Ultrasonic characterization of recrystallized microstructure evolution for Al<sub>0.26</sub>CoCrFeNiMn high-entropy alloys
Al<sub>0.26</sub>CoCrFeNiMn high-entropy alloys were prepared by vacuum induction melting and casting method, and processed by homogenized annealing, rolling and recrystallized annealing. The microstructure evolution of the alloys during thermomechanical treatment was investigated based...
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2019-12-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/Y2019/V47/I12/71 |
| _version_ | 1828078123960238080 |
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| author | DING Ning JIN Shi-jie PENG Liang-ming LEI Ming-kai LIN Li |
| author_facet | DING Ning JIN Shi-jie PENG Liang-ming LEI Ming-kai LIN Li |
| author_sort | DING Ning |
| collection | DOAJ |
| description | Al<sub>0.26</sub>CoCrFeNiMn high-entropy alloys were prepared by vacuum induction melting and casting method, and processed by homogenized annealing, rolling and recrystallized annealing. The microstructure evolution of the alloys during thermomechanical treatment was investigated based on ultrasonic method. The results show that the microstructure is coarse equiaxed grain after homogenized annealing, retaining deformed grain when recrystallized annealing temperature is 800℃, forming fine equiaxed grain when recrystallization is completed at 900℃, and then the grain grows at 1000℃.Besides, the grain size decreases with the increase of rolling ratio at the same recrystallized annealing temperature. At the aspect of ultrasonic characterization, the attenuation coefficient for probe testing with nominal frequency of 5MHz increases with the increase of grain size, and the attenuation coefficient with average grain size is corresponded in a cubic relationship, having a strong correlation. In order to further verify the feasibility of the method, the probe with nominal frequency of 7.5MHz was used to test, and the similar correlation was acquired. The attenuation coefficient can reveal the microstructure evolution of high-entropy alloys during thermomechanical treatment, especially for the relationship between grain size and thermomechanical treatment process. |
| first_indexed | 2024-04-11T02:41:31Z |
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| id | doaj.art-d05bb5a9b45245cd90783df88eee1768 |
| institution | Directory Open Access Journal |
| issn | 1001-4381 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T02:41:31Z |
| publishDate | 2019-12-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-d05bb5a9b45245cd90783df88eee17682023-01-02T18:56:03ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43811001-43812019-12-014712717710.11868/j.issn.1001-4381.2018.000557201912000557Ultrasonic characterization of recrystallized microstructure evolution for Al<sub>0.26</sub>CoCrFeNiMn high-entropy alloysDING Ning0JIN Shi-jie1PENG Liang-ming2LEI Ming-kai3LIN Li4School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, Liaoning, ChinaSchool of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, Liaoning, ChinaSchool of Engineering Science, University of Science and Technology of China, Hefei 230027, ChinaSchool of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, Liaoning, ChinaSchool of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, Liaoning, ChinaAl<sub>0.26</sub>CoCrFeNiMn high-entropy alloys were prepared by vacuum induction melting and casting method, and processed by homogenized annealing, rolling and recrystallized annealing. The microstructure evolution of the alloys during thermomechanical treatment was investigated based on ultrasonic method. The results show that the microstructure is coarse equiaxed grain after homogenized annealing, retaining deformed grain when recrystallized annealing temperature is 800℃, forming fine equiaxed grain when recrystallization is completed at 900℃, and then the grain grows at 1000℃.Besides, the grain size decreases with the increase of rolling ratio at the same recrystallized annealing temperature. At the aspect of ultrasonic characterization, the attenuation coefficient for probe testing with nominal frequency of 5MHz increases with the increase of grain size, and the attenuation coefficient with average grain size is corresponded in a cubic relationship, having a strong correlation. In order to further verify the feasibility of the method, the probe with nominal frequency of 7.5MHz was used to test, and the similar correlation was acquired. The attenuation coefficient can reveal the microstructure evolution of high-entropy alloys during thermomechanical treatment, especially for the relationship between grain size and thermomechanical treatment process.http://jme.biam.ac.cn/CN/Y2019/V47/I12/71high-entropy alloyrollingrecrystallizationgrainultrasonic attenuation coefficient |
| spellingShingle | DING Ning JIN Shi-jie PENG Liang-ming LEI Ming-kai LIN Li Ultrasonic characterization of recrystallized microstructure evolution for Al<sub>0.26</sub>CoCrFeNiMn high-entropy alloys Cailiao gongcheng high-entropy alloy rolling recrystallization grain ultrasonic attenuation coefficient |
| title | Ultrasonic characterization of recrystallized microstructure evolution for Al<sub>0.26</sub>CoCrFeNiMn high-entropy alloys |
| title_full | Ultrasonic characterization of recrystallized microstructure evolution for Al<sub>0.26</sub>CoCrFeNiMn high-entropy alloys |
| title_fullStr | Ultrasonic characterization of recrystallized microstructure evolution for Al<sub>0.26</sub>CoCrFeNiMn high-entropy alloys |
| title_full_unstemmed | Ultrasonic characterization of recrystallized microstructure evolution for Al<sub>0.26</sub>CoCrFeNiMn high-entropy alloys |
| title_short | Ultrasonic characterization of recrystallized microstructure evolution for Al<sub>0.26</sub>CoCrFeNiMn high-entropy alloys |
| title_sort | ultrasonic characterization of recrystallized microstructure evolution for al sub 0 26 sub cocrfenimn high entropy alloys |
| topic | high-entropy alloy rolling recrystallization grain ultrasonic attenuation coefficient |
| url | http://jme.biam.ac.cn/CN/Y2019/V47/I12/71 |
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