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Analyzing Deformation and Damage of VT1-0 Titanium in Different Structural States by Using Infrared Thermography

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Abstract

This study is devoted to the comparison of strength characteristics in the process of deformation and damage of axially strained VT1-0 titanium in the ultrafine-grained (UFG) and coarse-grained (CG) states. The temperature distributions on the surface of titanium specimens were recorded by means of IR thermography. The VT1-0 titanium in UFG state formed by applying severe plastic deformation is characterized by twice the yield stress and strength limit but half the deformation limit compared to CG titanium. The fracture of CG titanium is accompanied by local powerful generation of heat, while, in UFG titanium, the damage nuclei are less intense and more evenly distributed over the fracture cross-section. The titanium in UFG state, being deformed, utilizes structural channels of energy absorption more efficiently than in the CG state by involving the whole deformed volume in the fracturing process.

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Acknowledgments

The work was partially supported by Program of fundamental investigations of SB RAS III.23.2, 2013-2016 and by NIR Grant # 445 (ONG), State order of the Russian Ministry of Higher Education for 2014–2016.

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Correspondence to O. A. Belyavskaya.

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Sharkeev, Y.P., Vavilov, V.P., Belyavskaya, O.A. et al. Analyzing Deformation and Damage of VT1-0 Titanium in Different Structural States by Using Infrared Thermography. J Nondestruct Eval 35, 42 (2016). https://doi.org/10.1007/s10921-016-0349-5

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  • DOI: https://doi.org/10.1007/s10921-016-0349-5

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