Influence of laser deposition technique on surface integrity of 12 Ni maraging tool steel
by Zoran Bergant; Janez Grum
International Journal of Microstructure and Materials Properties (IJMMP), Vol. 8, No. 1/2, 2013

Abstract: The aim of this investigation is to study the material properties of two coating deposition techniques on 12 Ni maraging tool steel specimens. The first technique is the Nd:YAG laser cladding with coaxial powder injection and the second is the hybrid process of flame spraying with subsequent Nd:YAG laser remelting of sprayed coating. The subsequent precipitation annealing is necessary to obtain the material with similar properties as base material. The surface integrity was studied based on macro- and microstructural examination, chemical analysis and the microhardness and the residual stress distribution. All specimens were precipitation-hardened on required hardness. The through-depth residual stresses were measured and compared. The research shows that the material quality of laser-cladded layers is better than that of layers that were sprayed and laser remelted.

Online publication date: Tue, 30-Apr-2013

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