Temperature Gradient and Heat Conduction of Titanium Alloy during Laser Welding

Ke Rong Zhang; Jian Xun Zhang

doi:10.4028/www.scientific.net/AMR.154-155.42

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Effect of Pulsed Magnetic Field on Structure Refinement of Pure Magnesium
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 154-155Temperature Gradient and Heat Conduction of...

Temperature Gradient and Heat Conduction of Titanium Alloy during Laser Welding

Abstract:

This paper set a numerical calculation model with local mesh refined for laser welding of titanium alloy applying body heat source model which can accurately describe the shape of keyhole and molten pool on laser welded joint. It calculated the change patterns of the temperature distribution and heat conduction in region of gas, liquid, and solid phase under different laser energy density on the stage of heating and cooling. The results showed that with the increase of the laser energy density t, the dimension of keyhole and molten pool, the temperature gradient and the duration of gas and liquid phase on the stage of heating and cooling are all expected to increase. Under the same laser energy density, temperature gradient has a maximum value in the region of gas phase, secondly is in liquid phase, and minimum in solid phase.

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Periodical:

Advanced Materials Research (Volumes 154-155)

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42-45

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.154-155.42

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Online since:

October 2010

Authors:

Ke Rong Zhang, Jian Xun Zhang

Keywords:

Energy Density, Heat Conduction, Heat Input, Temperature Gradient

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