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Faculty of Mechanical Engineering, Lj. (FSLJ)
  • Laser cladding and heat treatment of Ni-Co-Mo maraging steel [Elektronski vir]
    Bergant, Zoran ...
    The subject of this paper is a surface-integrity analysis of Ni-Co-Mo laser cladded maraging steel (EN 10027-2, W. No. 1.2799). Experiments were performed on 3.3 kW Nd:YAG laser system with coaxial ... injection of Ni-Co-Mo powder alloy that integrates various modes of laser beam guidance and different degrees of overlapping. The specimens were subsequently solution and precipitation annealed in order to examine a precipitation hardening of the newly formed material using the scanning electron microscopy (SEM) with a microprobe for energy-dispersive spectroscopy analysis, supported by microhardness tests. The residual stresses were determined by a hole-drilling method, using the integral method for residual stresses calculation. Favourable compressive residual stresses are generated in laser cladded layers due to a phase transformation from austenite to lath-martensite. The optimal selection of laser cladding process parameters enables efficient and cost-effective maintenance of damaged surfaces on the vital parts of die-casting tools, made from 1.2799 maraging steel.
    Source: Journal of ASTM International [Elektronski vir]. - ISSN 1546-962X (Vol. 8, no. 5, 2011, str. [1-12])
    Type of material - e-article
    Publish date - 2011
    Language - english
    COBISS.SI-ID - 12049435

    Link(s):

    http://www.astm.org/DIGITAL_LIBRARZ/JOURNALS/JAI/PAGES/JAI103435.htm
    DOI

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