructure of the plating layer comprises a Mg2Si phase and an AlMgSiFe phase, and the Mg2Si phase has an average grain diameter of 0.001-5 μm,
- wherein the plating layer comprises a barrier layer formed on the surface of the substrate and a surface layer formed on the barrier layer,
- wherein the barrier layer comprises Fe—Al and Fe—Al—Si alloys, and the surface layer contains the Mg2Si phase and the AlMgSiFe phase.
The manufacturing method for the aluminum plated steel sheet as claimed in 8, wherein a chemical composition of the plating solution comprises in percentage by mass:
- 5-11% of Si, and 0.5-20% of Mg.
Dependencies are inferred from the claim text.