Influence of Thermal Treatment on SCC and HE Susceptibility of Supermartensitic Stainless Steel 16Cr5NiMo
| Autor: | Linda Bacchi, Serena Corsinovi, Renzo Valentini, Marco Romanelli, Fabio Biagini, Michele Villa |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Weldability 02 engineering and technology lcsh:Technology 01 natural sciences Article Corrosion hydrogen embrittlement Ferrite (iron) 0103 physical sciences General Materials Science Tempering Stress corrosion cracking lcsh:Microscopy Hydrogen embrittlement Instantaneous strain hardening coefficient Retained austenite Sour environment Supermartensitic stainless steels Tempering temperature lcsh:QC120-168.85 010302 applied physics Austenite retained austenite lcsh:QH201-278.5 lcsh:T Metallurgy tempering temperature supermartensitic stainless steels instantaneous strain hardening coefficient 021001 nanoscience & nanotechnology stress corrosion cracking lcsh:TA1-2040 Martensite lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering lcsh:Engineering (General). Civil engineering (General) 0210 nano-technology lcsh:TK1-9971 sour environment |
| Zdroj: | Materials Volume 13 Issue 7 Materials, Vol 13, Iss 1643, p 1643 (2020) |
| ISSN: | 1996-1944 |
| Popis: | A 16Cr5NiMo supermartensitic stainless steel was subjected to different tempering treatments and analyzed by means of permeation tests and slow strain rate tests to investigate the effect of different amounts of retained austenite on its hydrogen embrittlement susceptibility. The 16Cr5NiMo steel class is characterized by a very low carbon content. It is the new variant of 13Cr4Ni. These steels are used in many applications, for example, compressors for sour environments, offshore piping, naval propellers, aircraft components and subsea applications. The typical microstructure is a soft-tempered martensite very close to a body-centered cubic, with a retained austenite fraction and limited &delta ferrite phase. Supermartensitic stainless steels have high mechanical properties, together with good weldability and corrosion resistance. The amount of retained austenite is useful to increase low temperature toughness and stress corrosion cracking resistance. Experimental techniques allowed us to evaluate diffusion coefficients and the mechanical behaviour of metals in stress corrosion cracking (SCC) conditions. |
| Databáze: | OpenAIRE |
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