| 7050/Gr复合材料的制备及性能研究 |
| |
| 引用本文： | 柏振海,罗兵辉,周国燕,高健华.7050/Gr复合材料的制备及性能研究[J].兵器材料科学与工程,2009,32(3). |
| |
| 作者姓名： | 柏振海 罗兵辉 周国燕 高健华 |
| |
| 作者单位： | 中南大学,材料科学与工程学院,湖南,长沙,410083 |
| |
| 摘 要： | 采用热压和粉末包套挤压方法制备7050和7050/Gr材料,测试力学性能和内耗性能,利用金相显微镜和透射电镜观察材料组织。结果表明:通过热压制备的7050/Gr复合材料力学性能很低;粉末包套挤压制备的7050/Gr复合材料随Gr含量提高,7050/Gr的强度、弹性模量下降,伸长率也降低;热处理后复合材料的强度大幅度提高,T6态时强度最高,7050/4Gr、7050/5Gr的抗拉强度和伸长率分别为535 MPa、9.5%和526 MPa、3.5%;内耗测试结果表明,7050/5Gr复合材料的内耗比7050合金的内耗高,它们的内耗值均随测试频率降低和测试温度升高而增加,7050/5Gr复合材料的内耗属动滞后型的复相型阻尼合金的内耗机制。
|
| 关 键 词： | 7050/Gr复合材料 粉末挤压加工 力学性能 内耗 |
Preparation and properties of 7050/Gr composites |
| |
| BAI Zhenhai,LUO Binghui,ZHOU Guoyan,GAO Jianhua.Preparation and properties of 7050/Gr composites[J].Ordnance Material Science and Engineering,2009,32(3). |
| |
| Authors: | BAI Zhenhai LUO Binghui ZHOU Guoyan GAO Jianhua |
| |
| Affiliation: | School of Materials Science and Engineering;Central South University;Changsha 410083;China |
| |
| Abstract: | 7050 and 7050/Gr composites were prepared by hot-press and powder-extrusion,their mechanical properties and internal-friction properties were tested,the microstructures were observed by OM and TEM.The results show that the mechanical properties of 7050/Gr composite prepared by hot-press are much worse than that prepared by powder-extrusion.For 7050/Gr composite prepared by powder-extrusion,with volume of Gr increasing,the strength,the modulus,and the plasticity decrease.Heat treatment can greatly improve th... |
| |
| Keywords: | 7050/Gr composites powder extrusion mechanical properties internal-friction |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
