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1. (WO2017196965) HIGH STRENGTH STEEL PRODUCTS AND ANNEALING PROCESSES FOR MAKING THE SAME

Pub. No.:    WO/2017/196965    International Application No.:    PCT/US2017/031938
Publication Date: Fri Nov 17 00:59:59 CET 2017 International Filing Date: Thu May 11 01:59:59 CEST 2017
IPC: B32B 15/01
C21D 6/00
C21D 8/02
C23C 2/02
C23C 2/06
C21D 9/46
C21D 1/18
C21D 1/25
C21D 1/26
C22C 38/02
C22C 38/04
C22C 38/06
C22C 38/12
C22C 38/14
C23C 28/02
C22C 38/00
C22C 38/08
C22C 38/16
C22C 38/18
C22C 38/40
C22C 38/54
Applicants: UNITED STATES STEEL CORPORATION
Inventors: HOYDICK, David Paul
SILVA, Eduardo Augusto
MCCOSBY, Matthew Michael
Title: HIGH STRENGTH STEEL PRODUCTS AND ANNEALING PROCESSES FOR MAKING THE SAME
Abstract:
The present invention provides steel sheet products having controlled compositions that are subjected to two-step annealing processes to produce sheet products having desirable microstructures and favorable mechanical properties such as high strength and ultra-high formability. Steels processed in accordance with the present invention exhibit combined ultimate tensile strength and total elongation (UTS • TE) properties of greater than 25,000 MPa-%. Steels with these properties fall into the category of Generation 3 advanced high strength steels, and are highly desired by various industries including automobile manufacturers.