Peculiarities of high-strength aluminum-lithium alloys laser weldin

Lukin V.I., Ioda E.N., Panteleev M.D., Skupov A.A.
UDC
621.791.724
DOI
10.18577/2307-6046-2016-0-10-7-7
Article PDF (Russian) (903.79 KB)
How to cite
Lukin V.I., Ioda E.N., Panteleev M.D., Skupov A.A. Peculiarities of high-strength aluminum-lithium alloys laser weldin // Proceedings of VIAM. 2016. No. 10. DOI: 10.18577/2307-6046-2016-0-10-7-7. URL: https://test.viam.ru/en/journal/2016/10/7
Keywords
laser welding, aluminum-lithium alloys welding, mechanical properties, heat treatment, fractographic research, metallographic research.
Abstract

The structure formation features and mechanical properties of laser welded joints of Al–Li alloys V-1461, V-1469 are studied. It is found that the use of Al–Cu (Al–6Cu and Al–10Cu) filler materials improves the welded seam formation and mechanical properties of welded joint, reduces probability of defects formation such as porosity and incomplete fusion. For the welding joints done by laser welding with or without filler materials Sv-1201 and Sv-1217 there is no tendency to exfoliation and intergranular corrosion of laser welded joints. Postweld heat treatment slightly reduces the corrosion resistance. The work is executed within the frames of the complex scientific direction 10.8. «Fusion welding technologies of new structural materials» («The strategic direction of development of materials and technologies of their processing for the period till 2030»)

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