Influence of Technological Parameters of Direct Laser Deposition Process on the Structure and Properties of Deposited Products from Alloy Ti-6Al-4V

Abstract

The technology of direct laser deposition is the most promising for using in various industries. One of the most interesting areas for using this technology is an aviation industry. Due to their unique properties, titanium alloys are widely used in the aircraft industry for gas turbine engine components. In this paper, the effect of DLD process parameters on defect formation and structure is considered. The influence of energy density on the mechanical properties of parts is determined.

Structure and Phase Composition of Ti-6Al-4V Samples Produced by Direct Laser Deposition

“…Effects of post-heat treatment cooling rate. The choice of the cooling method after heat treatment also affects on the formation of the phase composition and the mechanical properties of the products: the authors suggested three cooling methods: water-cooling, in air and the furnace-cooled [15]. The measured average air-cooling rate from 1100°C to 500°C was about 20°C/s which result in formation of a small volume fraction of α' martensite along with the α phase and in addition to the previously existing β phase.…”