Microstructural Features and Surface Hardening of Ultrafine-Grained Ti-6Al-4V Alloy through Plasma Electrolytic Polishing and Nitrogen Ion Implantation
| Autor: | V.D. Sitdikov, Roman R. Valiev, Iuliia Mikhailovna Modina, Marina K. Smyslova, Anatoliy M. Smyslov, Irina P. Semenova |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Alloy Polishing 02 engineering and technology Substrate (electronics) engineering.material 01 natural sciences Indentation hardness titanium alloys 0103 physical sciences ion implantation General Materials Science Surface layer modified layer Composite material long-range effect 010302 applied physics Mining engineering. Metallurgy substructure TN1-997 Metals and Alloys Titanium alloy 021001 nanoscience & nanotechnology Microstructure Ion implantation ultra-fine grained structure microhardness engineering 0210 nano-technology plasma electrolytic polishing |
| Zdroj: | Metals, Vol 11, Iss 696, p 696 (2021) Metals Volume 11 Issue 5 |
| ISSN: | 2075-4701 |
| Popis: | This work studies a near-surface layer microstructure in Ti-6Al-4V alloy samples subjected to plasma electrolytic polishing (PEP) and subsequent high-energy ion implantation with nitrogen (II). Samples with a conventional coarse-grained (CG) structure with an average α-phase size of 8 μm and an ultrafine-grained (UFG) structure (α-phase size up to 0.35 μm) produced by equal channel angular pressing were used in the studies. Features of phase composition and substructure in the thin surface layers are shown after sequential processing by PEP and II of both substrates with CG and UFG structures. Irrespective of a substrate structure, the so-called “long-range effect” was observed, which manifested itself in enhanced microhardness to a depth of surface layer up to 40 μm, exceeding the penetration distance of an implanted ion he. The effect of a UFG structure on depth and degree of surface hardening after PEP and ion-implantation is discussed. |
| Databáze: | OpenAIRE |
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