| 轻质高性能镁合金开发及其在航天航空领域的应用 |
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| 引用本文： | 丁文江,吴国华,李中权,肖旅,陈玉狮. 轻质高性能镁合金开发及其在航天航空领域的应用[J]. 上海航天, 2019, 36(2): 1-8 |
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| 作者姓名： | 丁文江 吴国华 李中权 肖旅 陈玉狮 |
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| 作者单位： | 上海交通大学 轻合金精密成型国家工程研究中心,上海 200240,上海交通大学 轻合金精密成型国家工程研究中心,上海 200240,上海航天精密机械研究所,上海 201600,上海航天精密机械研究所,上海 201600,上海交通大学 轻合金精密成型国家工程研究中心,上海 200240 |
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| 基金项目： | 国家自然科学基金(51775334)；国防科技创新特区项目(002-002-01) |
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| 摘 要： | 镁合金是实际应用中最轻的金属结构材料,在航天航空、轨道交通、汽车、3C(computer,communication,consumer electronics)产品等领域具有广阔的应用前景。但镁合金材料强度偏低,尤其是高温强度,其抗蠕变性较差；镁合金铸件容易形成缩松和热裂纹,成品率低,镁合金变形件塑性加工条件控制困难,导致组织与力学性能不稳定。介绍了高性能镁合金材料(非稀土镁合金、含稀土镁合金、镁锂合金)及其成形技术(重力铸造、低压铸造、压铸、挤压铸造、半固态成形、塑性成形)的开发现状,综述了其在航天航空领域的应用状况,并展望了今后的发展趋势。
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| 关 键 词： | 镁合金 航天航空 成形技术 轻量化 |
| 收稿时间： | 2018-11-13 |
| 修稿时间： | 2019-02-06 |
Development of High-Performance Light-Mass Magnesium Alloys andApplications in Aerospace and Aviation Fields |
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| Affiliation: | National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University, Shanghai 200240, China,National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University, Shanghai 200240, China,Shanghai Spaceflight Precision Machinery Institute, Shanghai 201600, China,Shanghai Spaceflight Precision Machinery Institute, Shanghai 201600, China and National Engineering Research Center of Light Alloy Net Forming, Shanghai Jiao Tong University, Shanghai 200240, China |
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| Abstract: | The magnesium alloy is the lightest metal structural material in practical application, and has broad application prospects in aerospace, rail transit, automobiles, 3C (computer, communication, consumer electronics) products and other fields. However, the strength of the magnesium alloy is relatively low, especially the high temperature strength, and its creep resistance is relatively poor. Magnesium alloy castings are prone to shrinkage and hot cracks, and the yield is low. It is difficult to control the plastic processing conditions of magnesium alloy deformed parts, resulting in unstable structural and mechanical properties. In this paper, research and development status of high performance magnesium alloys(magnesium alloy without rare earth, magnesium alloy containing rare earth and magnesium lithium alloy)and their forming technologies (gravity casting, low pressure casting, die casting, squeeze casting, semi-solid forming and plastic forming) are introduced, their applications in aerospace and aviation fields are summarized, and the development trends in the future are prospected. |
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| Keywords: | magnesium alloy aerospace and aviation forming technology light-mass design |
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