Invention Grant
- Patent Title: Metallic component and method of reducing liquid metal embrittlement using low aluminum zinc bath
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Application No.: US16394060Application Date: 2019-04-25
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Publication No.: US11433646B2Publication Date: 2022-09-06
- Inventor: Charles Enloe , Michael J. Karagoulis , Curt D. Horvath
- Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Applicant Address: US MI Detroit
- Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee Address: US MI Detroit
- Agency: Harness, Dickey & Pierce, P.L.C.
- Main IPC: B32B15/01
- IPC: B32B15/01 ; C23C2/06 ; C22C18/04 ; B23K11/11 ; B23K11/16 ; C23C28/02 ; C23C2/28 ; C23C2/34 ; C21D1/26 ; C23C28/00 ; C23C30/00 ; B32B15/20 ; B32B15/04 ; C23C2/40 ; B32B15/18 ; C22C18/00 ; B23K103/04

Abstract:
A metallic component includes a core formed of steel. A zinc alloy layer is disposed on the core. The zinc alloy layer is formed of zinc and a very small amount of aluminum, such as 0.14 weight percent or less. A method of creating a component includes providing a steel core, providing a zinc bath consisting of essentially of 0.01 to 0.14 weight percent aluminum, and hot dipping the steel core into the zinc bath to form a zinc coating on the steel core resulting in a zinc-coated steel component. The aluminum may be provided in even lower contents, such as less than 0.08 weight percent, or even less than 0.05 weight percent. The zinc-coated steel component may then be spot welded to another component without first annealing the zinc-coated component. Rather, heat treating is performed locally at the weld joint by the welding procedure alone.
Public/Granted literature
- US20200338856A1 METALLIC COMPONENT AND METHOD OF REDUCING LIQUID METAL EMBRITTLEMENT USING LOW ALUMINUM ZINC BATH Public/Granted day:2020-10-29
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