原位合成TiC弥散强化铜合金工艺与性能  

Process and Properties of In-situ Synthesis TiC Dispersion-strengthened Cu Alloy

作　　者：宋丹[1] 葛熔熔 陈建清[1] 倪世展 江静华[1] 马爱斌[1] SONG Dan;GE Rongrong;CHEN Jianqing;NI Shizhan;JIANG Jinghua;MA Aibin(College of Mechanics and Materials,Hohai University,Nanjing 210098,China)

机构地区：[1]河海大学力学与材料学院

出　　处：《热加工工艺》2019年第22期38-41,共4页Hot Working Technology

基　　金：江苏省自然科学基金(BK20140856);河海大学中央高校基本业务经费项目(2015B18614);江苏省产学研联合创新资金项目(BY2015002-02);江苏省六大人才高峰计划项目(2015-XCL-196)

摘　　要：采用热力学计算分析了在Cu-Ti-C体系中原位合成TiC弥散强化Cu合金的可行性;采用直接熔炼法原位合成了含lwt%TiC的弥散强化Cu合金,优化了工艺参数。采用XRD、SEM和EDS分析了合金的相结构及显微形貌。结果表明,TiC颗粒呈微团聚状分布(粒径0.5〜1|xm),分布均匀,与基体结合良好。制备的Cu-lwt%TiC合金的抗拉强度和导电率分别为258.5 MPa和76.5%IACS;与重熔态纯铜相比,合金的力学性能显著提高而导电性能下降。The feasibility of in-situ synthesis of TiC dispersion-strengthening Cu alloy (Cu-TiC) in Cu-Ti ・C system wasanalyzed by thermodynamic calculation analysis. The dispersion・strengthened Cu alloy with lwt%TiC was in・situ prepared bydirect-arc melting method, and then the process parameters were optimized. The phase structure and microstructure of thealloy were analyzed by XRD, SEM and EDS . The results show that the distribution of TiC is in microaggregation (particlesize is 0.5-1 |xm) and in uniform distribution, which has a good bonding with the matrix. The tensile strength and conductivityof the prepared Cu- lwt%TiC alloy is 258.5 MPa and 76.5%IACS, respectively. Compared with that of the remelting purecopper, the mechanical properties of the alloy improve obviously and the conductivity decreases.

关 键 词：原位合成 CU合金 TiC弥散强化 力学性能 导电性 

分 类 号：TG146.11[一般工业技术—材料科学与工程]