Numerical Investigations on Residual Stress in Laser Penetration Welding Process of Ultrafine-Grained Steel

<div>The instruments used for the analysis of the chemical composition of the weld bead. (a) FLS980-stm Edinburgh fluorescence spectrometer. (b) Metallographic microscope. (c) The cross section of the weld bead.</div>

Advances in Materials Science and Engineering

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Figure 2

Figure 2: Numerical Investigations on Residual Stress in Laser Penetration Welding Process of Ultrafine-Grained Steel 