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Title: | The effect of hydrogen on strain hardening and fracture mechanism of high-nitrogen austenitic steel |
Authors: | Maier, G. G. Astafurova, E. G. Melnikov, E. V. Moskvina, V. A. Vojtsik, V. F. Galchenko, N. K. Zakharov, G. N. |
Keywords: | водород; деформационное упрочнение; механизмы разрушения; высокопрочные стали; аустенитные стали; электронно-лучевая сварка; азот в стали; гидрирование |
Issue Date: | 2016 |
Publisher: | IOP Publishing |
Citation: | The effect of hydrogen on strain hardening and fracture mechanism of high-nitrogen austenitic steel / G. G. Maier [et al.] // IOP Conference Series: Materials Science and Engineering. — 2016. — Vol. 140 : Interdisciplinary Problems in Additive Technologies : International Seminar, 16–17 December 2015, Tomsk, Russia : [proceedings]. — [012005, 6 p.]. |
Abstract: | High-nitrogen austenitic steels are perspective materials for an electron-beam welding and for producing of wear-resistant coatings, which can be used for application in aggressive atmospheres. The tensile behavior and fracture mechanism of high-nitrogen austenitic steel Fe-20Cr-22Mn-1.5V-0.2C-0.6N (in wt.%) after electrochemical hydrogen charging for 2, 10 and 40 hours have been investigated. Hydrogenation of steel provides a loss of yield strength, uniform elongation and tensile strength. The degradation of tensile properties becomes stronger with increase in charging duration - it occurs more intensive in specimens hydrogenated for 40 hours as compared to ones charged for 2-10 hours. Fracture analysis reveals a hydrogen-induced formation of brittle surface layers up to 6 [mu]m thick after 40 hours of saturation. Hydrogenation changes fracture mode of steel from mixed intergranular-transgranular to mainly transgranular one. |
URI: | http://earchive.tpu.ru/handle/11683/34988 |
Appears in Collections: | Материалы конференций |
Files in This Item:
File | Description | Size | Format | |
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dx.doi.org-10.1088-1757-899X-140-1-012005.pdf | 1,47 MB | Adobe PDF | View/Open |
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