摘要
采用铸造方法制备具有不同SiC_(p)含量(0.5%~2.0%,质量分数,下同)的SiC_(p)/Mg_(94)Zn_(5)Y_(1)复合材料,并研究了复合材料的力学性能和阻尼性能。通过扫描电子显微镜和X射线衍射仪测试复合材料的微观组织结构和物相组成。在基体中加入SiC_(p)之后,SiC_(p)均匀分布在基体中,增强体细化了复合材料的微观组织结构。SiC_(p)/Mg_(94)Zn_(5)Y_(1)复合材料包括α-Mg、I相(准晶相)和SiC_(p)相。分别使用动态热机械分析仪和AG-X试验机测试了SiC_(p)/Mg_(94)Zn_(5)Y_(1)复合材料的阻尼性能和力学性能。复合材料的力学性能优于Mg_(94)Zn_(5)Y_(1)合金,1.0%SiC_(p)/Mg_(94)Zn_(5)Y_(1)复合材料的抗压缩强度高达350 MPa;所有复合材料的阻尼性能都远高于基体合金的阻尼性能,其中0.5%SiC_(p)/Mg_(94)Zn_(5)Y_(1)复合材料具有最佳的阻尼性能。此外,根据功效系数法,SiC_(p)含量为1.0%的SiC_(p)/Mg_(94)Zn_(5)Y_(1)复合材料具有良好的综合性能。
SiC_(p)/Mg_(94)Zn_(5)Y_(1)composites with 0.5wt%~2.0wt%SiC_(p)were prepared by the casting method.The mechanical properties and damping capacities of the composites were investigated.The microstructure and phase components of the composites were analyzed via the scanning electron microscopy and X-ray diffraction.Results show that after the addition of SiC_(p)into the matrix,the SiC_(p)is evenly distributed in the matrix,which refines the microstructure of the composite.The SiC_(p)/Mg_(94)Zn_(5)Y_(1)composites contain theα-Mg,I-phase(quasicrystal phase),and SiC_(p)phase.The damping capacities and mechanical properties of the SiC_(p)/Mg_(94)Zn_(5)Y_(1)composites were evaluated by the dynamic mechanical analyzer and an AG-X testing machine,respectively.The mechanical properties of the composites are better than those of the original Mg_(94)Zn_(5)Y_(1)alloy.The 1.0wt%SiC_(p)/Mg_(94)Zn_(5)Y_(1)composite exhibits the compressive strength of 350 MPa.The damping properties of all the composites are much higher than those of the parent alloy.The optimal damping capacity is achieved when the composite contains 0.5wt%SiC_(p).Moreover,according to the efficiency coefficient method,the 1.0wt%SiC_(p)/Mg_(94)Zn_(5)Y_(1)composite has the optimal comprehensive properties.
作者
万迪庆
董少云
王厚彬
胡佳俊
薛雁丹
韩国梁
康杰
曾观梅
王玉
汤浩
杨帆
Wan Diqing;Dong Shaoyun;Wang Houbin;Hu Jiajun;Xue Yandan;Han Guoliang;Kang Jie;Zeng Guanmei;Wang Yu;Tang Hao;Yang Fan(School of Materials Science and Engineering,East China Jiaotong University,Nanchang 330013,China)
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2022年第11期4003-4009,共7页
Rare Metal Materials and Engineering
基金
National Natural Science Foundation of China(51665012)
Jiangxi Province Science Foundation for Outstanding Scholarship(20171BCB23061,2018ACB21020)
Primary Research&Development Plan of Jiangxi Province(2019BBEL50019)。
