Application of Laser Treatment for Hardening Parts of Gas Turbine Engines from Titanium Alloys


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X-ray diffraction analysis and light microscopy are used to study the structure of surface layers of helically extruded specimens of titanium alloy VT25U after laser fusion of the surface. It is shown that the rates of cooling of the melt promote formation of a martensitic α″-phase in the zone of laser fusion and of a submicrocrystalline microstructure. The microhardness in the zone of fusion of the initial specimens exceeds the microhardness of the specimens after the extrusion.

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V. Girzhon

Zaporozhe National University

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Email: vgirzhon@gmail.com
乌克兰, Zaporozhe

A. Ovchinnikov

Zaporozhe National Technical University

Email: vgirzhon@gmail.com
乌克兰, Zaporozhe

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