Influence of laser deposition technique on surface integrity of 12 Ni maraging tool steel. (2013)

• Record Type: Journal Article
• Authors: Bergant, Zoran; Grum, Janez
• Is Part Of: International journal of microstructure and materials properties. Volume 8:Number 1/2(2013)
• Page Start: 17
• Page End: 26
• Publication Date: 2013
• Subjects: laser cladding -- maraging steel -- surface integrity -- laser remelting -- residual stresses -- flame spraying -- coating -- microhardness -- microstructure -- precipitation annealing; Microstructure -- Periodicals; Materials -- Properties -- Periodicals; 620.11299
• Languages: English
• ISSNs: 1741-8410

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.