| 引用本文: | 梁燕,王献辉,邹军涛,梁淑华,范志康.稀土Dy对Cu-Cr-Ti合金时效态组织和性能的影响[J].材料科学与工艺,2010,18(5):614-618.DOI:10.11951/j.issn.1005-0299.20100505. |
| LIANG Yan,WANG Xian-hui,ZOU Jun-tao,LIANG Shu-hua,FAN Zhi-kang.Effect of rare earth Dy on microstructure and properties of aged Cu-Cr-Ti alloy[J].Materials Science and Technology,2010,18(5):614-618.DOI:10.11951/j.issn.1005-0299.20100505. |
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| 摘要: |
| 为了研究稀土Dy对Cu-Cr-Ti合金组织和性能的影响,采用金相显微镜、X射线衍射仪、扫描电子显微镜和能谱仪对添加不同含量Dy的时效态Cu-Cr-Ti合金析出相形貌、组织和成分进行了表征和分析,并对合金的硬度和导电率进行了测试.研究表明:Cu-0.3Cr-0.2Ti合金中形成新相CuTi3;富Dy相以4种形态存在,在Cu基体上以球形、柳叶状、颗粒状存在,晶界上以短棒状析出.经500℃保温1h时效处理后,Cu-0.3Cr-0.2Ti合金中0.1%Dy的添加有效地提高了合金的硬度和导电率,其硬度和导电率分别达138.8HV和98.3%IACS. |
| 关键词: 时效处理 Cu-Cr-Ti合金 稀土Dy 微观组织 硬度 导电率 |
| DOI：10.11951/j.issn.1005-0299.20100505 |
| 分类号:TG156.92 |
| 基金项目:国家自然科学基金资助项目(505740750);教育部新世纪优秀人才计划资助项目(NCET-05-0873);西安理工大学科技创新与特色研究计划资助项目(101220513) |
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| Effect of rare earth Dy on microstructure and properties of aged Cu-Cr-Ti alloy |
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LIANG Yan1,2, WANG Xian-hui1, ZOU Jun-tao1, LIANG Shu-hua1, FAN Zhi-kang1
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1.School of Materials Science and Engineering,Xi’an University of Technology,Xi’an 710048,China;2.Northwest Institute for Nonferrous Metal Research,Xi’an 710016,China
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| Abstract: |
| In order to study the influence of rare earth Dy addition on microstructure and properties of Cu-Cr-Ti alloy,the morphology of precipitation phases,microstructure and composition of aged Cu-Cr-Ti alloys with different Dy contents were characterized by optical microscope(OM),X-ray diffractometer(XRD),scanning electron microscopy(SEM),and the hardness and electrical conductivity were tested as well.Results show that a new phase CuTi3 is formed in the Cu-0.3Cr-0.2Ti alloy,and Dy-rich phases are precipitated in the forms of sphere,lancet shape and granular in Cu matrix,and rod-like shape along the grain boundary.The addition of 0.1wt% Dy can effectively increase the hardness and electrical conductivity of Cu-0.3Cr-0.2Ti alloy,which can reach 138.8 HV and 98.3% IACS respectively after being aged at 500 ℃ for 1 h. |
| Key words: aging treatment Cu-Cr-Ti alloy rare earth Dy microstructure hardness electrical conductivity |
