热机械处理对Ag-15Cu原位纤维复合材料结构及性能的影响  

Effect of Thermomechanical Treatment on Microstructure and Properties of Ag-15Cu in situ Filamentary Composites

作　　者：王传军[1] 宁远涛[1] 管伟明[1] 耿永红[1] 毕珺[1] 张昆华[1] 

机构地区：[1]昆明贵金属研究所云南省贵金属材料重点实验室,云南昆明650106

出　　处：《稀有金属材料与工程》2011年第11期1994-1997,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(50371031);云南省中青年学术带头人后备人才项目(2006py01-42)

摘　　要：采用包括热挤压、热处理及冷拉拔在内的热机械处理制备了Ag-15Cu原位纤维复合材料,其强度达到996MPa并具有62%IACS的电导率。均匀化热处理及低温时效处理能有效提高材料的强化潜力,而在形变过程中的多次低温热处理即使在较大的应变条件下也能大大提高材料的电导率而强度没有降低。讨论了热处理对材料结构和性能的影响机理。Thermomechanical treatments including hot extrusion,heat treatment and cold drawing were used to prepare Ag-15Cu in situ filamentary composites.The obtained composites can achieve a strength of 996 MPa and keep a conductivity of 62%IACS.Homogenization treatment and low temperature aging can effectively improve the strengthening potential of the material,while low temperature heat treatment of several times during drawing can greatly improve the conductivity and there is no loss of strength even at high strain.The influencing mechanism of heat treatments on the microstructure and properties were discussed.

关 键 词：原位纤维复合材料 AG-CU合金 热机械处理 微观结构 强度 电导率 

分 类 号：TB333[一般工业技术—材料科学与工程]