The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 27, 2017
Filed:
Sep. 06, 2011
Olivier Bouaziz, Metz, FR;
David Barbier, Metz, FR;
Coralie Jung, Neunkirchen-les-Bouzonville, FR;
ARCELORMITTAL INVESTIGACIÓN Y DESARROLLO S.L., Sestao Bizkaia, ES;
Abstract
A rolled steel sheet or blank is provided, the composition of which comprises the elements listed below in percent by weight: C≦0.1%; 0.5%≦Mn≦7%; 0.5%≦Si≦3.5%; 0.5%<Ti≦2%; 2%<Ni≦7%; Al≦0.10%; Cr≦2%; Cu≦2%; Co≦2%; Mo≦2%; S≦0.005%; P≦0.03%; Nb≦0.1%; V≦0.1%; B<0.005%; N≦0.008%, and the silicon and titanium contents are such that: the remainder of the composition consisting of iron and unavoidable impurities resulting from processing. A method for the fabrication of a part for a land motor vehicle from the sheet or blank by hot stamping is also provided. The microstructure of the part consisting essentially of martensite and intermetallic precipitates of type FeTiSi with an area percentage between 1 and 5% intermetallic precipitates.