锻压技术

碳纳米管增强铝基复合材料薄壁椭球件旋压成形实验

英文标题：Spinning test for thin-walled hemispherical shell part of CNTs/Al composites

单位：1.上海航天精密机械研究所 2.上海交通大学上海市复杂薄壁结构数字化制造重点实验室 3.上海交通大学材料科学与工程学院

分类号：TG306

出版年,卷(期):页码：2023,48(5):183-187

摘要：

铝基复合材料作为一种新型轻质高强材料，在航天型号产品上具有重要的应用前景。以碳纳米管增强铝基复合材料为对象，开展薄壁曲母线构件旋压成形和热处理工艺研究，评估碳纳米管增强铝基复合材料薄壁件工程应用的可行性。旋压实验表明：通过与现有航天用铝合金材料对比，获得了碳纳米管增强铝基复合材料“固溶500 ℃×2 h+时效150 ℃×4 h”的最佳参数组合，并采用多道次旋压工艺，得到的薄壁椭球件具有良好的几何精度；同时，经过人工时效后旋压件的拉伸强度可达580 MPa，相较于现有铝合金材料提高了35%。本研究成果为碳纳米管增强铝基复合材料在大型航天薄壁件上的工程应用提供了技术支持。

As a new type of lightweight and high-strength material, aluminum matrix composites have important application prospects in aerospace products. Therefore, for carbon nanotube reinforced aluminum matrix composites (CNTs/Al composites), the spinning and heat treatment process of thin-walled curved busbar components were studied to evaluate the feasibility in engineering application of CNTs/Al composites thin-walled part. The spinning tests show that compared with the existing aluminum alloy materials for aerospace, the optimal parameter combination of “solid solution 500 ℃×2 h+ aging 150 ℃×4 h” of CNTs/Al composites is obtained, and the thin-walled hemispherical shell parts with good geometric accuracy are formed by multi-pass spinning process. At the same time, the tensile strength of spun part can reach 580 MPa after artificial aging, which is 35% higher than that of the existing aluminum alloy material. Thus, the research results provide technical support for the engineering application of CNTs/Al composites in large aerospace thin-walled parts.

基金项目：

国家自然科学基金资助项目（52175346）

作者简介：冯苏乐（1987-），男，硕士，高级工程师,E-mail：fengsuleshikeke@126.com

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