Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 785, Issue -, Pages 1233-1244Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2019.01.268
Keywords
Titanium alloys; Fine-grained structure; Rotary swaging; Strength; Hot salt corrosion; Grain boundary; Diffusion
Categories
Funding
- Russian Science Foundation [16-13-00066]
- Russian Science Foundation [16-13-00066] Funding Source: Russian Science Foundation
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The research aims to analyze the impact that severe plastic deformation arising during Rotary Swaging has on mechanical properties and corrosion resistance of a near-alpha-titanium alloy Ti-2.5Al-2.6Zr (Russian industrial name PT7M). The nature of corrosion decay in fine-grained alloys caused by hot salt corrosion is known to vary from pit corrosion to intercrystalline corrosion at the onset of recrystallization processes. Resistance to hot salt corrosion in a fine-grained titanium alloy Ti-2.5Al-2.6Zr is shown to depend on the structural-phase state of grain boundaries that varies during their migration as a result of covering corrosive doping elements (aluminum, zirconium) distributed in the crystal lattice of a titanium alloy. (C) 2019 Elsevier B.V. All rights reserved.
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