周洪雷,田保红,刘平,刘勇,任凤章,贾淑果,董企铭

• 1:河南科技大学材料科学与工程学院
• 2:河南省有色金属材料科学与加工技术重点实验室

摘要(Abstract)：

采用真空热压烧结工艺制得Al2O3弥散强化Cu-25%Cr复合材料,分析了其显微组织与性能。经冷轧变形,研究了显微组织及性能变化,并测定了该复合材料的软化温度。结果表明:Cu-Al2O3/Cr复合材料的电导率随着轧制变形程度的增大,开始上升,然后下降。其导电率未变形时为18.3mS.m-1,经60%变形后,导电率达到最大,为23mS.m-1;Cu-Al2O3/Cr复合材料的硬度和抗拉强度随变形量的增加不断上升,80%变形后,硬度增加了55HV,达到150HV,抗拉强度增幅达80%,达到413MPa;并测得合金的抗软化温度约为600℃。

关键词(KeyWords)： 复合材料;冷轧;导电率;显微组织

Abstract:

Keywords:

基金项目(Foundation): 河南省杰出青年科学基金(0512002700);; 河南省高校创新人才培养工程(豫高教2005-126);; 河南科技大学基金项目(2007ZY060)

作者(Author): 周洪雷,田保红,刘平,刘勇,任凤章,贾淑果,董企铭

参考文献(References)：

• [1]冼爱平,朱耀宵.Cu-Cr触头合金制备技术的发展[J].金属学报,2003,39(3):225-233.XIAN Ai-ping,ZHU Yao-xiao.The development of manufacture processing for Cu-Cr contact alloy[J].Acta Metallurgica Sinica,2003,39(3):225-233.
• [2]张永安,熊柏青,刘红伟,等.CuCr25触头材料的喷射成形制备及其组织分析[J].中国有色金属学报,2003,13(5):1067-1070.ZHANG Yong-an,XIONG Bai-qing,LIU Hong-wei.Spray forming process and microstructure of CuCr25 contactor material[J].The Chinese Journal ofNonferrous Metals,2003,13(5):1067-1070.
• [3]夏栗.喷射成形制备铜铬合金触头材料[D].北京:北京科技大学,2003.
• [4]Zhang D L,Mihara K.Effect of the amount of cold working and ageing on the ductility of a Cu-15%Cr-0.2%Ti in-situ composite[J].Materials Science andEngineering,1999,266(1-2):99-108.
• [5]Cui Y F.Properties of Cu50Cr50 contact material[J].Rare Metal Materials and Engineering,1997,26(5):40-43.
• [6]Jin Y,Adachi K,Takeuchi T.et a1.Correlation between the electrical conductivity and aging treatment for a Cu-15 wt%Cr alloy composite formed in-situ[J].Materials Letters,1997,32(5-6):307-311.
• [7]Jin Y,Adachi K,Takeuchi T.et a1.Correlation between the cold-working and aging treatments in a Cu-15 wt pct Cr in situ composite[J].Metallurgical andMaterials Transactions,1998,29A(8):2195-2203.
• [8]Hague D C,Mayo M J.Modeling densification during sinter-forging of yttria-partially-stabilized zirconia[J].Mater Sci Eng A,1995,204(1):83-89.
• [9]李蔚,高濂,李强.热压烧结制备纳米Y-TZP材料形貌及结构的分析[J].硅酸盐学报,2001,29(1):84-86.LI Wei,GAO Lian,LI Qiang.Analysis of the micromorphology and structure of nano Y-TZP materials sintered by hot-pressing[J].Journal of the ChineseCeramic Society,2001,29(1):84-86.
• [10]周志明,蒋鹏,王亚平.CuCr25合金的机械变形及性能[J].稀有金属材料与工程,2005,34(5):830-832.ZHOU Zhi-ming,JIANG Peng,WANG Ya-ping.Mechanical deformation and properties of CuCr25 alloy[J].Rare Metal Materials and Engineering,2005,34(5):830-832.
• [11]翁宇庆.超细晶钢-钢的组织细化理论与控制技术[M].北京:冶金工业出版社,2003,7-9.

文章评论(Comment)：