Abstract
Microstructures of laser surface melted (LSM) and alloyed (molybdenum and tantalum) type 304L stainless steel have been studied. δ-ferrite was found to be the primary solidification phase for these alloys. Chemical analysis of the laser-processed layers indicated no compositional variation between the as-received and laser-processed layers in terms of major alloying elements, i.e. chromium and nickel. However, laser processing resulted in a lowered manganese content, by about 15%. Furthermore, TEM studies showed laser processing to introduce extensive amorphous Mn-Si precipitation into the microstructure.
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Akgun, O.V., Inal, O.T. Laser surface melting and alloying of type 304 L stainless steel. J Mater Sci 30, 6097–6104 (1995). https://doi.org/10.1007/BF01151533
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DOI: https://doi.org/10.1007/BF01151533