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REDISTRIBUTION OF ELEMENTS IN STEEL LASER WELD JOINT STUDIED WITH LASERINDUCED BREAKDOWN SPECTROSCOPY

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Redistribution of elements in joints of steel plates after laser welding is studied. Laser emission spectral analysis (LIBS) reveals the following trends of horizontal and vertical migration of alloying elements: Mn towards the front side of the weld joint, Al towards the back side with concentration at the central line. Dependences of the redistribution on welding type and parameters are studied.

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