Effect of Zr–Ti deoxidisation on the hydrogen-induced cracking of X65 pipeline steels
| Autor: | O. Isayev, O. Hress, L. Cheng, K. M. Wu, Y. Du, Y. Li |
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| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Electrolysis Materials science Hydrogen Mechanical Engineering Pipeline (computing) Metallurgy chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences law.invention Cracking chemistry Mechanics of Materials law 0103 physical sciences General Materials Science Electron microscope Inclusion (mineral) 0210 nano-technology Spectroscopy |
| Zdroj: | Materials Science and Technology. 32:728-735 |
| ISSN: | 1743-2847 0267-0836 |
| Popis: | The effect of Zr–Ti combined deoxidisation, compared with the traditional Al deoxidisation, on inclusion and microstructure in X65 pipeline steels was investigated by means of analytical characterisation techniques such as non-aqueous solution electrolysis method, optical and electron microscopy in conjunction with energy dispersive X-ray spectroscopy and hydrogen-induced cracking test. Large inclusions as well as elongated MnS particles were observed in the conventional Al-deoxidised steel. However, the type and size of inclusions were efficiently controlled in the Zr–Ti-deoxidised steel, in which MnS particles were spheroidised and evenly dispersed in the matrix. Hydrogen-induced cracking test results showed that centre segregation was the main factor accountable for hydrogen-induced cracking in X65 pipeline steels. The Zr–Ti-deoxidised X65 pipeline steel revealed better HIC-resistance performance. |
| Databáze: | OpenAIRE |
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