时效处理对Cu-Y2O3-Ti复合材料组织及性能的影响
Effect of aging treatment on microstructure and properties of Cu-Y2O3-Ti composite
秦永强 1韦国宣 2罗来马 1庄翌 2马冰 2张一帆 2吴玉程1
作者信息
- 1. 合肥工业大学材料科学与工程学院,安徽 合肥 230009;有色金属与加工技术国家地方联合工程研究中心,安徽 合肥 230009;高性能铜合金材料及成形加工教育部工程研究中心,安徽 合肥 230009
- 2. 合肥工业大学材料科学与工程学院,安徽 合肥 230009
- 折叠
摘要
以Cu、Y、Ti和CuO粉末为原料,采用机械合金化(MA)和热还原的方法制备了Cu-Y2O3-Ti复合粉末.然后经放电等离子烧结(SPS)技术制备了Cu-Y2O3-Ti复合材料,并对材料进行了900℃固溶1h和不同温度时效2h的处理.采用光学显微镜(OM)、扫描电镜(SEM)、X射线衍射仪(XRD)、能谱仪(EDS)、拉伸试验和导电率测量仪等研究了不同温度时效处理对Cu-Y2O3-Ti复合材料组织及性能的影响.结果表明:随着时效温度的升高,Cu-Y2O3-Ti复合材料的晶粒和第二相尺寸增大,导电率降低,最大应变和抗拉强度先增大后减小.Cu-Y2O3-Ti复合材料经900℃固溶1h+400℃时效2h后,综合性能最优,其具有良好塑性的同时,抗拉强度和导电率分别达到326.4MPa和73.0%IACS.
Abstract
Cu-Y2O3-Ti composite powder was prepared by mechanical alloying(MA)and thermal reduction methods using Cu,Y,Ti,and CuO powders as raw materials.Then,the Cu-Y2O3-Ti composite was prepared by spark plasma sintering(SPS)technology,and the composite was subjected to solution treatment at 900℃for 1 h and aging treatment at different temperatures for 2 h.The effect of aging treatment at different temperatures on microstructure and properties of the Cu-Y2O3-Ti composite was studied by means of optical microscope(OM),scanning electron microscopy(SEM),X-ray diffraction(XRD),energy dispersive spectroscopy(EDS)analysis,tensile testing and conductivity measurement instruments.The results show that as the aging temperature increases,the grain size and second phase size of the Cu-Y2O3-Ti composite increase,the conductivity decreases,and the maximum strain and tensile strength first increase and then decrease.The comprehensive properties of the Cu-Y2O3-Ti composite are the best after solution treatment at 900℃for 1 h and aging at 400℃for 2 h,it exhibits good plasticity,and the tensile strength and conductivity are 326.4 MPa and 73.0%IACS,respectively.
关键词
Cu-Y2O3-Ti复合材料/弥散强化/固溶时效/力学性能Key words
Cu-Y2O3-Ti composite/dispersion strengthening/solution and aging/mechanical property引用本文复制引用
基金项目
安徽省自然科学基金(2208085ME122)
安徽省科技重大专项(202103a05020002)
国家重点研发计划(2019YFE03120002)
出版年
2024
NETL
NSTL
万方数据