Microbeam analysis of hydrogen near a crack tip in titanium
| Autor: | A.W. Haberl, B. Lovelace, R. E. Benenson, Hassaram Bakhru |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Nuclear and High Energy Physics
Materials science Ion beam Hydrogen Titanium hydride chemistry.chemical_element Microbeam Metallic hydrogen Physics::Geophysics Elastic recoil detection Condensed Matter::Materials Science chemistry.chemical_compound chemistry Perpendicular Composite material Instrumentation Hydrogen embrittlement |
| Zdroj: | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 261:477-482 |
| ISSN: | 0168-583X |
| DOI: | 10.1016/j.nimb.2007.03.035 |
| Popis: | Microbeam transmission elastic recoil detection (ERD) was used to analyze microscopic hydrogen distributions near a crack tip in Ti foil loaded with an initial atomic hydrogen concentration of 3.0% relative to Ti. A 5.8 MeV He ion beam focused down to the order of 10 μm was scanned in a 500 μm line perpendicular to the crack and approximately 20 μm ahead of the crack tip. ERD line maps were made for a series of increasing stresses which were applied by uniaxial tension perpendicular to the crack. The crack opening displacement (COD) for each stress load was measured from an ion-beam-induced secondary electron emission (SEM) spectrograph of the crack opening. The technique was used to characterize the fracture mechanical properties of α-Ti hydride and demonstrates the use of microbeam analysis for the study of binary hydrogen metal systems. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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