Global Patent Index - EP 3653322 A1

EP 3653322 A1 20200520 - SINTERED MATERIALS OF AUSTENITE STEEL POWDER AND TURBINE MEMBERS

Title (en)

SINTERED MATERIALS OF AUSTENITE STEEL POWDER AND TURBINE MEMBERS

Title (de)

GESINTERTE MATERIALIEN AUS AUSTENITSTAHLPULVER UND TURBINENELEMENTE

Title (fr)

MATÉRIAUX FRITTÉS DE POUDRE D'ACIER AUSTÉNITIQUE ET ÉLÉMENTS DE TURBINE

Publication

EP 3653322 A1 20200520 (EN)

Application

EP 19209339 A 20191115

Priority

JP 2018216639 A 20181119

Abstract (en)

The present invention aims to provide sintered materials of austenite steel powder each having a strength which is equivalent to or in excess of the strength of a Ni-based alloy and insusceptible to oxygen and turbine members each being composed of each sintered material. There is provided the sintered material of austenite steel powder which contains 25 to 50% Ni; 12 to 25% Cr, 3 to 6% Nb; 0.001 to 0.05% B; not more than 1.6% Ti; not more than 6% W; not more than 4.8% Mo; and not more than 0.5% Zr in percentage by mass, with a balance made up of Fe and unavoidable impurities.

IPC 8 full level

B22F 3/15 (2006.01); B22F 5/00 (2006.01); C22C 19/05 (2006.01)

CPC (source: EP KR US)

B22F 5/009 (2013.01 - EP KR US); C22C 19/055 (2013.01 - KR); C22C 19/056 (2013.01 - EP); C22C 19/058 (2013.01 - EP KR); C22C 30/00 (2013.01 - US); C22C 33/006 (2013.01 - US); C22C 33/0285 (2013.01 - EP KR US); C22C 38/004 (2013.01 - US); C22C 38/08 (2013.01 - US); C22C 38/44 (2013.01 - US); C22C 38/48 (2013.01 - US); C22C 38/50 (2013.01 - US); C22C 38/54 (2013.01 - US); B22F 2301/15 (2013.01 - US); B22F 2301/205 (2013.01 - US); B22F 2301/35 (2013.01 - US); B22F 2304/10 (2013.01 - US); B22F 2998/10 (2013.01 - EP KR)

Citation (applicant)

JP 2017088963 A 20170525 - MITSUBISHI HITACHI POWER SYS, et al

Citation (search report)

  • [X] CN 105543747 A 20160504 - UNIV NORTHWESTERN POLYTECHNICAL
  • [X] APPA RAO G ET AL: "Effect of standard heat treatment on the microstructure and mechanical properties of hot isostatically pressed superalloy Inconel 718", MATERIALS SCIENCE AND ENGINEERING: A, ELSEVIER, AMSTERDAM, NL, vol. A355, no. 1-2, 25 August 2003 (2003-08-25), pages 114 - 125, XP002508200, ISSN: 0921-5093
  • [X] RAO G A ET AL: "Influence of modified processing on structure and properties of hot isostatically pressed superalloy Inconel 718", MATERIALS SCIENCE AND ENGINEERING: A, ELSEVIER, AMSTERDAM, NL, vol. 418, no. 1-2, 25 February 2006 (2006-02-25), pages 282 - 291, XP027952290, ISSN: 0921-5093, [retrieved on 20060225]
  • [X] SANVIEMVONGSAK TOM ET AL: "High temperature oxidation of IN 718 manufactured by laser beam melting and electron beam melting: Effect of surface topography", CORROSION SCIENCE, OXFORD, GB, vol. 141, 10 July 2018 (2018-07-10), pages 127 - 145, XP085429031, ISSN: 0010-938X, DOI: 10.1016/J.CORSCI.2018.07.005
  • [X] ZHANG YAOCHENG ET AL: "Sensitivity of Liquation Cracking to Deposition Parameters and Residual Stresses in Laser Deposited IN718 Alloy", JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, ASM INTERNATIONAL, MATERIALS PARK, OH, US, vol. 26, no. 11, 3 October 2017 (2017-10-03), pages 5519 - 5529, XP036362596, ISSN: 1059-9495, [retrieved on 20171003], DOI: 10.1007/S11665-017-2966-2
  • [X] MATTHEW J DONACHIE ET AL: "Passage", 1 January 2002, SUPERALLOYS A TECHNICAL GUIDE SECOND EDITION, ASM INTERNATIONAL, US, PAGE(S) 42 - 72, ISBN: 978-0-87170-749-9, XP009508032
  • [X] CHLEBUS E ET AL: "Effect of heat treatment on the microstructure and mechanical properties of Inconel 718 processed by selective laser melting", MATERIALS SCIENCE AND ENGINEERING: A, vol. 639, 21 May 2015 (2015-05-21), pages 647 - 655, XP029214946, ISSN: 0921-5093, DOI: 10.1016/J.MSEA.2015.05.035
  • [X] SUI SHANG ET AL: "The influence of Laves phases on the room temperature tensile properties of Inconel 718 fabricated by powder feeding laser additive manufacturing", ACTA MATERIALIA, ELSEVIER, OXFORD, GB, vol. 164, 19 October 2018 (2018-10-19), pages 413 - 427, XP085570476, ISSN: 1359-6454, DOI: 10.1016/J.ACTAMAT.2018.10.032
  • [X] QI H ET AL: "Studies of Standard Heat Treatment Effects on Microstructure and Mechanical Properties of Laser Net Shape Manufactured INCONEL 718", METALLURGICAL AND MATERIALS TRANSACTIONS A, SPRINGER-VERLAG, NEW YORK, vol. 40, no. 10, 14 August 2009 (2009-08-14), pages 2410 - 2422, XP019735117, ISSN: 1543-1940, DOI: 10.1007/S11661-009-9949-3
  • [X] PICKERING E J ET AL: "Grain-boundary precipitation in Allvac 718Plus", ACTA MATERIALIA, ELSEVIER, OXFORD, GB, vol. 60, no. 6, 24 January 2012 (2012-01-24), pages 2757 - 2769, XP028476561, ISSN: 1359-6454, [retrieved on 20120128], DOI: 10.1016/J.ACTAMAT.2012.01.042
  • [X] "Linköping studies in science and technology: Licentiate thesis", vol. 1798, 30 January 2018, DEPARTMENT OF SCIENCE AND TECHNOLOGY, LINKÖPINGS UNIVERSITET, Sweden, ISSN: 0280-7971, article DUNYONG DENG: "Additively Manufactured Inconel 718: Microstructures and Mechanical Properties", pages: 1 - 69, XP055649004
  • [X] N. ERGIN ET AL: "Synthesis of Inconel 718 Superalloy by Electric Current Activated Sintering", ACTA PHYSICA POLONICA: SERIES A, vol. 127, no. 4, 24 April 2015 (2015-04-24), PL, pages 1100 - 1102, XP055649005, ISSN: 0587-4246, DOI: 10.12693/APhysPolA.127.1100
  • [X] AHMAD MOSTAFA ET AL: "Structure, Texture and Phases in 3D Printed IN718 Alloy Subjected to Homogenization and HIP Treatments", METALS, vol. 7, no. 6, 30 May 2017 (2017-05-30), pages 196, XP055649018, DOI: 10.3390/met7060196
  • [XI] ASHOK KOUL ET AL: "The High temperature properties of Fe-Ni-Cr alloys", 1 March 1979 (1979-03-01), XP055649249, Retrieved from the Internet <URL:http://shura.shu.ac.uk/19928/1/10697234.pdf> [retrieved on 20191204]

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 3653322 A1 20200520; CN 112585288 A 20210330; JP 2020084229 A 20200604; JP 7112317 B2 20220803; KR 102467393 B1 20221116; KR 20210024083 A 20210304; SG 11202100355U A 20210629; US 2020157664 A1 20200521; WO 2020105496 A1 20200528

DOCDB simple family (application)

EP 19209339 A 20191115; CN 201980050604 A 20191111; JP 2018216639 A 20181119; JP 2019044163 W 20191111; KR 20217002293 A 20191111; SG 11202100355U A 20191111; US 201916682721 A 20191113