APPLICATION OF LASER TREATMENT FOR HARDENING PARTS OF GAS TURBINE ENGINES FROM TITANIUM ALLOYS

作者：Girzhon V V^*; Ovchinnikov A V

来源：Metal Science and Heat Treatment, 2017, 58(11-12): 719-723.

DOI：10.1007/s11041-017-0084-2

• titanium alloy
• helical extrusion
• laser treatment
• microhardness

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 alpha"-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.

• 出版日期2017-3