EP 3842556 A1 20210630 - INOCULATION PROCESS FOR GRAIN REFINEMENT OF A NICKEL BASE ALLOY
Title (en)
INOCULATION PROCESS FOR GRAIN REFINEMENT OF A NICKEL BASE ALLOY
Title (de)
IMPFVERFAHREN ZUR KORNFEINERUNG EINER NICKELBASISLEGIERUNG
Title (fr)
PROCÉDÉ D'INOCULATION POUR LE RAFFINAGE DU GRAIN D'UN ALLIAGE À BASE DE NICKEL
Publication
Application
Priority
EP 19383203 A 20191227
Abstract (en)
An inoculation process of a nickel base alloy, wherein the process is carried out in a vacuum furnace and comprises: a) providing a melt of a nickel base alloy in vacuum conditions, characterized in that the inoculation process further comprises: b) introducing an encapsulated inoculant comprising a mixture of Co<sub>3</sub>FeNb<sub>2</sub> and CrFeNb(Ni) inside the melt of the nickel base alloy at a temperature from 1450 to 1500 °C for a period from 5 to 30 seconds, c) immediately pouring the inoculated nickel base alloy of step b) into a mold, preferably at a temperature from 1450 to 1500 °C, and d) cooling said inoculated nickel base alloy.
IPC 8 full level
C22C 1/02 (2006.01); C22C 1/06 (2006.01); C22C 3/00 (2006.01); C22C 19/03 (2006.01); C22C 19/05 (2006.01); F27B 5/04 (2006.01)
CPC (source: EP)
C22C 1/023 (2013.01); C22C 1/06 (2013.01); C22C 3/00 (2013.01); C22C 19/03 (2013.01); C22C 19/05 (2013.01)
Citation (applicant)
- G. MARAHLEHA. R. I. KHEDERH. F. HAMAD: "CREEP-LIFE PREDICTION OF SERVICE-EXPOSED TURBINE BLADES", MATERIALS SCIENCE, vol. 42, no. 4, 2006
- KUMAR, S.SUDHAKAR RAO, G.CHATTOPADHYAY, K.MAHOBIA, G.S.SANTHI SRINIVAS, N.C.SINGH, V.: "Effect of Surface Nanostructure on Tensile Behavior of Superalloy IN718", MATERIALS AND DESIGN, 2014
- LI YING-JUMA XIAO-PINGYANG YUAN-SHENG: "Grain refinement of as-cast superalloy IN718 under action of low voltage pulsed magnetic field", TRANS. NONFERROUS MET. SOC. CHINA, vol. 21, 2011, pages 1277 - 1282
- J.R. BRINEGARL.F. NORRISL. ROSENBERG: "Superalloy", 1984, article "The Metallurgical Society of AIME", pages: 23
- "Grain Refinement in Casting and Welds", 1983, THE METALLURGICAL SOCIETY OF AIME, pages: 197
- "Superalloys 1984, The Metallurgical Society of AIME", 1984, THE METALLURGICAL SOCIETY OF AIME, pages: 33
- J.M. LANE: "Microcast-x Fine Grained Castings for Aerospace Industry", PRESENTED AT AEROMAT'93 CONFERENCE, 1993
- A.F. DENZINET.A. KOLAKOWSKIJ.F. WALLANCE, PROCEEDING AGARD CONFERENCE ON ADVANCED CASTING TECHNOLOGY, AGARD CONFERENCE PROCEEDING, 1982
- A. N. CHEREPANOVV. E. OVCHARENKO: "Effect of Nanostructured Composite Powders on the Structure and Strength Properties of the High_Temperature Inconel 718 Alloy", THE PHYSICS OF METALS AND METALLOGRAPHY, vol. 116, no. 12, 2015, pages 1279 - 1284
- LIN LIUTAIWEN HUANGYUHUA XIONGAIMIN YANGZHILONG ZHAOARONG ZHANGJINSHAN LI: "Grain refinement of superalloy K4169 by addition of refiners: cast structure and refinement mechanisms", MATERIALS SCIENCE AND ENGINEERING A, vol. 394, no. 2005, pages 1 - 8
Citation (search report)
- [IA] WO 2015108599 A2 20150723 - UNITED TECHNOLOGIES CORP [US]
- [A] GB 414053 A 19340719 - HAROLD SMETHURST, et al
- [A] US 3343828 A 19670926 - HUNT CHARLES D A
- [A] US 4094666 A 19780613 - OTOTANI TOHEI
- [A] JP 5109115 B2 20121226
- [A] EP 1093872 A1 20010425 - GEN ELECTRIC [US]
- [A] CN 108950228 A 20181207 - SHENYANG JINNA NEW MAT CO LTD
- [A] EP 3327159 A1 20180530 - SULZER MANAGEMENT AG [CH]
- [A] US 2015069042 A1 20150312 - SERRAGO DANIEL F [US], et al
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 3842556 A1 20210630; EP 3842556 B1 20230705; ES 2958763 T3 20240214
DOCDB simple family (application)
EP 19383203 A 20191227; ES 19383203 T 20191227