Abstract
Improvement in the mechanical properties of sheet two-phase high-strength titanium alloy VT23 due to impact-oscillatory loading and the use of carbon nanosolutions at room temperature was tested experimentally. It was shown that in addition to obtaining a significant increase in the initial plastic deformation of the alloy, it is possible to strengthen the surface layers of the alloy by a factor of 8.4% at a time via the impulse introduction of energy into the alloy and the use of carbon nanosolutions. Using X-ray photoelectron spectroscopy (XPS), it was first found that strengthening of the surface layers of the titanium alloy at a given load, in line with using a carbon nanosolution, leads to the formation of a mixture of titanium oxide and titanium carbide or oxycarbide of type TiO2−xCx on the surface.
Highlights
Fundamental research on high-strength titanium alloys and their use in the military, aviation, and space industries have proven their high-performance properties [1,2,3,4,5]
We propose an effective method for reproducing dynamic non-equilibrium processes (DNP)
When evaluating the effect of impact-oscillatory loading on the improvement of the plastic properties of the titanium VT23 alloy, the following method of controlling the impulse introduction of energy into the titanium alloy was used; a number of specimens were statically loaded to a growing
Summary
Fundamental research on high-strength titanium alloys and their use in the military, aviation, and space industries have proven their high-performance properties [1,2,3,4,5]. An explicit consequence of the significant structural transformations of materials under impact-oscillatory loading is the appearance of microextrusions on the specimen surface due to the formation of less dense dissipative structures [22] This effect indicates changes in the structure and mechanical properties in the volume of materials, but, above all, in the surface layers. As a result of pre-wetting with a given colloidal solution under the dynamic non-balanced process, hard alloy nanoparticles located on the surface of the test material are “embossed” into the surface due to the Metals 2019, 9, x FOR PEER REVIEW of microextrusions, which leads to significant structural changes in the surface layer with areoccurrence “embossed”.
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