摘要
研究了1420铝锂合金在一定工艺条件下,添加中间层金属进行真空扩散焊接的可行性,通过对接头显微组织、断口形貌、显微硬度和成分的测试与分析,发现在一定的工艺条件下,扩散焊接接头处原子扩散充分,形成了良好的冶金结合;采用铜中间层金属可以获得组织均匀的焊接接头;采用镍中间层能使接头处原子通过相互扩散形成金属间化合物强化相,可适当提高接头强度。
The feasibility of diffusion bonding of 1420 Al-Li alloy under certain technical conditions was investigated in this paper. The microstructure, fracture morphology and microhardness of the joints were studied. The results show that the excellent metallurgical bonding can be obtained through the sufficient diffusion of atoms near the joint boundaries by using the reasonable processing parameters. The welded joint with homogenous microstructures can be obtained by using the copper as the interlayer material. When the nickel is used as interlayer material, the intermetallic compounds are formed by diffusion, which can improve the strength of the joints.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2005年第10期101-104,共4页
Transactions of The China Welding Institution
关键词
1420铝锂合金
扩散焊
中间层
Aluminum alloys
Diffusion
Intermetallics
Lithium alloys
Mechanical properties
Microhardness
Microstructure
Soldered joints
