Experimental Investigation of Maraging Steel Structure Obtained by Powder Bed Fusion Process with Milling Process

DOI

Bibliographic Information

Other Title
  • 粉末床溶融結合法で得られたマルエージング鋼造形物の詳細観察

Abstract

<p>This research aimed to examine the additive manufacturing process based on the observation of the sintered maraging steel manufactured by the powder bed fusion method. A combined processing of metal laser sintering with high speed milling was used for manufacturing of the sintered objects. The sintered workpiece was manufactured by recycled maraging steel powder. An equiaxial crystal was observed from the outer periphery to the center in the melt pool. The hardness in the height direction of the sintered workpiece was measured, which was approximately 370 to 400 HV, but only the top surface was 320 to 340 HV. As a result of observing the structure in the sintered workpiece, round like and horned like shaped contamination that were different from the solidification structure of the maraging steel was confirmed. These contaminations were confirmed to be TiO2 and TiN based on the analysis by EDX, and it was estimated to originate from the metal powder and the coating layer of the cutting tool.</p>

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Details 詳細情報について

  • CRID
    1390001288124998016
  • NII Article ID
    130007602853
  • DOI
    10.11522/pscjspe.2018a.0_90
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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