上海航天（中英文）2024，Vol.41Issue(3)：103-109,7.DOI:10.19328/j.cnki.2096-8655.2024.03.011
航天用碳纳米管增强铝合金复合材料的力学与阻尼性能
Mechanical Properties and Damping Capacity of CNT Reinforced Aluminum Maxtrix Composites
摘要
Abstract
Carbon nanotube(CNT)reinforced aluminum matrix(CNT/Al)composites have the advantages of light weight,high strength,high modulus,and easy processing,and have a great application prospect in the aerospace field as lightweight materials.In order to obtain a lightweight structural material with both good mechanical properties and perfect damping capacity,the 1.5%(mass fraction)CNT/2A12 composite is prepared by flake powder metallurgy and elemental alloying.When the composite is aged at 130℃for 6～14 h,it exhibits high tensile strength and good ductility.The tensile strength is up to 595 MPa at 12 h of aging,and the elongation is up to 14.0%at 8 h of aging.The damping capacity of the composite is about 0.005 at 0～180℃,but significantly increases at 180～300℃,reaching 0.05 at 300℃.The damping capacity is hardly affected by the aging time.The storage modulus of the composite decreases when the test temperature increases,and increases at 180～300℃when the vibration frequency increases.Taking the overall properties into consideration,at 130℃and 8 h,the 1.5%(mass fraction)CNT/2A12 composite has the optimal mechanical properties and damping capacity.关键词
CNT/2A12复合材料/热处理/力学性能/阻尼性能/储存模量Key words
CNT/Al composite/heat treatment/mechanical property/damping capacity/storage modulus分类
矿业与冶金引用本文复制引用
黄静宏,邹仁珍,陈航,朱帅,江燕,范根莲,谭占秋,李志强,张荻..航天用碳纳米管增强铝合金复合材料的力学与阻尼性能[J].上海航天（中英文）,2024,41(3):103-109,7.基金项目
国家自然科学基金(52171143、52192592、52192595) （52171143、52192592、52192595）
中国航天科技集团公司第八研究院产学研合作基金(USCAST2022-01) （USCAST2022-01）
