铝合金真空钎焊接头组织分析  

Microstructure Analysis of Aluminum Alloy Vacuum Brazing Joints

作　　者：曹秀丽[1] 王承志[1] 李亚江[2] 

机构地区：[1]沈阳理工大学材料科学与工程学院,辽宁沈阳110168 [2]山东大学

出　　处：《沈阳理工大学学报》2005年第3期10-14,共5页Journal of Shenyang Ligong University

摘　　要：LT-3铝合金是一种三层包覆合金,主要用于铝制冷却器、散热器的真空钎焊.利用金相显微镜观察了钎缝中生成的显微组织,利用显微硬度计对钎焊接头的显微硬度进行了测量,并进行了X射线衍射试验.试验结果表明,在钎缝中生成了网状的共晶组织,钎缝处的显微硬度比芯层的显微硬度高.LT-3 aluminum alloy is a kind of three-layer cladding aluminum alloy. It is mainly used in the vacuum brazing of radiator and cooler. The microstructure characteristics in the vacuum-brazing joint of LT-3 aluminum alloy is analyzed by metallographical microscope and micro-hardness. The test results indicate that netshape eutectic structure is formed in the brazing beam. And the micro-hardness of the brazing beam is higher than that of the core layer metal.

关 键 词：LT-3铝合金 真空钎焊 显微组织 显微硬度 

分 类 号：TG407[金属学及工艺—焊接]