Global Patent Index - EP 3520915 A4

EP 3520915 A4 20200610 - METHOD OF MANUFACTURING NI-BASED SUPER HEAT RESISTANT ALLOY EXTRUDED MATERIAL, AND NI-BASED SUPER HEAT RESISTANT ALLOY EXTRUDED MATERIAL

Title (en)

METHOD OF MANUFACTURING NI-BASED SUPER HEAT RESISTANT ALLOY EXTRUDED MATERIAL, AND NI-BASED SUPER HEAT RESISTANT ALLOY EXTRUDED MATERIAL

Title (de)

VERFAHREN ZUR HERSTELLUNG EINES EXTRUDIERTEN MATERIALS AUS EINER NI-BASIERTEN, EXTREM HITZEBESTÄNDIGEN LEGIERUNG UND EXTRUDIERTES MATERIAL AUS EINER NI-BASIERTEN, EXTREM HITZEBESTÄNDIGEN LEGIERUNG

Title (fr)

PROCÉDÉ DE FABRICATION DE MATÉRIAU EXTRUDÉ D'ALLIAGE TRÈS RÉSISTANT À LA CHALEUR À BASE DE NI, ET MATÉRIAU EXTRUDÉ D'ALLIAGE TRÈS RÉSISTANT À LA CHALEUR À BASE DE NI

Publication

EP 3520915 A4 20200610 (EN)

Application

EP 17855276 A 20170530

Priority

  • JP 2016193522 A 20160930
  • JP 2017020143 W 20170530

Abstract (en)

[origin: EP3520915A1] Provided are a method of manufacturing a precipitation-strengthened Ni-based super heat resistant alloy extruded material with a high gamma prime content and an Ni-based super heat resistant alloy extruded material. This method of manufacturing an Ni-based super heat resistant alloy extruded material includes: a first step in which an ingot obtained by casting molten metal having a component composition of a precipitation-strengthened Ni-based super heat resistant alloy in which the equilibrium precipitation amount of gamma prime at 700°C is at least equal to 40 mol% is used as a billet, and the billet is heated to a hot working temperature that is at least equal to 1030°C and is less than the gamma prime solvus temperature of the Ni-based super heat resistant alloy; and a second step in which the billet that has been heated to the hot working temperature is inserted into a container, a compressive force is imparted to the billet from one end side of the container, and the billet is extruded at an extrusion rate of 10 to 300 mm/s from a hole in a die placed at the other end side of the container, to yield an Ni-based super heat resistant alloy extruded material. Furthermore, the Ni-based super heat resistant alloy extruded material has the component composition described hereinabove, with an average crystal grain diameter in a cross-sectional structure at most equal to 20 µm in terms of an equivalent circle diameter.

IPC 8 full level

B21C 23/00 (2006.01); C22C 19/05 (2006.01); C22F 1/10 (2006.01)

CPC (source: EP US)

B21C 23/00 (2013.01 - EP US); B21C 23/002 (2013.01 - US); B21C 23/212 (2013.01 - US); C22C 19/05 (2013.01 - US); C22C 19/056 (2013.01 - EP US); C22F 1/10 (2013.01 - EP US)

Citation (search report)

  • [E] EP 3520916 A1 20190807 - HITACHI METALS LTD [JP]
  • [X] US 4769087 A 19880906 - GENEREUX PAUL D [US], et al
  • [XA] US 4832112 A 19890523 - BRINEGAR JOHN R [US], et al
  • [XA] US 4820353 A 19890411 - CHANG KEH-MINN [US]
  • [A] EP 2796578 A1 20141029 - GEN ELECTRIC [US]
  • [XA] PARIKH ET AL: "Properties of superalloys made by hot working of prealloyed powders", HIGH TEMPERATURE MATERIALS; SIXTH PLANSEE SEMINAR, JUNE 24 - 28, 1968, REUTTE, SPRINGER, VIENNA, 1 January 1969 (1969-01-01), pages 500 - 513, XP009520112
  • [A] ASTM: "ASTM E112", TEST METHODS FOR DETERMINING AVERAGE GRAIN SIZE, 3 September 2013 (2013-09-03), West Conshohocken, PA, XP055377301, Retrieved from the Internet <URL:https://www.researchgate.net/file.PostFileLoader.html?id=52b365a3d4c1184e178b465d&assetKey=AS:272184704995334@1441905298344> [retrieved on 20170531], DOI: 10.1520/E0112-12
  • [A] SCHEIRER S T ET AL: "Extrusion of cast nickel-base superalloys", TRANSACTIONS OF THE AMERICAN SOCIETY FOR METALS, XX, US, vol. 59, no. 1, 1 January 1966 (1966-01-01), pages 49 - 59, XP009520121, ISSN: 0096-7416
  • [A] MANEGIN YU V ET AL: "Development of the technology of hot-extrusion of deformation-resistant alloys", STAL`, METALLURGIA, MOSCOW, RU, no. 3, 1 January 1982 (1982-01-01), pages 49 - 53, XP009520116, ISSN: 0038-920X
  • See references of WO 2018061317A1

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

DOCDB simple family (publication)

EP 3520915 A1 20190807; EP 3520915 A4 20200610; CN 109789457 A 20190521; JP 6660042 B2 20200304; JP WO2018061317 A1 20190411; US 2019232349 A1 20190801; WO 2018061317 A1 20180405

DOCDB simple family (application)

EP 17855276 A 20170530; CN 201780060401 A 20170530; JP 2017020143 W 20170530; JP 2018541895 A 20170530; US 201716335725 A 20170530