Effect of Heat Temperature on Microstructure and Wear Mechanism of Laser Additive Manufactured Hastelloy C22
| العنوان: | Effect of Heat Temperature on Microstructure and Wear Mechanism of Laser Additive Manufactured Hastelloy C22 |
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| المؤلفون: | Qin-Ying Wang, Xing-Shou Zhang, Li-Jin Dong, Huai-Bei Zheng, Ting-Yao Liu, Yu-Chen Xi, Jin Zhang, De-Zhi Zeng, Yuan-Hua Lin |
| المصدر: | Journal of Tribology. 145 |
| بيانات النشر: | ASME International, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Mechanics of Materials, Mechanical Engineering, Surfaces and Interfaces, Surfaces, Coatings and Films |
| الوصف: | Residual stress is easily generated in laser additive manufacturing (LAM) alloys due to high-temperature gradient during preparing, which increases the failure risk of materials. A LAM Hastelloy C22 was prepared by rotating strategy in this study, and the wear mechanism induced by heat treatment was investigated. The microstructural results showed that the columnar structure with the size of 1 ∼ 4 μm and the cellular structures with the size of 0.3 ∼ 1 μm were observed in LAM Hastelloy C22. The samples consist of γ-Ni solid solution. Cr23C6 and the increase of MoSi2 content were found as the heating temperature increased. The mechanical results presented that compared with the as-received LAM Hastelloy C22, the residual stress and wear-rate of the samples heat treated at 600 °C, 750 °C, and 900 °C were reduced by 14%, 49%, 63% and 39.9%, 68.9%, 92.3%, respectively. The wear mechanism showed that heat treatment enhanced the wear resistance of LAM Hastelloy C22 by the integrated oxide layer and supporting effect of MoSi2 and Cr23C6. This research indicated that the microstructural evolution that enhanced the wear resistance of LAM Hastelloy C22 was predominant rather than the reduced effect from relieving residual stress after heat treatment. |
| تدمد: | 1528-8897 0742-4787 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::69eba89a2b0c47fd2e3587e57e50656f https://doi.org/10.1115/1.4055717 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........69eba89a2b0c47fd2e3587e57e50656f |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15288897 07424787 |
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