Oxidation behaviors of the rotary friction welded joints of HT700 superalloy in saturated water steam at 700 ℃
The oxidation behavior of welded joints with or without heat-treatment of HT700 alloy was studied in 700 ℃ saturated water vapor with regards to oxidation kinetics, oxide film composition, and microstructure. The results show that the oxide film compositions of the as-welded joints and heat-treated...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-06-01
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| Series: | Corrosion Communications |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667266922000251 |
| _version_ | 1811297462834429952 |
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| author | Chunlin Huang Jintao Lu Ming Zhu Yaxin Xu Boshuai Li Yongli Zhou Jinyang Huang |
| author_facet | Chunlin Huang Jintao Lu Ming Zhu Yaxin Xu Boshuai Li Yongli Zhou Jinyang Huang |
| author_sort | Chunlin Huang |
| collection | DOAJ |
| description | The oxidation behavior of welded joints with or without heat-treatment of HT700 alloy was studied in 700 ℃ saturated water vapor with regards to oxidation kinetics, oxide film composition, and microstructure. The results show that the oxide film compositions of the as-welded joints and heat-treated welded joints were basically the same. The oxide film is composed of a small amount of iron oxide, NiCr2O4, and a large amount of Cr2O3 from the outer layer to the inner layer, with a small amount of internal oxidation products Al2O3. At the beginning of the oxidation process, the double layer oxide film grew at the same time, so that the as-welded joint had better performance in the later stage of oxidation. The formation of a continuous internal oxidation layer was later in heat-treated welded joints as compared to the as-welded joint, resulting in a larger thickness of the oxide film. The oxidation behavior of the welded seams in different regions of as-welded state and heat treatment state after welding displayed the following characteristics: small grain size, thin oxide film, and the weld fusion line with thin oxide film. |
| first_indexed | 2024-04-13T06:04:41Z |
| format | Article |
| id | doaj.art-e3067bb5560d4cef9bcee5605c472f80 |
| institution | Directory Open Access Journal |
| issn | 2667-2669 |
| language | English |
| last_indexed | 2024-04-13T06:04:41Z |
| publishDate | 2022-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Corrosion Communications |
| spelling | doaj.art-e3067bb5560d4cef9bcee5605c472f802022-12-22T02:59:19ZengElsevierCorrosion Communications2667-26692022-06-0164047Oxidation behaviors of the rotary friction welded joints of HT700 superalloy in saturated water steam at 700 ℃Chunlin Huang0Jintao Lu1Ming Zhu2Yaxin Xu3Boshuai Li4Yongli Zhou5Jinyang Huang6National Engineering Research Center of Clean Coal Combustion for Utility Boilers, Xi'an Thermal Power Research Institute Co, Ltd., Xi'an 710032, China; Xi'an University of Science and Technology, College of Material Science and Engineering, Xi'an 710054, ChinaNational Engineering Research Center of Clean Coal Combustion for Utility Boilers, Xi'an Thermal Power Research Institute Co, Ltd., Xi'an 710032, China; Corresponding authors.Xi'an University of Science and Technology, College of Material Science and Engineering, Xi'an 710054, China; Corresponding authors.State Key Laboratory of Solidification Processing, Shaanxi Key Laboratory of Friction Welding Technologies, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, ChinaNational Engineering Research Center of Clean Coal Combustion for Utility Boilers, Xi'an Thermal Power Research Institute Co, Ltd., Xi'an 710032, China; Xi'an University of Science and Technology, College of Material Science and Engineering, Xi'an 710054, ChinaNational Engineering Research Center of Clean Coal Combustion for Utility Boilers, Xi'an Thermal Power Research Institute Co, Ltd., Xi'an 710032, ChinaNational Engineering Research Center of Clean Coal Combustion for Utility Boilers, Xi'an Thermal Power Research Institute Co, Ltd., Xi'an 710032, ChinaThe oxidation behavior of welded joints with or without heat-treatment of HT700 alloy was studied in 700 ℃ saturated water vapor with regards to oxidation kinetics, oxide film composition, and microstructure. The results show that the oxide film compositions of the as-welded joints and heat-treated welded joints were basically the same. The oxide film is composed of a small amount of iron oxide, NiCr2O4, and a large amount of Cr2O3 from the outer layer to the inner layer, with a small amount of internal oxidation products Al2O3. At the beginning of the oxidation process, the double layer oxide film grew at the same time, so that the as-welded joint had better performance in the later stage of oxidation. The formation of a continuous internal oxidation layer was later in heat-treated welded joints as compared to the as-welded joint, resulting in a larger thickness of the oxide film. The oxidation behavior of the welded seams in different regions of as-welded state and heat treatment state after welding displayed the following characteristics: small grain size, thin oxide film, and the weld fusion line with thin oxide film.http://www.sciencedirect.com/science/article/pii/S2667266922000251Ni-Fe based superalloyFriction weldingSteam oxidationHeat treatment post weldingMicrostructure of welding joints |
| spellingShingle | Chunlin Huang Jintao Lu Ming Zhu Yaxin Xu Boshuai Li Yongli Zhou Jinyang Huang Oxidation behaviors of the rotary friction welded joints of HT700 superalloy in saturated water steam at 700 ℃ Corrosion Communications Ni-Fe based superalloy Friction welding Steam oxidation Heat treatment post welding Microstructure of welding joints |
| title | Oxidation behaviors of the rotary friction welded joints of HT700 superalloy in saturated water steam at 700 ℃ |
| title_full | Oxidation behaviors of the rotary friction welded joints of HT700 superalloy in saturated water steam at 700 ℃ |
| title_fullStr | Oxidation behaviors of the rotary friction welded joints of HT700 superalloy in saturated water steam at 700 ℃ |
| title_full_unstemmed | Oxidation behaviors of the rotary friction welded joints of HT700 superalloy in saturated water steam at 700 ℃ |
| title_short | Oxidation behaviors of the rotary friction welded joints of HT700 superalloy in saturated water steam at 700 ℃ |
| title_sort | oxidation behaviors of the rotary friction welded joints of ht700 superalloy in saturated water steam at 700 ℃ |
| topic | Ni-Fe based superalloy Friction welding Steam oxidation Heat treatment post welding Microstructure of welding joints |
| url | http://www.sciencedirect.com/science/article/pii/S2667266922000251 |
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