摘要
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℃。
Al2O3 dispersion strengthened Cu-25%Cr composites were prepared by hot-pressed sintering technology.The microstructure and properties of the composite were examined.The influence of cold deformation on the microstructure and properties of the material was investigated,and its softening temperature was also measured.The results show that electrical conductivity of the composite first increases and then decrease,with increasing deformation.The electrical conductivity increases from 18.3 mS·m^-1 to 23 mS·m^-1 after deformation of 60%.Hardness and tensile strength increase 55HV and by 80 percent to the peak values of 150HV and 413MPa for the composite with the deformation of 80%,respectively.The softening temperature of the composite is about 600℃.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2008年第5期13-17,共5页
Transactions of Materials and Heat Treatment
基金
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)
关键词
复合材料
冷轧
导电率
显微组织
composite
cold-roll
electrical conductivity
microstructure
