EP 3772544 A1 20210210 - METHOD FOR MANUFACTURING SUPER-REFRACTORY NICKEL-BASED ALLOY AND SUPER-REFRACTORY NICKEL-BASED ALLOY
Title (en)
METHOD FOR MANUFACTURING SUPER-REFRACTORY NICKEL-BASED ALLOY AND SUPER-REFRACTORY NICKEL-BASED ALLOY
Title (de)
VERFAHREN ZUR HERSTELLUNG EINER HOCHFEUERFESTEN LEGIERUNG AUF NICKELBASIS UND HOCHFEUERFESTE LEGIERUNG AUF NICKELBASIS
Title (fr)
PROCÉDÉ DE FABRICATION D'UN ALLIAGE À BASE DE NICKEL SUPER-RÉFRACTAIRE ET ALLIAGE À BASE DE NICKEL SUPER RÉFRACTAIRE
Publication
Application
Priority
- JP 2018039400 A 20180306
- JP 2019006991 W 20190225
Abstract (en)
A method for producing a Ni-base superalloy having a composition in which the equilibrium precipitation of gamma prime at 700 ° C. is 35 mol% or more.This method includes a preparation step of manufacturing a material having a crystal grain size of 200 µm or less by hot extrusion, and a processing step of performing cold plastic processing at a working rate of 30% or more. Cold plastic working may be a plurality of times of cold plastic working with a cumulative working rate of 30% or more, and heat treatment is not performed during a plurality of cold plastic working operations. In addition, the Ni-based super heat-resistant alloy has a composition of ≥ 35 mol% of the equilibrium precipitation of gamma prime at 700 ° C. The alloy may have linear tissue of gamma and gamma prime phases, or may have carbides aggregated linearly into an equiaxed crystal structure comprising gamma and gamma prime phases.
IPC 8 full level
C22F 1/10 (2006.01); C22C 19/05 (2006.01); C22F 1/00 (2006.01)
CPC (source: EP US)
B21C 23/001 (2013.01 - EP); B21C 23/002 (2013.01 - EP); B21C 37/04 (2013.01 - EP); B21C 37/045 (2013.01 - EP); C22C 1/023 (2013.01 - EP); C22C 19/056 (2013.01 - EP US); C22C 19/057 (2013.01 - EP US); C22F 1/10 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
US 2020377987 A1 20201203; CN 111868287 A 20201030; EP 3772544 A1 20210210; EP 3772544 A4 20211208; JP 2019218632 A 20191226; JP 6610846 B1 20191127; JP 6889418 B2 20210618; JP WO2019172000 A1 20200416; WO 2019172000 A1 20190912
DOCDB simple family (application)
US 201916970498 A 20190225; CN 201980017214 A 20190225; EP 19764769 A 20190225; JP 2019006991 W 20190225; JP 2019146634 A 20190808; JP 2019538269 A 20190225