【作者】 管仁国； 王祥； 张扬； 王宇翔；

【Author】 GUAN Ren-guo;WANG Yu-xiang;WANG Xiang;ZHANG Yang;School of Materials and Metallurgy,Northeastern University;

【机构】 东北大学材料与冶金学院；

【摘要】 连续流变挤压技术具有工艺流程短、产品性能优良等优点,本文论述了该技术在制备高性能铝材中的应用。采用连续流变挤压制备了Al-Ti-B晶粒细化剂与铝合金电工铝材。连续流变挤压制备的Al-Ti-B晶粒细化剂的细化效果优于国外同类产品,且制备成本低;制备的6201合金导线经过T8热处理后,抗拉强度和导电率分别为326MPa和56.2%IACS,比国标中高强度Al-Mg-Si合金导线分别提高了10.5%和6%;制备的Al-Sc-Zr耐热铝合金导线的抗拉强度、伸长率和导电率分别为223MPa、7.1%和60.5%IACS,长期运行温度达到230℃,抗拉强度、伸长率与导电率分别比日本耐热铝合金导线提高了39.4%、255%和0.83%。;累积连续挤压技术能连续高效制备铝合金超细晶材料,制备的Al-Sc-Zr合金杆经过累积连续挤压后,合金晶粒尺寸从100μm细化至800nm。更多还原

【Abstract】 The continuous rheo-extrusion has been applied to prepare high performance aluminum alloy,due to its inherent advantages of short process and high performance of product.The Al-Ti-B refiner processed by continuous rheo-extrusion had better grain refinement effect and lower cost than import refiner.The tensile strength and conductivity of 6201 alloy conductor after T8 treatment were 326 MPa and 56.2%IACS,which were increased by 10.5% and 6%compared to that of high-strength Al-Mg-Si alloy conductor in Chinese standard.A novel heat-resistant Al-Sc-Zr alloy conductor with the tensile strength of 223 MPa,elongation of 7.1%,and conductivity of 60.5% was also prepared,and its long-term operation temperature was230℃.The tensile strength,elongation and conductivity of the Al-Sc-Zr alloy conductor were higher 39.4%,255% and 0.83% than that of Japaneseheat-resistant Alalloy conductor(IEC62004-2007 ATl).Accumulative Continuous Extrusion Forming(ACEF) has been applied in preparing ultra-fine grain Al alloy continuously and efficiently,the grain size of Al-Sc-Zr alloy wire was refined from 100μm to 800 nm after one pass ACEF.更多还原