Production method for a spot welded joint using high strength and high forming steel

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12151297
APP PUB NO 20230050317A1
SERIAL NO

17961877

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Abstract

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A spot welded joint of at least two steel sheets is provided. At least one of the steel sheets presents yield strength above or equal to 600 MPa, an ultimate tensile strength above or equal to 1000 MPa, uniform elongation above or equal to 15%. The base metal chemical composition includes 0.05≤C≤0.21%, 4.0≤Mn≤7.0%, 0.5≤Al≤3.5%, Si≤2.0%, Ti≤0.2%, V≤0.2%, Nb≤0.2%, P≤0.025%, B≤0.0035%, and the spot welded joint contains a molten zone microstructure containing more than 0.5% of Al and containing a surface fraction of segregated areas lower than 1%, said segregated areas being zones larger than 20 μm2 and containing more than the steel nominal phosphorus content.

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Patent Owner(s)

Patent OwnerAddress
ARCELORMITTALLUXEMBURG LUXEMBURG CITY LUXEMBOURG LUXEMBOURG

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Arlazarov, Artem Maizieres-les-Mets, FR 15 34
Kegel, Frederic Maizieres-les-Mets, FR 6 18
Perlade, Astrid Le Ban-Saint-Martin, FR 35 69
Vignier, Samuel Pont Astier, FR 5 9

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