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Study on Microstructure and Properties of Welded Joint of LY12 Aluminum Alloy by Electron Beam Welding

YU Aiw

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Abstract

LY12 aluminum alloy was welded with vacuum electron beam welding, the effect of welding speed and electron beam current on the weld microstructure and mechanical properties of the welded joint were studied. The results show that with the increase of welding speed or decrease of electron beam current, the grains in weld metal can be refined, so the joint strength increases. When the electron beam current is 18mA, the welding speed is 1000mm/min, the grains of weld metal were finest, the tensile strength of the welded joint is 373.2 MPa.

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What this paper is about

LY12 aluminum alloy was welded with vacuum electron beam welding, the effect of welding speed and electron beam current on the weld microstructure and mechanical properties of the welded joint were studied. The results show that with the increase of welding speed or decrease of electron beam current, the grains in weld metal can be refined, so the joint strength increases. When the electron beam current is 18mA, the welding speed is 1000mm/min, the grains of weld metal were finest, the tensile strength of the welded joint is 373.2 MPa.

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Available abstract

LY12 aluminum alloy was welded with vacuum electron beam welding, the effect of welding speed and electron beam current on the weld microstructure and mechanical properties of the welded joint were studied. The results show that with the increase of welding speed or decrease of electron beam current, the grains in weld metal can be refined, so the joint strength increases. When the electron beam current is 18mA, the welding speed is 1000mm/min, the grains of weld metal were finest, the tensile strength of the welded joint is 373.2 MPa.

Key concepts: Welding, Electron beam welding, Materials science, Microstructure, Joint (building), Metallurgy, Cold welding, Ultimate tensile strength

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Study on Microstructure and Properties of Welded Joint of LY12 Aluminum Alloy by Electron Beam Welding — Research Paper | ScholarLens