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:
Jan. 07, 2025
Filed:
May. 23, 2017
Arcelormittal, Luxembourg, LU;
Jean-Christophe Hell, Metz, FR;
Nicolas Charbonnier, Metz, FR;
Thierry Iung, Jarny, FR;
Blandine Remy, Sanry les Vigy, FR;
ArcelorMittal, Luxembourg, LU;
Abstract
A method for manufacturing a recovered steel sheet having an austenitic matrix presenting at least one mechanical property (M) equal or above a target value Mis provided. The method includes a calibrating process involving heat treatments on at least 2 samples of the steel, corresponding to Pareq values P, submitting said samples to X-ray diffraction so as to obtain spectrums including a main peak whose width at mid height FWHM is being measured, measuring a mechanical property (M) of said samples, measuring a recovery or recrystallization state of each sample, drawing a curve of M as a function of FWMH in a domain where the samples are recovered from 0 to 100%, but not recrystallized. The method further includes calculating a FWHMcorresponding to a target mechanical property M, determining a pareq value Pof the heat treatment to perform to reach Mand selecting a time tand a temperature T°corresponding to the Pvalue. The method further includes feeding a recrystallized steel sheet having a M, cold-rolling the recrystallized steel sheet in order to obtain a steel sheet having a Mand annealing the cold rolled steel sheet at a temperature T°during a time t.