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-Y_(2)O_(3)-Ti复合粉末。然后经放电等离子烧结(SPS)技术制备了Cu-Y_(2)O_(3)-Ti复合材料,并对材料进行了900℃固溶1 h和不同温度时效2 h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-Y_(2)O_(3)-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-Y_(2)O_(3)-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-Y_(2)O_(3)-Ti复合材料经900℃固溶1 h+400℃时效2 h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326.4 MPa和73.0%IACS。
Cu-Y_(2)O_(3)-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-Y_(2)O_(3)-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-Y_(2)O_(3)-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-Y_(2)O_(3)-Ti composite increase,the conductivity decreases,and the maximum strain and tensile strength first increase and then decrease.The comprehensive properties of the Cu-Y_(2)O_(3)-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.
作者
秦永强
韦国宣
罗来马
庄翌
马冰
张一帆
吴玉程
QIN Yong-qiang;WEI Guo-xuan;LUO Lai-ma;ZHUANG Yi;MA Bing;ZHANG Yi-fan;WU Yu-cheng(School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,China;National-Local Joint Engineering Research Centre of Nonferrous Metals and Processing Technology,Hefei 230009,China;Engineering Research Center of High Performance Copper Alloy Materials and Processing,Ministry of Education,Hefei 230009,China)
出处
《材料热处理学报》
CAS
CSCD
北大核心
2024年第5期25-31,共7页
Transactions of Materials and Heat Treatment
基金
安徽省自然科学基金项目(2208085ME122)
安徽省科技重大专项项目(202103a05020002)
国家重点研发计划资助项目(2019YFE03120002)。
