Nanostructure formation and its effects on the mechanical properties of kinetic sprayed titanium coating
| Autor: | Changhee Lee, Gyuyeol Bae, Kicheol Kang, Jay-Jung Kim |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Materials science
Nanostructure Mechanical Engineering Metallurgy chemistry.chemical_element engineering.material Strain hardening exponent Condensed Matter Physics Microstructure chemistry Coating Mechanics of Materials engineering General Materials Science Grain boundary Severe plastic deformation Composite material Dislocation Titanium |
| Zdroj: | Materials Science and Engineering: A. 527:6313-6319 |
| ISSN: | 0921-5093 |
| DOI: | 10.1016/j.msea.2010.06.037 |
| Popis: | The nanostructure formation during kinetic spraying of commercially pure titanium (CP-Ti) were studied using transmission electron microscopy (TEM) and finite element modeling (FEM) considering conductive heat transfer. The high-velocity impacted particles, subjected to severe plastic deformation (SPD), were found to be tightly bonded, and also considerably homogeneous and randomly orientated equiaxed nanograins, including some recovered grains having a low dislocation density, were found to be formed over wide areas inside the coating due to strain accumulation and the resultant thermal history enhanced by subsequent impacts of the particles. The bimodal grain structure consisting of both larger grains having high-density dislocations (>250 nm) and smaller dislocation-free grains with non-equilibrium grain boundaries ( |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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