A method for obtaining electrodes from alloys based on nickel aluminide

• Main Authors: IKORNIKOV DENIS MIHAJLOVICH, ZAITSEV ALEKSANDR ANATOLEVICH, LEVASHOV EVGENY ALEKSANDROVICH, POGOZHEV YURY SERGEEVICH, YUKHVID VLADIMIR ISAAKOVICH, SENTYURINA ZHANNA ALEKSANDROVNA, ANDREEV DMITRY EVGENEVICH, SANIN VLADIMIR NIKOLAEVICH
• Format: Patent
• Language: Chinese; English
• Published: 27.03.2018
• Subjects: ALLOYS; CASTING; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; METALLURGY; NANOTECHNOLOGY; PERFORMING OPERATIONS; POWDER METALLURGY; SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

The invention relates to obtaining cast electrodes from high alloys based on nickel aluminide and may be used in additive 3D technologies in order to obtain geometrically complicated articles. The method includes obtainment of the semi-finished product through the centrifugal SHS casting with using the reaction mixture containing, wt%: Nickel oxide 47.0-49.1, Aluminum 28.6-32.4, Alloying additive13.1-17.9, Functional additive 6.5-7.0; a two-stage remelt of the semi-finished with obtaining the refined degassed ingot during the first stage and the electrode from the nanomodified alloy during the second stage, wherein during the said second stage some amount of the master alloy that consists of pressed aluminum and nanopowder mixture with a specific surface area of 5/30 m /g and lump aluminum is introduced into the melt before pouring the latter into the crystallizer to ensure the nanopowder content of 0.5-7 vol % in the melt; with its further cooling down to the room temperature and extraction from the crystall