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:
Sep. 10, 2019
Filed:
Dec. 10, 2014
Applicant:
Outokumpu Oyj, Espoo, FI;
Inventors:
Assignee:
OUTOKUMPU OYJ, Helsinki, FI;
Primary Examiner:
Int. Cl.
CPC ...
C21D 9/48 (2006.01); C21D 7/10 (2006.01); C22C 38/58 (2006.01); C22C 38/54 (2006.01); C22C 38/52 (2006.01); C22C 38/00 (2006.01); C22C 38/48 (2006.01); C22C 38/46 (2006.01); C22C 38/44 (2006.01); C22C 38/42 (2006.01); C22C 38/06 (2006.01); C22C 38/02 (2006.01); C21D 8/04 (2006.01); C22C 38/50 (2006.01); C21D 6/02 (2006.01); C21D 1/26 (2006.01); C22C 38/40 (2006.01); C21D 7/02 (2006.01); C21D 8/02 (2006.01);
U.S. Cl.
CPC ...
C21D 9/48 (2013.01); C21D 1/26 (2013.01); C21D 6/02 (2013.01); C21D 7/10 (2013.01); C21D 8/0405 (2013.01); C21D 8/0436 (2013.01); C21D 8/0442 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/06 (2013.01); C22C 38/40 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/46 (2013.01); C22C 38/48 (2013.01); C22C 38/50 (2013.01); C22C 38/52 (2013.01); C22C 38/54 (2013.01); C22C 38/58 (2013.01); C21D 7/02 (2013.01); C21D 8/02 (2013.01); C21D 2211/001 (2013.01); C21D 2211/005 (2013.01);
Abstract
The invention relates to a method for producing a high-strength ferritic austenitic duplex stainless steel with the TRIP (Transformation induced plasticity) effect with deformation. After the heat treatment on the temperature range of 950-1150° C. in order to have high tensile strength level of at least 1000 MPa with retained formability the ferritic austenitic duplex stainless steel is deformed with a reduction degree of at least 10%, preferably at least 20% so that with a reduction degree of 20% the elongation (A) is at least 15%.