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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References
V. A. Boguslaev, “Novel technologies of creation, production, operation and reconditioning of gas turbine engines,” Vestn. Dvigatelestroen., No. 1, 6 – 9 (2002).
A. D. Koval’, L. P. Stepanov, G. V. Pukhal’skaya, and O. L. Luk’yanenko, “Effect of treatment of compressor blades by balls in magnetic field on formation of parameters of surface layer and strength characteristics,” Vestn. Dvigatelestroen., No. 2, 92 – 102 (2009).
G. A. Salishchev, R. M. Galeev, S. P. Malysheva, et al., “Formation of submicrocrystalline structure in titanium and titanium alloys and their mechanical properties,” Metalloved. Term. Obrab. Met., No. 2, 19 – 26 (2006).
R. Z. Valiev, N. A. Krasilnikov, and N. K. Tsenev, “Plastic deformation of alloys with submicron-grained structure,” Mater. Sci. Eng., A137, 35 – 40 (1991).
R. Z. Valiev, “Creation of nanostructured metals and alloys with unique properties using severe plastic deformation,” Ross. Nanotekhnol., No. 11, 208 – 216 (2006).
S. G. Glazunov and V. N. Moiseev, Structural Titanium Alloys [in Russian], Metallurgiya, Moscow (1974), 368 p.
F. L. Lokshin, Special Features of Phase Transformations in Titanium Alloys [in Russian], Nauka, Moscow (1972), 39 p.
Y. Beygelzimer, “Grain refinement versus voids accumulation during severe plastic deformation of polycrystals: mathematical simulation,” Mechan. Mater., 37, 735 – 767 (2005).
V. Ya. Panchenko (ed.), Laser Processes of Treatment of Materials: Recent Problems of Fundamental Research and Applied Developments [in Russian], Fizmatlit, Moscow (2009), 663 p.
D. I. Anpilogov and V. V. Girzhon, “Effect of the time factor of pulsed laser radiation on the temperature field in the heat-affected zone,” Ukr. Fiz. Zh., 42(3), 301 – 304 (1997).
E. I. Pleshakov, “Effect of laser hardening and carburizing on the structure and properties of surface layer of titanium alloy VT3-1,” in: Optimization of Production Processes and Technical Control in Machine Building and Instrument Making [in Ukrainian], Lvivska Politekhnika, Lvov (2000), 144 p.
S. N. Bratushka and L. V. Malikov, “Ion-plasma modification of titanium alloys,” Vopr. Atom. Nauki Tekhn., No. 6, 126 – 140 (2011).
V. V. Girzhon A. V. Smolyakov and I. V. Tantsyura, “Structural state of surface layers of aluminum after laser alloying with a mixture of copper and iron powders,” Fiz. Met. Metalloved., 106(4), 1 – 6 (2008).
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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 12, pp. 0 – 0, December, 2016.
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Girzhon, V.V., Ovchinnikov, A.V. Application of Laser Treatment for Hardening Parts of Gas Turbine Engines from Titanium Alloys. Met Sci Heat Treat 58, 719–723 (2017). https://doi.org/10.1007/s11041-017-0084-2
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DOI: https://doi.org/10.1007/s11041-017-0084-2