Hydrogenous Phase Concentration: Impact on the Structural Condition and Fracture Mechanics of Technically Pure Titanium After Different Conditions of Hydrogenation
O. T. Cherney1, V.A. Zotova2, А.A. Permovsky3, Z. V. Smirnova4, O.I. Vaganova5
1O.T. Cherney, Ph.D. Department of Materials Science, Nizhny Novgorod State Technical University, Novgorod, Russia.
2V.A. Zotova, Ph.D. Department of Mechanical Engineering, Gorky Polytechnic Institute, Russia.
3А.A. Permovsky, Department of Engineering, Pedagogical University, Vocational Training, Volga.
4O.I. Vaganova, Ph.D. Department of Engineering, Pedagogical Institute, Specialty “Vocational training”, Volga.
5Z.V. Smirnova, Ph.D. Nizhny Novgorod State Pedagogical University Technology, Russia.
Manuscript received on 07 April 2019 | Revised Manuscript received on 20 April 2019 | Manuscript published on 30 April 2019 | PP: 535-539 | Volume-8 Issue-6, April 2019 | Retrieval Number: E3096038519/19©BEIESP
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Abstract: The high rate of mechanical strength places technically pure titanium on a par with high-tension steel and is a strong reason for using this material in various branches of industry and medicine. However, when the material is being processed, a number of difficulties arise related to the chemical activity of titanium. That’s why the study of the impact on structural condition and fracture mechanics of technically pure titanium after different conditions of hydrogenation was carried out. Technical titanium VT1-0 as received was selected as a material for the experiment. Flat samples with operation part dimension 18×5×2 mm were produced for tensile test, surface texture analysis, and X-ray crystal analysis.As a result of the experiment, data of changes of macrostresses, microstresses, sizes of blocks of mosaic and concentrations of titanium hydride against the limit solubility of hydride phase in titanium at the surface of metal depending on the duration of cathode electronic degreasing were obtained. It was noted that there are hydride seeds in the surface layer of the metal at the initial stages of hydrogenation and their growth and separation in an individual phase is possible at later stages.
Keyword: Fracture Mechanics, Hydrogenation, Titanium Hydride Concentrations
Scope of the Article: Theoretical and Applied Fracture Mechanics