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Enhancement of the Strength and the Corrosion Resistance of a PT-7M Titanium Alloy Using Rotary Forging
- Source :
- Russian Metallurgy (Metally). 2021:600-610
- Publication Year :
- 2021
- Publisher :
- Pleiades Publishing Ltd, 2021.
-
Abstract
- The effect of severe plastic deformation by rotary forging on the mechanical properties and the corrosion resistance of a pseudo-α-titanium PT-7M alloy is studied. The corrosive character of fracture the fine-grained alloy under hot salt corrosion (HSC) conditions is found to change: pitting corrosion at the onset of recrystallization processes changes into intercrystalline corrosion. The HSC resistance of the fine-grained PT-7M titanium alloy is shown to depend on the structure–phase state of grain boundaries, whose intense migration with developing recrystallization leads to “sweeping out” of corrosion-hazardous alloying elements (aluminum, zirconium) from the crystal lattice of the titanium alloy.
Details
- ISSN :
- 15556255 and 00360295
- Volume :
- 2021
- Database :
- OpenAIRE
- Journal :
- Russian Metallurgy (Metally)
- Accession number :
- edsair.doi...........344412b4c36ed25bf2845321b4f27389