Technological Processes for Increasing the Cavitation Erosion Resistance of Nimonic 80A Superalloys
Nickel-based superalloys are frequently used to manufacture the components that operate under cavitation erosion conditions, such as aircraft gas turbine construction, nuclear power systems, steam turbine power plants, and chemical and petrochemical industries. Their poor performance in terms of cav...
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MDPI AG
2023-04-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/16/8/3206 |
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| author | Cosmin Belin Ion Mitelea Ilare Bordeașu Corneliu Marius Crăciunescu Ion-Dragoș Uțu |
| author_facet | Cosmin Belin Ion Mitelea Ilare Bordeașu Corneliu Marius Crăciunescu Ion-Dragoș Uțu |
| author_sort | Cosmin Belin |
| collection | DOAJ |
| description | Nickel-based superalloys are frequently used to manufacture the components that operate under cavitation erosion conditions, such as aircraft gas turbine construction, nuclear power systems, steam turbine power plants, and chemical and petrochemical industries. Their poor performance in terms of cavitation erosion leads to a significant reduction in service life. This paper compares four technological treatment methods to improve cavitation erosion resistance. The cavitation erosion experiments were carried out on a vibrating device with piezoceramic crystals in accordance with the prescriptions of the ASTM G32—2016 standard. The maximum depth of surface damage, the erosion rate, and the morphologies of the eroded surfaces during the cavitation erosion tests were characterized. The results indicate that the thermochemical plasma nitriding treatment can reduce mass losses and the erosion rate. The cavitation erosion resistance of the nitrided samples is approximately 2 times higher than that of the remelted TIG surfaces, approximately 2.4 times higher than that of the artificially aged hardened substrate, and 10.6 times higher than that of the solution heat-treated substrate. The improvement in cavitation erosion resistance for Nimonic 80A superalloy is attributed to the finishing of the surface microstructure, graining, and the presence of residual compressive stresses, factors that prevent crack initiation and propagation, thus blocking material removal during cavitation stresses. |
| first_indexed | 2024-03-11T04:47:15Z |
| format | Article |
| id | doaj.art-0cd1b41c1797463380776f455c476e05 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T04:47:15Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-0cd1b41c1797463380776f455c476e052023-11-17T20:14:41ZengMDPI AGMaterials1996-19442023-04-01168320610.3390/ma16083206Technological Processes for Increasing the Cavitation Erosion Resistance of Nimonic 80A SuperalloysCosmin Belin0Ion Mitelea1Ilare Bordeașu2Corneliu Marius Crăciunescu3Ion-Dragoș Uțu4Department of Materials and Fabrication Engineering, Politehnica University Timisoara, Bulevardul Mihai Viteazul nr.1, 300222 Timisoara, RomaniaDepartment of Materials and Fabrication Engineering, Politehnica University Timisoara, Bulevardul Mihai Viteazul nr.1, 300222 Timisoara, RomaniaDepartment of Mechanical Machines, Equipment and Transports, Politehnica University Timisoara, Bulevardul Mihai Viteazul nr.1, 300222 Timisoara, RomaniaDepartment of Materials and Fabrication Engineering, Politehnica University Timisoara, Bulevardul Mihai Viteazul nr.1, 300222 Timisoara, RomaniaDepartment of Materials and Fabrication Engineering, Politehnica University Timisoara, Bulevardul Mihai Viteazul nr.1, 300222 Timisoara, RomaniaNickel-based superalloys are frequently used to manufacture the components that operate under cavitation erosion conditions, such as aircraft gas turbine construction, nuclear power systems, steam turbine power plants, and chemical and petrochemical industries. Their poor performance in terms of cavitation erosion leads to a significant reduction in service life. This paper compares four technological treatment methods to improve cavitation erosion resistance. The cavitation erosion experiments were carried out on a vibrating device with piezoceramic crystals in accordance with the prescriptions of the ASTM G32—2016 standard. The maximum depth of surface damage, the erosion rate, and the morphologies of the eroded surfaces during the cavitation erosion tests were characterized. The results indicate that the thermochemical plasma nitriding treatment can reduce mass losses and the erosion rate. The cavitation erosion resistance of the nitrided samples is approximately 2 times higher than that of the remelted TIG surfaces, approximately 2.4 times higher than that of the artificially aged hardened substrate, and 10.6 times higher than that of the solution heat-treated substrate. The improvement in cavitation erosion resistance for Nimonic 80A superalloy is attributed to the finishing of the surface microstructure, graining, and the presence of residual compressive stresses, factors that prevent crack initiation and propagation, thus blocking material removal during cavitation stresses.https://www.mdpi.com/1996-1944/16/8/3206Nimonic 80Acavitation erosionalternative technologies |
| spellingShingle | Cosmin Belin Ion Mitelea Ilare Bordeașu Corneliu Marius Crăciunescu Ion-Dragoș Uțu Technological Processes for Increasing the Cavitation Erosion Resistance of Nimonic 80A Superalloys Materials Nimonic 80A cavitation erosion alternative technologies |
| title | Technological Processes for Increasing the Cavitation Erosion Resistance of Nimonic 80A Superalloys |
| title_full | Technological Processes for Increasing the Cavitation Erosion Resistance of Nimonic 80A Superalloys |
| title_fullStr | Technological Processes for Increasing the Cavitation Erosion Resistance of Nimonic 80A Superalloys |
| title_full_unstemmed | Technological Processes for Increasing the Cavitation Erosion Resistance of Nimonic 80A Superalloys |
| title_short | Technological Processes for Increasing the Cavitation Erosion Resistance of Nimonic 80A Superalloys |
| title_sort | technological processes for increasing the cavitation erosion resistance of nimonic 80a superalloys |
| topic | Nimonic 80A cavitation erosion alternative technologies |
| url | https://www.mdpi.com/1996-1944/16/8/3206 |
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