Compositional modification of Ni-base alloys for laser-deposition technologies

I. Hemmati; V. Ocelík; J.Th.M. De Hosson    University of Groningen, Groningen, The Netherlands


Cracking of the clad layers is a major issue in laser cladding of hard wear-resistant coatings such as Ni-Cr-B-Si-C alloys. One way to solve this problem is to increase the toughness of these alloys by compositional and microstructural modifications. The focus of this chapter is on defining a procedure to select alloying elements for microstructural refinement of Ni-Cr-B-Si-C alloys and assessing the effectiveness of such a refinement as a toughening mechanism to solve the cracking problem of laser deposited coatings. It is shown that the addition of Nb in ...

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