Design of high-strength martensitic steels by novel mixed-metal nanoprecipitates for high toughness and suppressed hydrogen embrittlement
To obtain a fundamental understanding of mechanisms of hydrogen embrittlement (HE) and its prevention in advanced high-strength steels containing novel nanoscale mixed-metal precipitates, it is necessary to study local microstructure, H trapping, and crack path with new multiscale experimental and s...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-10-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127523007384 |
| _version_ | 1797647914095345664 |
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| author | Masoud Moshtaghi Emad Maawad Artenis Bendo Andreas Krause Juraj Todt Jozef Keckes Mahdieh Safyari |
| author_facet | Masoud Moshtaghi Emad Maawad Artenis Bendo Andreas Krause Juraj Todt Jozef Keckes Mahdieh Safyari |
| author_sort | Masoud Moshtaghi |
| collection | DOAJ |
| description | To obtain a fundamental understanding of mechanisms of hydrogen embrittlement (HE) and its prevention in advanced high-strength steels containing novel nanoscale mixed-metal precipitates, it is necessary to study local microstructure, H trapping, and crack path with new multiscale experimental and simulation approach. Spatially resolved hydrogen mapping via SKPFM is used together with investigation of the crack path using high-resolution EBSD and HMPT, and global trapping behavior of the alloys by TDS. These results are combined with newly introduced method to elucidate real-time distribution of hydrogen in the alloy using high-energy synchrotron X-ray diffraction (HES-XRD). Mixed-metal precipitates improves HE resistance of the alloy, due to nature of the trapping sites, e.g. irreversible H-trapping by carbon vacancies inside novel nanoprecipitates and high total length of PAGBs. This is because of lower possibility of build-up of critical local hydrogen content at PAGBs for intergranular hydrogen-assisted cracking due to hydrogen-enhanced decohesion mechanism. Less weakly trapped hydrogen also reduces frequency of dislocation activation and enhanced dislocation slip in {011} slip plane due to hydrogen-enhanced localized plasticity in regions with affinity for transgranular hydrogen-assisted cracking at lower local hydrogen content. Direct evidence of carbon vacancies in novel nanoprecipitates is observed for the first time via HAADF-STEM. |
| first_indexed | 2024-03-11T15:24:32Z |
| format | Article |
| id | doaj.art-b5cc89532db84829864b1871f636ac8e |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-03-11T15:24:32Z |
| publishDate | 2023-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-b5cc89532db84829864b1871f636ac8e2023-10-28T05:06:27ZengElsevierMaterials & Design0264-12752023-10-01234112323Design of high-strength martensitic steels by novel mixed-metal nanoprecipitates for high toughness and suppressed hydrogen embrittlementMasoud Moshtaghi0Emad Maawad1Artenis Bendo2Andreas Krause3Juraj Todt4Jozef Keckes5Mahdieh Safyari6Chair of General and Analytical Chemistry, University of Leoben, Franz Josef-Straße 18, 8700 Leoben, Austria; Corresponding author.Helmholtz-Zentrum Hereon, Institute of Materials Physics, Max-Planck-Str. 1, Geesthacht, GermanyDepartment of Materials, The University of Manchester, Oxford Road, Manchester M13 9PL, United KingdomDepartment of Materials Science and Applied Mathematics, Malmö University, SE-211 19 Malmö, SwedenDepartment of Materials Science, Montanuniversität Leoben, Franz-Josef-Strasse 18, 8700 Leoben, Austria; Erich Schmid Institute for Materials Science, Austrian Academy of Sciences, Leoben, AustriaDepartment of Materials Science, Montanuniversität Leoben, Franz-Josef-Strasse 18, 8700 Leoben, Austria; Erich Schmid Institute for Materials Science, Austrian Academy of Sciences, Leoben, AustriaLKR Light Metals Technologies Ranshofen, Austrian Institute of Technology, 5282 Ranshofen, Austria; Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, JapanTo obtain a fundamental understanding of mechanisms of hydrogen embrittlement (HE) and its prevention in advanced high-strength steels containing novel nanoscale mixed-metal precipitates, it is necessary to study local microstructure, H trapping, and crack path with new multiscale experimental and simulation approach. Spatially resolved hydrogen mapping via SKPFM is used together with investigation of the crack path using high-resolution EBSD and HMPT, and global trapping behavior of the alloys by TDS. These results are combined with newly introduced method to elucidate real-time distribution of hydrogen in the alloy using high-energy synchrotron X-ray diffraction (HES-XRD). Mixed-metal precipitates improves HE resistance of the alloy, due to nature of the trapping sites, e.g. irreversible H-trapping by carbon vacancies inside novel nanoprecipitates and high total length of PAGBs. This is because of lower possibility of build-up of critical local hydrogen content at PAGBs for intergranular hydrogen-assisted cracking due to hydrogen-enhanced decohesion mechanism. Less weakly trapped hydrogen also reduces frequency of dislocation activation and enhanced dislocation slip in {011} slip plane due to hydrogen-enhanced localized plasticity in regions with affinity for transgranular hydrogen-assisted cracking at lower local hydrogen content. Direct evidence of carbon vacancies in novel nanoprecipitates is observed for the first time via HAADF-STEM.http://www.sciencedirect.com/science/article/pii/S0264127523007384Hydrogen embrittlementMartensitic steelsAtome probe tomographyExperimental-simulations synergyHigh-energy synchrotron X-ray diffractionHydrogen mapping |
| spellingShingle | Masoud Moshtaghi Emad Maawad Artenis Bendo Andreas Krause Juraj Todt Jozef Keckes Mahdieh Safyari Design of high-strength martensitic steels by novel mixed-metal nanoprecipitates for high toughness and suppressed hydrogen embrittlement Materials & Design Hydrogen embrittlement Martensitic steels Atome probe tomography Experimental-simulations synergy High-energy synchrotron X-ray diffraction Hydrogen mapping |
| title | Design of high-strength martensitic steels by novel mixed-metal nanoprecipitates for high toughness and suppressed hydrogen embrittlement |
| title_full | Design of high-strength martensitic steels by novel mixed-metal nanoprecipitates for high toughness and suppressed hydrogen embrittlement |
| title_fullStr | Design of high-strength martensitic steels by novel mixed-metal nanoprecipitates for high toughness and suppressed hydrogen embrittlement |
| title_full_unstemmed | Design of high-strength martensitic steels by novel mixed-metal nanoprecipitates for high toughness and suppressed hydrogen embrittlement |
| title_short | Design of high-strength martensitic steels by novel mixed-metal nanoprecipitates for high toughness and suppressed hydrogen embrittlement |
| title_sort | design of high strength martensitic steels by novel mixed metal nanoprecipitates for high toughness and suppressed hydrogen embrittlement |
| topic | Hydrogen embrittlement Martensitic steels Atome probe tomography Experimental-simulations synergy High-energy synchrotron X-ray diffraction Hydrogen mapping |
| url | http://www.sciencedirect.com/science/article/pii/S0264127523007384 |
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