碳纳米管增强铝基复合材料薄壁椭球件旋压成形实验  

Spinning test for thin-walled hemispherical shell part of CNTs/Al composites

作　　者：冯苏乐[1] 余小鹏 李志强 宋若存 杨学勤[1] 于忠奇[2] Feng Sule;Yu Xiaopeng;Li Zhiqiang;Song Ruocun;Yang Xueqin;Yu Zhongqi(Shanghai Aerospace Research Institute of Precision Machinery,Shanghai 201600,China;Shanghai Key Laboratory of Digital Manufacture for Thin-walled Structures,Shanghai Jiao Tong University,Shanghai 200240,China;School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海航天精密机械研究所,上海201600 [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,上海200240 [3]上海交通大学材料科学与工程学院,上海200240

出　　处：《锻压技术》2023年第5期183-187,共5页Forging & Stamping Technology

基　　金：国家自然科学基金资助项目(52175346)。

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.

关 键 词：铝基复合材料 薄壁构件 旋压成形 人工时效 碳纳米管 

分 类 号：TG306[金属学及工艺—金属压力加工]