The comparison of the phase transformations going on due to high energy ball milling (HEBM) and
produced by pressure-less Direct Metal Laser Sintering (DMLS developed by EOS company) was
carried out, by using an α-Fe, Ni and Cu3P powder mixture. It could be shown by X-ray
diffractograms (XRD) of the two type of products, that by mechanical alloying a similar phase
transformation occurs due to solid state reactions between the metal partners as in the case of laser
sintering, in a given range of laser scanning speed in a laboratory laser equipment. According to the
XRD evaluation the same metastable, γ-steel like phases were formed.
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