摘要
在铝铜合金中加入不同含量的Ti、B,在相同熔炼工艺及热处理状态下,获得不同组织的AL-Cu-Ti-B合金,通过XRD、SEM、金相显微镜对其微观组织及布氏硬度进行分析。结果表明：组织中主要为α固溶体和θ相（A l2Cu）以及A lCu2Ti、A l3Ti、TiB2。540℃固熔处理后,合金都在15 h达到峰值硬度129 HBS,24 h又达到另外一个峰值硬度128 HBS。200℃时效后,加入钛硼的铝铜合金1.5~2 h达到最大硬度140 HBS,远快于铝铜二元合金3.5~4 h达到最大硬度115 HBS。
Different contents of titanium and boron are added in aluminium-copper alloy.At the same condition of metallurgy and hot treatment,different microstructures are obtained,which are studied by means of XRD,SEM,optical microstructures and Brinell hardness.The microstructure is α solution phrase and θ phrase（Al2Cu）and AlCu2Ti,Al3Ti,TiB2.With the solutionising temperature of 540℃,on the time of 15h,different contents of titanium and boron are added in the aluminium-copper alloy,Brinell hardness reaches the peak of 129HBS,and on the time of 24h,Brinell hardness reaches another peak of 128HBS.Aging at the temperature of 200℃,on the time of 1.5~2h,different contents of titanium and boron are added to the aluminium-copper alloy,the Brinell hardness reaches the top of 140HBS,far quicker than the aluminium-copper alloy reaches the top Brinell hardness.
出处
《西华大学学报（自然科学版）》
CAS
2010年第5期98-101,共4页
Journal of Xihua University:Natural Science Edition
