形变Cu-20vol%Fe原位复合材料研究  

Investigation of a Deformation Processed Cu-20% Fe in Situ Composite

作　　者：葛继平[1] 陈美玲[1] 刘书华[1] 

机构地区：[1]大连铁道学院材料科学与工程系,辽宁大连116028

出　　处：《材料热处理学报》2003年第4期27-32,36,共7页Transactions of Materials and Heat Treatment

基　　金：大连市科技计划资助 (2 0 0 2A1GX0 2 4 )

摘　　要：研究了形变Cu 2 0vol%Fe原位复合材料的组织结构 ,结果发现 ,合金经室温变形后 ,Fe相由铸造态的树枝状变成纤维状组织 ,在纵截面上呈现片状 ,其厚度随变形量增加而减小 ,在横断面上呈弯曲的薄片状。随变形量增加 ,Cu 2 0vol%Fe合金的强度提高。适当的中间热处理可以大大降低其电阻率 ,经过室温形变和中间热处理的合理配合 ,可获得良好强度和电导率的结合。Cu-20 vol % Fe in situ composite has been produced from as-cast alloys.After the alloys were drawn to various strains at room-temperature,the Fe dendrites are drawn into fine ribbons.The Fe ribbons become curl and fold in cross-section.The tensile strengths of the material increase with increasing amount of wire-drawing.A series of heat treatments have been done at various stages of wire-drawing to promote iron precipitation from the copper.Good combinations of the tensile strength/electrical conductivity are achieved.

关 键 词：Cu-20vol%Fe 形变 复合材料 强度 电导率 

分 类 号：TG331[金属学及工艺—金属压力加工] TG113