冷变形及时效处理对CuSn10Zn2FeCo合金组织性能的影响  

Effect of cold deformation and aging treatment on microstructure and properties of Cu Sn10Zn2Fe Co alloy

作　　者：冯在强[1] 唐明奇[1] 王强松[2] 王自东[3] 闫镇威[1] 

机构地区：[1]华北水利水电大学机械学院,河南郑州450045 [2]有色金属制备与加工国家重点实验室,北京有色金属研究总院,北京100088 [3]北京科技大学材料科学与工程学院,北京100083

出　　处：《材料热处理学报》2016年第4期65-68,共4页Transactions of Materials and Heat Treatment

基　　金：河南省教育厅科学技术研究重点项目(14A430017;14A430004);国家自然科学基金(51301070)

摘　　要：利用XRD、SEM、TEM等测试分析手段,研究了冷变形及时效处理对Cu Sn10Zn2Fe Co合金组织性能的影响。结果表明：在冷变形量40%,400℃时效处理4 h条件下,合金试样抗拉强度和伸长率分别为635 MPa和19.5%。透射电镜观察显示合金基体中弥散分布着尺寸在10～50 nm不等的纳米强化相,纳米颗粒与基体界面关系良好。当冷变形量为60%时,析出相在时效过程中发生粗化现象,合金试样力学性能下降。Effect of cold deformation and aging treatment on microstructure and properties of Cu Sn10Zn2 Fe Co alloy was studied by means of XRD,SEM and TEM. The results show that after 60% cold deformation followed by aging at 400 ℃ for 4 h,the tensile strength and elongation of the Cu Sn10Zn2 Fe Co alloy are 635 MPa and 19. 5%,respectively. A large number of precipitated phases with sizes of 10-50 nm are observed in the copper alloy matrix by TEM,the interface between the nanoparticles and copper matrix is matched well. When cold deformation amount is 60%,the precipitated phase becomes coarsen during the aging treatment process,as a result,the mechanical properties of tested samples deteriorate.

关 键 词：锡青铜 冷变形 力学性能 组织 

分 类 号：TG146.1[一般工业技术—材料科学与工程]