毕莉明,刘平,陈小红,宋鑫,刘新宽,马凤仓,李伟

• 1:上海理工大学材料科学与工程学院

摘要(Abstract)：

分别采用冷拉拔和冷轧变形并结合中间退火工艺,制备了丝状和带状形变Cu-8.3Fe-1Ag原位复合材料。用SEM、精密万能试验机、显微硬度计和电阻测量仪对两种变形方式下试样的微观组织、力学性能和导电性能进行了比较研究。微观组织观察表明:冷拉拔和冷轧变形试样的横截面组织形貌有显著差异,前者为基体上分布着弯曲、扭折、交叠的蠕虫状相,后者为基体上定向排列着与冷轧方向平行的平直颗粒相。力学性能和导电率测试结果表明:相同应变量下,冷拉拔变形的抗拉强度、硬度均高于冷轧变形,但二者的导电率几乎相同。应变量达到6.70时,二者的抗拉强度/硬度/导电率分别达到838 MPa/149 HV/58%IACS和924 MPa/160 HV/58%IACS。

关键词(KeyWords)： Cu-Fe-Ag;原位复合材料;抗拉强度;电导率;变形方式

Abstract:

Keywords:

基金项目(Foundation): 上海市科委基础研究重点项目(10JC1411800);; 上海市教育委员会重点学科建设项目(J50503);; 上海市研究生创新基金项目(JWCXSL1101);; 上海市教委创新项目(11YZ112)

作者(Author): 毕莉明,刘平,陈小红,宋鑫,刘新宽,马凤仓,李伟

DOI: 10.13289/j.issn.1009-6264.2012.03.009

参考文献(References)：

• [1]赵冬梅,董企铭,刘平,等.铜合金引线框架材料的发展[J].材料导报,2001,15(5):18-20.ZHAO Dong-mei,DONG Qi-ming,LIU Ping,et al.Development of copper alloy for leadframe[J].Materials Review,2001,15(5):18-20.
• [2]Leprince W Y,Han K,Zhang K Y,et al.Microstructure in Cu-Nb microcomposites[J].Materials Science and Engineering A,2003,351:214-223.
• [3]刘平.超高强度铜基原位复合材料研究进展[J].金属热处理,2008,33(1):72-76.LIU Ping.Research progress on super-strength copper-based in-situ composites[J].Heat Treatment of Metals,2008,33(1):72-76.
• [4]Hong S I,Hill M A.Microstructural stability and mechanical response of Cu-Ag microcomposite wires[J].Acta Metall Mater,1998,46:4111-4122.
• [5]Hong S I,Hill M A.Microstructure and conductivity of Cu-Nb microcomposites fabricated by the bundling and drawing process[J].Scripta Mater,2001,44:209-215.
• [6]陈小红,刘平,田保红,等.微合金化对Cu-15Cr原位复合材料组织和性能的影响[J].材料热处理学报,2009,30(2):44-49.CHEN Xiao-hong,LIU Ping,TIAN Bao-hong,et al.Effects of micro-alloying on microstructure and mechanical properties of Cu-15Cr in-situcomposites[J].Transactions of Materials and Heat Treatment,2009,30(2):44-49.
• [7]GE Ji-ping.Modelling of the breakup of Cr filaments in wire-drawn Cu-based in situ composite[J].The Chinese Journal of Nonferrous Metals,1999,5:223-229.
• [8]Vidal V,Thilly L,Petegem S V,et al.Plasticity of nanostructured Cu-Nb-based wires:Strengthening mechanisms revealed by in situ deformation underneutrons[J].Scripta Materialia,2009,60(3):171-174.
• [9]宁远涛,张晓辉,张婕.大变形Cu-10Ag原位纳米纤维复合材料[J].稀有金属材料与工程,2005,34(12):1930-1934.NING Yuan-tao,ZHANG Xiao-hui,ZHANG Jie.Cu-10Ag in situ nano-fibre composite prepared by heavy deformation[J].Raremetal Materials andEngineering,2005,34(12):1930-1934
• [10]Funkenbusch P D,Lee K,Courtney T H.Ductile two-phase alloys:Prediction of strengthening at high strains[J].Metallurgical and MaterialsTransactions A,1987,18:1249-1256.
• [11]王平,崔建忠.金属塑性成形力学[M].北京:冶金工业出版社,2006:88-89.
• [12]康永林.轧制工程学[M].北京:冶金工业出版社,2004:51-52.
• [13]梁耀能,梁思祖,利伯林,等.机械工程材料[M].广州:华南理工大学出版社,2002:231-232.
• [14]Verhoeven J D,Downing H L,Chumbley L S,et al.Resistivity and microstruture of heavily drawn Cu-Nb alloys[J].Journal Applied Physics,1989,65:1293-1301.

文章评论(Comment)：