| Autor: |
Jiayi Chen, Xincheng Xie, Tao Zou, Yupeng Zhang, Haiyan Wang, Zhongwei Liang |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
|
| Zdroj: |
Journal of Materials Research and Technology, Vol 27, Iss , Pp 2052-2065 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2238-7854 |
| DOI: |
10.1016/j.jmrt.2023.10.068 |
| Popis: |
This paper used ultrasonic strengthening grinding (USGP) to process 254SMo welded joints. The mechanical properties of processed and unmachined samples of welded joints, including grain size, dislocation, microhardness, residual stress, and high-temperature oxidation resistance at 900 °C, were investigated. The results indicate that the grains of the processed samples exhibit significant refinement and a high dislocation density and that the maximum microhardness and residual compressive stress are 392.5 HV0.3 and −633.44 MPa, respectively. In addition, the processed sample exhibits excellent oxidation at high temperatures. At 900 °C, the mass gain of the USGP-processed sample is reduced by 47.5 % compared to its mass gain prior to processing. These results highlight the potential of this method in improving the high-temperature resistance of various mechanical components, particularly those made from special materials. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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