Shalomeev V. Development of scientific - technological foundations of management structure formation and improvement of the quality of castings of magnesium alloys for aircraft engine.

Object of study - magnesium alloys of different chemical composition, the processes of production of castings of magnesium alloys. The aim of the thesis: the development of the scientific base for the metallurgical and process structuring of magnesium alloys to improve the physical, mechanical and operational characteristics of molding responsible naznacheniya.Metody studies - chemical composition of the spectral analysis, differential thermal analysis, optical and electron microscopy with qualitative and quantitative microanalysis phases, electron microprobe analysis, the definition of micro-hardness, mechanical properties and heat resistance. Resolved important scientific problem - development of scientific and technological basis for controlling the structure and properties of magnesium alloys for high-quality casting to improve the reliability and durability of aircraft engines. It is shown that one of the factors that have a decisive influence on the structure and properties of magnesium alloys, intermetallic phase is. Its morphology and topology determined by the composition of magnesium alloys and a number of technological factors in the production of castings. It is shown that technological factors can produce high-quality castings of magnesium alloys with a dispersed structure and a high number of properties to increase reliability and durability of engines. Implemented at JSC "Motor Sich" the economic effect of 291 000 UAH. The expected economic effect of 120 thousand UAH. on one engine. Scope - engineering.