EP 3587606 A1 20200101 - NI-BASED SUPER HEAT-RESISTANT ALLOY AND METHOD FOR MANUFACTURING SAME
Title (en)
NI-BASED SUPER HEAT-RESISTANT ALLOY AND METHOD FOR MANUFACTURING SAME
Title (de)
N-BASIERTE SUPERWÄRMEBESTÄNDIGE LEGIERUNG UND VERFAHREN ZUR HERSTELLUNG DAVON
Title (fr)
ALLIAGE SUPER-RÉSISTANT À LA CHALEUR À BASE DE NI ET SON PROCÉDÉ DE FABRICATION
Publication
Application
Priority
- JP 2017029974 A 20170221
- JP 2018006046 W 20180220
Abstract (en)
This Ni-based super heat-resistant alloy has a component composition in which the equilibrium precipitated amount of a gamma prime phase at 700°C is 35 mol% or greater, and has grains having a maximum diameter of 75 nm or less in the cross-sectional structure thereof. Also provided is a method for manufacturing this Ni-based super heat-resistant alloy. This method includes a preparation step for preparing a raw material of a Ni-based super heat-resistant alloy having a component composition in which the equilibrium precipitated amount of a gamma prime phase at 700°C is 35 mol% or greater, and a processing step for performing plastic processing of the raw material a plurality of times at a temperature of 500°C or less so as to obtain a cumulative processing rate of 30% or greater. Furthermore provided is a method for manufacturing a Ni-based super heat-resistant alloy, comprising preparing an alloy material having the abovementioned component composition, a hardness of 500 HV or greater, and crystal grains having a maximum diameter of 75 nm or less in the cross-sectional structure thereof, performing plastic processing of the alloy material at a temperature of 500°C or less, and obtaining an alloy having a hardness of 500 HV or greater.
IPC 8 full level
C22C 19/05 (2006.01); C22F 1/00 (2006.01); C22F 1/10 (2006.01)
CPC (source: EP US)
C22C 19/007 (2013.01 - EP); C22C 19/05 (2013.01 - EP US); C22C 19/055 (2013.01 - EP); C22C 19/056 (2013.01 - EP); C22C 19/057 (2013.01 - EP); 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)
EP 3587606 A1 20200101; EP 3587606 A4 20200812; CN 110337500 A 20191015; JP 6422045 B1 20181114; JP WO2018155446 A1 20190228; US 2020010930 A1 20200109; WO 2018155446 A1 20180830
DOCDB simple family (application)
EP 18758195 A 20180220; CN 201880006208 A 20180220; JP 2018006046 W 20180220; JP 2018531683 A 20180220; US 201816483967 A 20180220