Aluminizing as a method of improvement of Mar-M247 alloy lifetime
Environmentally friendly high temperature high-activity (HTHA) and high temperature low- activity (HTLA) CVD aluminizing processes were realized on the Mar-M247 heat resistant superalloy substrate that is widely used in the hot section of aircraft engines. Additionally, commercial aluminide coatings...
Saved in:
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
University of Belgrade, Technical Faculty, Bor
2024-01-01
|
| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
| Subjects: | |
| Online Access: | https://doiserbia.nb.rs/img/doi/1450-5339/2024/1450-53392400014Z.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832572804028956672 |
|---|---|
| author | Zagula-Yavorska M. |
| author_facet | Zagula-Yavorska M. |
| author_sort | Zagula-Yavorska M. |
| collection | DOAJ |
| description | Environmentally friendly high temperature high-activity (HTHA) and high temperature low- activity (HTLA) CVD aluminizing processes were realized on the Mar-M247 heat resistant superalloy substrate that is widely used in the hot section of aircraft engines. Additionally, commercial aluminide coatings deposited in the above-the-pack aluminiznig process were analyzed. The aluminizing of the Mar-M247 superalloy by the HTHA, HTLA and above-the-pack processes led to formation of two layers of the coatings. The outer layer of the coatings formed by the above-the-pack process consisted of the β-NiAl phase with precipitates, while the outer layer of coatings formed by the HTHA and HTLA processes consisted of the pure β-NiAl phase. Aluminizing successfully improved the lifetime of Mar-M247 superalloy. Despite the fact that the coatings formed by the above-the-pack process are thicker and have a higher aluminium concentration than the coatings formed by the HTLA aluminizing and process, the lifetime of the coated superalloy was lower. Moreover the oxidation resistance of the coated superalloy in the HTLA aluminizing process was better than that of the coating in the HTHA aluminizing process. The removal of impurities in the HTLA aluminizing process ensured a “pure” outer layer of the coatings. Clean aluminide coatings may create a purer alumina oxide and may prolong its lifetime. |
| format | Article |
| id | doaj-art-4fc3642389a446e69c6ab8a183f080e7 |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-4fc3642389a446e69c6ab8a183f080e72025-02-02T07:38:22ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752024-01-0160116517510.2298/JMMB240422014Z1450-53392400014ZAluminizing as a method of improvement of Mar-M247 alloy lifetimeZagula-Yavorska M.0Rzeszów University of Technology, Department of Materials Science, Faculty of Mechanical Engineering and Aeronautics, Rzeszów, PolandEnvironmentally friendly high temperature high-activity (HTHA) and high temperature low- activity (HTLA) CVD aluminizing processes were realized on the Mar-M247 heat resistant superalloy substrate that is widely used in the hot section of aircraft engines. Additionally, commercial aluminide coatings deposited in the above-the-pack aluminiznig process were analyzed. The aluminizing of the Mar-M247 superalloy by the HTHA, HTLA and above-the-pack processes led to formation of two layers of the coatings. The outer layer of the coatings formed by the above-the-pack process consisted of the β-NiAl phase with precipitates, while the outer layer of coatings formed by the HTHA and HTLA processes consisted of the pure β-NiAl phase. Aluminizing successfully improved the lifetime of Mar-M247 superalloy. Despite the fact that the coatings formed by the above-the-pack process are thicker and have a higher aluminium concentration than the coatings formed by the HTLA aluminizing and process, the lifetime of the coated superalloy was lower. Moreover the oxidation resistance of the coated superalloy in the HTLA aluminizing process was better than that of the coating in the HTHA aluminizing process. The removal of impurities in the HTLA aluminizing process ensured a “pure” outer layer of the coatings. Clean aluminide coatings may create a purer alumina oxide and may prolong its lifetime.https://doiserbia.nb.rs/img/doi/1450-5339/2024/1450-53392400014Z.pdfhtla processhtha processabove-the-pack processlifetime |
| spellingShingle | Zagula-Yavorska M. Aluminizing as a method of improvement of Mar-M247 alloy lifetime Journal of Mining and Metallurgy. Section B: Metallurgy htla process htha process above-the-pack process lifetime |
| title | Aluminizing as a method of improvement of Mar-M247 alloy lifetime |
| title_full | Aluminizing as a method of improvement of Mar-M247 alloy lifetime |
| title_fullStr | Aluminizing as a method of improvement of Mar-M247 alloy lifetime |
| title_full_unstemmed | Aluminizing as a method of improvement of Mar-M247 alloy lifetime |
| title_short | Aluminizing as a method of improvement of Mar-M247 alloy lifetime |
| title_sort | aluminizing as a method of improvement of mar m247 alloy lifetime |
| topic | htla process htha process above-the-pack process lifetime |
| url | https://doiserbia.nb.rs/img/doi/1450-5339/2024/1450-53392400014Z.pdf |
| work_keys_str_mv | AT zagulayavorskam aluminizingasamethodofimprovementofmarm247alloylifetime |