The influence of directional solidification parameters on the structure and properties of the intermetallic alloys

Koljadov E.V., Visik E.M., Gerasimov V. V., Arginbaeva E.G.
UDC
669.017.165
DOI
10.18577/2307-6046-2019-0-3-14-26
Article PDF (Russian) (1.33 MB)
How to cite
Koljadov E.V., Visik E.M., Gerasimov V. V., Arginbaeva E.G. The influence of directional solidification parameters on the structure and properties of the intermetallic alloys // Proceedings of VIAM. 2019. No. 3. DOI: 10.18577/2307-6046-2019-0-3-14-26. URL: https://test.viam.ru/en/journal/2019/3/2
Keywords
intermetallic alloys, directional solidification, single crystal casting equipment, temperature gradient.
Abstract

Comparative studies of the influence of thermal conditions of the process of directional crystallization in plants of two types are presented: liquid metal cooling (UVKH-9A installation) – LMC process (Liquid Metal Cooling) and radiation cooling (ALD installation) – HRS process (High Rate of Solidification ) on the parameters of the cast structure of the VKNA-4UMONO alloy. A comparative quantitative analysis of the microstructure, strength characteristics during short-term tensile tests of castings from VKNA-4UMONO alloy with crystallographic orientation of СGO [111], obtained on installations of two types, and analysis of fractures of VKNA-4U samples of single-crystal structure after short-term tests on stretching. The effect of temperature gradient at the growth front on the structure and mechanical properties of VKNA-4U alloy with KGO [111] and a new alloy for single-crystal casting VIN4 with СGO [001] is shown. The main characteristics of melting and casting plants for casting intermetallic alloys by the method of directional solidification with liquid metal cooling are presented.

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