Microstructure and refinement mechanism of Al–5Ti–1B alloys
Two kinds of Al–5Ti–1B alloys were prepared by powder mixing + hot extrusion and powder mixing + gas atomization + hot extrusion, respectively. The microstructures of the Al–5Ti–1B alloys prepared by two kinds of processes were studied, and the grain refinement properties were assessed. The results...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Powder Metallurgy Technology
2022-06-01
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| Series: | Fenmo yejin jishu |
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| Online Access: | https://pmt.ustb.edu.cn/article/doi/10.19591/j.cnki.cn11-1974/tf.2021090002 |
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| author | LI Yang GUO Xu-qiang XU Lei LI Chang-yun LIU Xiao-fei |
| author_facet | LI Yang GUO Xu-qiang XU Lei LI Chang-yun LIU Xiao-fei |
| author_sort | LI Yang |
| collection | DOAJ |
| description | Two kinds of Al–5Ti–1B alloys were prepared by powder mixing + hot extrusion and powder mixing + gas atomization + hot extrusion, respectively. The microstructures of the Al–5Ti–1B alloys prepared by two kinds of processes were studied, and the grain refinement properties were assessed. The results show that, the TiB2 particles can be uniformly distributed and the growth of TiAl3 phase can be inhibited by these two kinds of processes. The Al–5Ti–1B alloys with the mass fraction of 0.2% are added to the melt of 7050 aluminum alloys. The grain refinement effect of the Al–5Ti–1B alloys prepared by powder mixing + hot extrusion is not obvious, and the grain size of 7050 aluminum alloys is still up to 1400 μm. The grain refinement effect of the Al–5Ti–1B alloys prepared by powder mixing+ gas atomization + hot extrusion is very good, the average grain size of 7050 aluminum alloys is only 176 μm. According to this experimental phenomenon, a new explanation for the grain refinement and double nucleation mechanism of the Al–Ti–B alloys is proposed. |
| format | Article |
| id | doaj-art-efcee50be1744fbf865dfc07d2109d19 |
| institution | DOAJ |
| issn | 1001-3784 |
| language | zho |
| publishDate | 2022-06-01 |
| publisher | Editorial Office of Powder Metallurgy Technology |
| record_format | Article |
| series | Fenmo yejin jishu |
| spelling | doaj-art-efcee50be1744fbf865dfc07d2109d192025-08-20T02:39:26ZzhoEditorial Office of Powder Metallurgy TechnologyFenmo yejin jishu1001-37842022-06-0140325125710.19591/j.cnki.cn11-1974/tf.2021090002Microstructure and refinement mechanism of Al–5Ti–1B alloysLI Yang0GUO Xu-qiang1XU Lei2LI Chang-yun3LIU Xiao-fei4School of Engineering, China University of Petroleum-Beijing at Karamay, Karamay 834000, ChinaSchool of Engineering, China University of Petroleum-Beijing at Karamay, Karamay 834000, ChinaSchool of Engineering, China University of Petroleum-Beijing at Karamay, Karamay 834000, ChinaSchool of Engineering, China University of Petroleum-Beijing at Karamay, Karamay 834000, ChinaXinjiang Joinworld Co., Ltd., Urumqi 830013, ChinaTwo kinds of Al–5Ti–1B alloys were prepared by powder mixing + hot extrusion and powder mixing + gas atomization + hot extrusion, respectively. The microstructures of the Al–5Ti–1B alloys prepared by two kinds of processes were studied, and the grain refinement properties were assessed. The results show that, the TiB2 particles can be uniformly distributed and the growth of TiAl3 phase can be inhibited by these two kinds of processes. The Al–5Ti–1B alloys with the mass fraction of 0.2% are added to the melt of 7050 aluminum alloys. The grain refinement effect of the Al–5Ti–1B alloys prepared by powder mixing + hot extrusion is not obvious, and the grain size of 7050 aluminum alloys is still up to 1400 μm. The grain refinement effect of the Al–5Ti–1B alloys prepared by powder mixing+ gas atomization + hot extrusion is very good, the average grain size of 7050 aluminum alloys is only 176 μm. According to this experimental phenomenon, a new explanation for the grain refinement and double nucleation mechanism of the Al–Ti–B alloys is proposed.https://pmt.ustb.edu.cn/article/doi/10.19591/j.cnki.cn11-1974/tf.2021090002hot extrusiongrain refineral–ti–b alloyspowder metallurgyrefinement mechanism |
| spellingShingle | LI Yang GUO Xu-qiang XU Lei LI Chang-yun LIU Xiao-fei Microstructure and refinement mechanism of Al–5Ti–1B alloys Fenmo yejin jishu hot extrusion grain refiner al–ti–b alloys powder metallurgy refinement mechanism |
| title | Microstructure and refinement mechanism of Al–5Ti–1B alloys |
| title_full | Microstructure and refinement mechanism of Al–5Ti–1B alloys |
| title_fullStr | Microstructure and refinement mechanism of Al–5Ti–1B alloys |
| title_full_unstemmed | Microstructure and refinement mechanism of Al–5Ti–1B alloys |
| title_short | Microstructure and refinement mechanism of Al–5Ti–1B alloys |
| title_sort | microstructure and refinement mechanism of al 5ti 1b alloys |
| topic | hot extrusion grain refiner al–ti–b alloys powder metallurgy refinement mechanism |
| url | https://pmt.ustb.edu.cn/article/doi/10.19591/j.cnki.cn11-1974/tf.2021090002 |
| work_keys_str_mv | AT liyang microstructureandrefinementmechanismofal5ti1balloys AT guoxuqiang microstructureandrefinementmechanismofal5ti1balloys AT xulei microstructureandrefinementmechanismofal5ti1balloys AT lichangyun microstructureandrefinementmechanismofal5ti1balloys AT liuxiaofei microstructureandrefinementmechanismofal5ti1balloys |