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. 26, 2018
Filed:
Sep. 18, 2015
Arcelormittal, Luxembourg, LU;
Thyssenkrupp Steel Europe Ag, Duisburg, DE;
ARCELORMITTAL, Luxembourg, LU;
THYSSENKRUPP STEEL EUROPE AG, Duisburg, DE;
Abstract
A process for fabricating a steel sheet is provided. The process includes soaking a steel sheet. The steel has a composition including iron, carbon, manganese, silicon, aluminum, sulfur, phosphorus and nitrogen and at least one metallic element X chosen among vanadium, titanium, niobium, molybdenum, and chromium. A quantity Xof metallic element under the form of carbides, nitrides or carbonitrides is, by weight:0.030%≤V≤0.40%;0.030%≤Ti≤0.50%;0.040%≤Nb≤0.40%;0.14%≤Mo≤0.44%; or0.070%≤Cr≤0.6%.The soaking step occurs under a pure nitrogen or argon atmosphere with a dew point lower than −30° C. at a soaking temperature θ between 250 and 900° C. and with a dynamic circulation of a regenerated atmosphere.