Estimation of the notch sensitivity of a nitrided steel by acoustic emission
| Autor: | A. V. Molyarov, Sergey A. Nikulin, S. O. Rogachev, V. M. Khatkevich, D. Yu. Ozherelkov |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science fungi technology industry and agriculture Metals and Alloys chemistry.chemical_element Fractography 02 engineering and technology 021001 nanoscience & nanotechnology Concentrator 01 natural sciences Nitrogen Stress (mechanics) chemistry Acoustic emission 0103 physical sciences Ultimate tensile strength Composite material 0210 nano-technology Sensitivity (electronics) Nitriding |
| Zdroj: | Russian Metallurgy (Metally). 2017:862-866 |
| ISSN: | 1555-6255 0036-0295 |
| Popis: | The notch sensitivity of sheet corrosion-resistant 08Kh17T steel is estimated in the states before and after high-temperature (1000–1100°C) internal nitriding during tensile tests accompanied by the measurement of acoustic emission signals. A crack in the steel is shown to propagate according to a ductile mechanism is all states. As the nitrogen content increases from 0.60 to 0.85%, the ultimate tensile strength of the steel decreases by 15% in the presence of a stress concentrator and remains substantially higher than the yield strength of the sheet steel without a stress concentrator. |
| Databáze: | OpenAIRE |
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