Structure and Mechanical Properties of Shipbuilding Steel Obtained by Direct Laser Deposition and Cold Rolling
The study of the formation of microstructural features of low-alloy bainite-martensitic steel 09CrNi2MoCu are of particular interest in additive technologies. In this paper, we present a study of cold-rolled samples after direct laser deposition (DLD). We investigated deposited samples after cold pl...
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MDPI AG
2021-12-01
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| Online Access: | https://www.mdpi.com/1996-1944/14/23/7393 |
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| author | Ruslan Mendagaliyev Oleg Zotov Rudolf Korsmik Grigoriy Zadykyan Nadezhda Lebedeva Olga Klimova-Korsmik |
| author_facet | Ruslan Mendagaliyev Oleg Zotov Rudolf Korsmik Grigoriy Zadykyan Nadezhda Lebedeva Olga Klimova-Korsmik |
| author_sort | Ruslan Mendagaliyev |
| collection | DOAJ |
| description | The study of the formation of microstructural features of low-alloy bainite-martensitic steel 09CrNi2MoCu are of particular interest in additive technologies. In this paper, we present a study of cold-rolled samples after direct laser deposition (DLD). We investigated deposited samples after cold plastic deformation with different degrees of deformation compression (50, 60 and 70%) of samples from steel 09CrNi2MoCu. The microstructure and mechanical properties of samples in the initial state and after heat treatment (HT) were analyzed and compared with the samples obtained after cold rolling. The effect on static tensile strength and impact toughness at −40 °C in the initial state and after cold rolling was investigated. The mechanical properties and characteristics of fracture in different directions were determined. Optimal modes and the degree of cold rolling deformation compression required to obtain balanced mechanical properties of samples obtained by additive method were determined. The influence of structural components and martensitic-austenitic phase on the microhardness and mechanical properties of the obtained samples was determined. |
| first_indexed | 2024-03-10T04:49:56Z |
| format | Article |
| id | doaj.art-ff104169ecf246bebd65cbbe2a272a00 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T04:49:56Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-ff104169ecf246bebd65cbbe2a272a002023-11-23T02:42:50ZengMDPI AGMaterials1996-19442021-12-011423739310.3390/ma14237393Structure and Mechanical Properties of Shipbuilding Steel Obtained by Direct Laser Deposition and Cold RollingRuslan Mendagaliyev0Oleg Zotov1Rudolf Korsmik2Grigoriy Zadykyan3Nadezhda Lebedeva4Olga Klimova-Korsmik5World-Class Research Center “Advanced Digital Technologies”, St. Petersburg State Marine Technical University, 190121 St. Petersburg, RussiaInstitute of Metallurgy, Mechanical Engineering and Transport, Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, RussiaWorld-Class Research Center “Advanced Digital Technologies”, St. Petersburg State Marine Technical University, 190121 St. Petersburg, RussiaInstitute of Metallurgy, Mechanical Engineering and Transport, Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, RussiaWorld-Class Research Center “Advanced Digital Technologies”, St. Petersburg State Marine Technical University, 190121 St. Petersburg, RussiaWorld-Class Research Center “Advanced Digital Technologies”, St. Petersburg State Marine Technical University, 190121 St. Petersburg, RussiaThe study of the formation of microstructural features of low-alloy bainite-martensitic steel 09CrNi2MoCu are of particular interest in additive technologies. In this paper, we present a study of cold-rolled samples after direct laser deposition (DLD). We investigated deposited samples after cold plastic deformation with different degrees of deformation compression (50, 60 and 70%) of samples from steel 09CrNi2MoCu. The microstructure and mechanical properties of samples in the initial state and after heat treatment (HT) were analyzed and compared with the samples obtained after cold rolling. The effect on static tensile strength and impact toughness at −40 °C in the initial state and after cold rolling was investigated. The mechanical properties and characteristics of fracture in different directions were determined. Optimal modes and the degree of cold rolling deformation compression required to obtain balanced mechanical properties of samples obtained by additive method were determined. The influence of structural components and martensitic-austenitic phase on the microhardness and mechanical properties of the obtained samples was determined.https://www.mdpi.com/1996-1944/14/23/7393direct laser deposition (DLD)direct metal deposition (DMD)additive manufacturing (AM)bainitic steelscold-resistant steelscold rolling |
| spellingShingle | Ruslan Mendagaliyev Oleg Zotov Rudolf Korsmik Grigoriy Zadykyan Nadezhda Lebedeva Olga Klimova-Korsmik Structure and Mechanical Properties of Shipbuilding Steel Obtained by Direct Laser Deposition and Cold Rolling Materials direct laser deposition (DLD) direct metal deposition (DMD) additive manufacturing (AM) bainitic steels cold-resistant steels cold rolling |
| title | Structure and Mechanical Properties of Shipbuilding Steel Obtained by Direct Laser Deposition and Cold Rolling |
| title_full | Structure and Mechanical Properties of Shipbuilding Steel Obtained by Direct Laser Deposition and Cold Rolling |
| title_fullStr | Structure and Mechanical Properties of Shipbuilding Steel Obtained by Direct Laser Deposition and Cold Rolling |
| title_full_unstemmed | Structure and Mechanical Properties of Shipbuilding Steel Obtained by Direct Laser Deposition and Cold Rolling |
| title_short | Structure and Mechanical Properties of Shipbuilding Steel Obtained by Direct Laser Deposition and Cold Rolling |
| title_sort | structure and mechanical properties of shipbuilding steel obtained by direct laser deposition and cold rolling |
| topic | direct laser deposition (DLD) direct metal deposition (DMD) additive manufacturing (AM) bainitic steels cold-resistant steels cold rolling |
| url | https://www.mdpi.com/1996-1944/14/23/7393 |
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