超轻镁锂合金熔炼工艺研究

材料导报

2020, Vol. 34

Issue (Z1): 316-321

金属与金属基复合材料

超轻镁锂合金熔炼工艺研究

宋文杰¹, 刘洁¹, 董会萍¹, 张光², 王彤³

1 陕西科技大学机电工程学院,西安 710021;
2 西北工业大学航空学院,西安 710072;
3 山西八达镁业有限公司,运城 043800

Research on Melting Process of Ultralight Magnesium-Lithium Alloys

SONG Wenjie¹, LIU Jie¹, DONG Huiping¹, ZHANG Guang², WANG Tong³

1 College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China;
2 School of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China3 Shanxi Bada Magnesium Co.,Ltd., Yuncheng 043800, China

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摘要镁锂合金是目前最轻的金属结构材料,因其低密度、高比强度和高比刚度等突出优点,在航空航天、武器装备、汽车等领域具有广阔的应用前景。但是要实现超轻镁锂合金的大规模应用,必须解决其熔炼困难的问题。本工作对目前的铸造镁锂合金熔炼工艺进行研究,以Mg-8Li-3Al-3Zn-1Y为研究对象,采用SF₆气体保护浇铸空冷、覆盖剂表面保护炉冷、覆盖剂全面保护炉冷、覆盖剂+Ar气保护浇铸空冷和真空感应熔炼+Ar气保护浇铸炉冷五种熔炼工艺来制备镁锂合金,对比研究五种熔炼工艺制备镁锂合金的效果及力学性能分析,总结各种熔炼工艺的优缺点。本研究对获得完整、无缺陷、组织优化和高性能的铸造镁锂合金,以及优化镁锂合金的规模化生产和制备工艺,具有重要的指导和借鉴意义。

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	宋文杰
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关键词: 镁锂合金熔炼工艺力学性能减重材料生产成本

Abstract: Magnesium-lithium alloy as the lightest metal structural material at present, it has broad application prospects in aerospace, weapons and equipment, automotive and other fields due to its outstanding advantages such as low density, high specific strength, and high specific stiffness.However, in order to realize the large-scale application of ultralight magnesium-lithium alloys, it is necessary to solve the problem of difficult melting. This article reviews the current melting process of magnesium-lithium alloys, and takes Mg-8Li-3Al-3Zn-1Y as the research object, adopts SF₆ gas protection casting air cooling, covering agent surface protection furnace cooling, covering agent comprehensive protection furnace coo-ling, covering agent and Ar gas protection casting air cooling and vacuum induction melting and Ar gas protection casting furnace cooling five melting processes to prepare magnesium-lithium alloys. The effects and mechanical properties of magnesium-lithium alloys prepared by five melting processes were compared and analyzed. Summarize the advantages and disadvantages of each melting process. The research in this paper has important guidance and reference significance for obtaining complete, defect-free, structure-optimized and high-performance cast magnesium-lithium alloys, as well as optimizing the large-scale production and preparation of magnesium-lithium alloys.

Key words: magnesium-lithium alloy melting process mechanical properties weight-reducing material production cost

发布日期: 2020-07-01

ZTFLH:

TG292

基金资助: 国家装备预研领域基金(61409220408);国家留学基金(201808615136);陕西省重点研发计划(2019KW-023);陕西科技大学引进博士科研启动基金(2016GBJ-02)

作者简介: 宋文杰,陕西科技大学机电工程学院副教授、硕士研究生导师。2016年毕业于西北工业大学材料加工工程专业(硕博连读),西北工业大学优秀博士学位论文获得者,工学博士。同年加入陕西科技大学机电工程学院工作至今,主要从事镁锂合金熔炼工艺、微观结构及力学性能的研究。主持国防装备预研领域基金、国家留学基金、陕西省重点研发计划、西北工业大学博士论文创新基金、陕西科技大学“引进博士科研启动基金”等5项,参与国防基础科研项目、国家重大专项、凝固技术国家重点实验室基金、先进镁基材料山西省重点实验室开放课题等5项。在Journal of Power Sources、Applied Surface Science、Journal of Alloys and Compounds等国内外重要期刊发表高水平SCI论文十余篇,申请国家发明专利4件,参加国际和国内学术会议报告6次,其中邀请报告2次。

引用本文:

宋文杰, 刘洁, 董会萍, 张光, 王彤. 超轻镁锂合金熔炼工艺研究[J]. 材料导报, 2020, 34(Z1): 316-321.
SONG Wenjie, LIU Jie, DONG Huiping, ZHANG Guang, WANG Tong. Research on Melting Process of Ultralight Magnesium-Lithium Alloys. Materials Reports, 2020, 34(Z1): 316-321.

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http://www.mater-rep.com/CN/ 或 http://www.mater-rep.com/CN/Y2020/V34/IZ1/316

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