Research on the Laser Welding Technology of LF21

Jia Rui Qi; Xu Ren Huang; Hai Xia Sun; Yan Li Li

doi:10.4028/www.scientific.net/AMR.941-944.2012

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 941-944Research on the Laser Welding Technology of LF21

Research on the Laser Welding Technology of LF21

Abstract:

Traditional welding methods are difficult to adapt to the development of welding technology of aluminum alloys. Laser welding plays an important role in this field increasingly for its advantages. In this investigation, LF21 plate with a thickness of 2mm was welded utilizing the pulsed laser welding and the mechanical properties of the laser welded joints are analyzed. The tensile strength of welded joint is in the range of 196 Mpa to 232 Mpa. The maximum tensile strength is obtained at the working current of 250 A, pulse width of 6 ms and pulse frequency of 2 Hz. The maximum tensile strength can reach 87% of base material. The intensity factor of welded joint is in the range of 74% to 87%. The welded joint can meet the requirements of users.

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Periodical:

Advanced Materials Research (Volumes 941-944)

Pages:

2012-2015

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.941-944.2012

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Online since:

June 2014

Authors:

Jia Rui Qi*, Xu Ren Huang, Hai Xia Sun, Yan Li Li

Keywords:

Aluminium Alloy, Laser Welding, LF21, Welded Joints

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