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| Al-5Ti-0.25C合金制备工艺及其细化效果研究 |
| Preparation Process and Refining Performance of Al-5Ti-0.25C Alloy |
| Received:March 11, 2021 |
| DOI：10.3969/j.issn.1674-6457.2021.03.019 |
| 中文关键词: Al-5Ti-0.25C 制备工艺 细化效果 Al屑 Ti屑 |
| 英文关键词: Al-5Ti-0.25C preparation process refining performance Al Chips Ti chips |
| 基金项目:2020年大学生创新创业项目(202010214146);国家重点研发计划(2019YFB2006500) |
| Author Name | Affiliation | | YANG He | School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150080, China | | HU Mao-liang | School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150080, China | | LIU Tong | School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150080, China | | ZHOU Yu-qing | School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150080, China | | LU Kai | School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150080, China | | YANG Xing-fei | School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150080, China | | JI Ze-sheng | School of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150080, China |
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| 中文摘要: |
| 目的 对机械加工过程中的Al屑和Ti屑进行回收再利用。方法 以Al屑和Ti屑为制备Al-5Ti-0.25C合金的原材料，分析Al屑和Ti屑的加料温度、反应温度和反应时间对Al-5Ti-0.25C微观组织的影响，确定最佳制备工艺。在此基础上研究Al-5Ti-0.25C的添加量、细化温度、细化时间和搅拌处理对纯铝的细化效果，确定最佳细化工艺，并与商用杆状Al-5Ti-1B合金对比细化效果。结果 最佳制备工艺:加料温度为860 ℃、反应温度为950 ℃和反应时间为60 min。最佳细化工艺:Al-5Ti-0.25C合金的质量分数为0.2%、细化温度为730 ℃和细化时间为2 min，搅拌处理。添加0.2%Al-5Ti-0.25C合金(质量分数)后，纯铝平均晶粒尺寸细化到大约200.2 μm。细化时间低于60 min时，Al-5Ti-0.25C合金无明显衰退现象。结论 以机械加工产生的Al屑和Ti屑为原材料制备Al-5Ti-0.25C合金，可以有效解决Al屑和Ti屑的回收难题，而且Al-5Ti-0.25C合金的细化效果优于商用杆状Al-5Ti-1B合金。 |
| 英文摘要: |
| In this paper, Al and Ti chips produced by machining were used as raw materials to prepare the raw material of Al-5Ti-0.25C alloy. The effects of the addition temperature, reaction temperature and reaction time of Al and Ti chips on the microstructure of Al-5Ti-0.25C were analyzed to determine the best preparation process. On this basis, the refinement effects of Al-5Ti-0.25C addition, refinement temperature, refinement time and stirring treatment on pure aluminum were studied to determine the best refinement process and compare the refinement effects with commercial rod Al-5Ti-1B alloy. The results show that the optimal preparation process is that the feed temperature is 860 ℃, reaction temperature is 950 ℃ and reaction time is 60 min. The optimal refining process is that the addition amount of Al-5Ti-0.25C alloy is 0.2%, refining temperature is 730 ℃ and refining time is 2 min, with stirring treatment. After adding 0.2% Al-5Ti-0.25C alloy, the average grain size of pure aluminum is refined to about 200.2 μm. When the refining time is less than 60 min, the fading phenomenon in Al-5Ti-0.25C alloy is no obvious. The preparation of Al-5Ti-0.25C alloy with Al chips and Ti chips produced by machining can effectively solve the problem of recovery of Al chips and Ti chips. And the refining performance of Al-5Ti-0.25C alloy is better than that of commercial rod-like Al-5Ti-1B alloy. |
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