High-temperature oxidation behavior of carbon doped CoCrNi medium entropy alloy fabricated by laser powder bed fusion
The oxidation behaviour of two CoCrNi medium entropy alloys with carbon contents of 0.25 at% and 0.75 at% (0.25C MEA and 0.75C MEA) was investigated. These alloys were designed via laser powder bed fusion (L-PBF) to enhance mechanical properties by controlling in-situ nano precipitates. High-tempera...
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Elsevier
2025-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424030035 |
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| author | Soobin Kim So-Yeon Park Kee-Ahn Lee |
| author_facet | Soobin Kim So-Yeon Park Kee-Ahn Lee |
| author_sort | Soobin Kim |
| collection | DOAJ |
| description | The oxidation behaviour of two CoCrNi medium entropy alloys with carbon contents of 0.25 at% and 0.75 at% (0.25C MEA and 0.75C MEA) was investigated. These alloys were designed via laser powder bed fusion (L-PBF) to enhance mechanical properties by controlling in-situ nano precipitates. High-temperature oxidation tests were conducted at 900, 1000, and 1100 °C for 24 h in an air-like atmosphere. The 0.25C MEA exhibited weight changes of 0.052–0.852 mg/cm2, while the 0.75C MEA showed higher changes of 0.256–1.148 mg/cm2, highlighting the significant impact of carbon on oxidation resistance. Carbide formation was suggested to play an important role in determining internal oxidation behaviour. |
| format | Article |
| id | doaj-art-fb365884c8ae47ef8f4958615ffa3e37 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
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| series | Journal of Materials Research and Technology |
| spelling | doaj-art-fb365884c8ae47ef8f4958615ffa3e372025-01-19T06:25:48ZengElsevierJournal of Materials Research and Technology2238-78542025-01-013424302442High-temperature oxidation behavior of carbon doped CoCrNi medium entropy alloy fabricated by laser powder bed fusionSoobin Kim0So-Yeon Park1Kee-Ahn Lee2Department of Materials Science and Engineering, Inha University, Incheon, 22212, Republic of KoreaDepartment of Materials Science and Engineering, Inha University, Incheon, 22212, Republic of KoreaCorresponding author.; Department of Materials Science and Engineering, Inha University, Incheon, 22212, Republic of KoreaThe oxidation behaviour of two CoCrNi medium entropy alloys with carbon contents of 0.25 at% and 0.75 at% (0.25C MEA and 0.75C MEA) was investigated. These alloys were designed via laser powder bed fusion (L-PBF) to enhance mechanical properties by controlling in-situ nano precipitates. High-temperature oxidation tests were conducted at 900, 1000, and 1100 °C for 24 h in an air-like atmosphere. The 0.25C MEA exhibited weight changes of 0.052–0.852 mg/cm2, while the 0.75C MEA showed higher changes of 0.256–1.148 mg/cm2, highlighting the significant impact of carbon on oxidation resistance. Carbide formation was suggested to play an important role in determining internal oxidation behaviour.http://www.sciencedirect.com/science/article/pii/S2238785424030035Medium entropy alloyCoCrNiCarbon additionHigh-temperature oxidationOxidation mechanism |
| spellingShingle | Soobin Kim So-Yeon Park Kee-Ahn Lee High-temperature oxidation behavior of carbon doped CoCrNi medium entropy alloy fabricated by laser powder bed fusion Journal of Materials Research and Technology Medium entropy alloy CoCrNi Carbon addition High-temperature oxidation Oxidation mechanism |
| title | High-temperature oxidation behavior of carbon doped CoCrNi medium entropy alloy fabricated by laser powder bed fusion |
| title_full | High-temperature oxidation behavior of carbon doped CoCrNi medium entropy alloy fabricated by laser powder bed fusion |
| title_fullStr | High-temperature oxidation behavior of carbon doped CoCrNi medium entropy alloy fabricated by laser powder bed fusion |
| title_full_unstemmed | High-temperature oxidation behavior of carbon doped CoCrNi medium entropy alloy fabricated by laser powder bed fusion |
| title_short | High-temperature oxidation behavior of carbon doped CoCrNi medium entropy alloy fabricated by laser powder bed fusion |
| title_sort | high temperature oxidation behavior of carbon doped cocrni medium entropy alloy fabricated by laser powder bed fusion |
| topic | Medium entropy alloy CoCrNi Carbon addition High-temperature oxidation Oxidation mechanism |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424030035 |
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