Characteristics of the laser clad metal made with pow der mixture of Ni-based alloy and tungsten carbide

Sahour, M. C.; Bahloul, A.; Vannes, A.B.

doi:10.1007/s12289-008-0121-1

Cited by 4 publications

(2 citation statements)

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“…Ni-W intermetallics (Ni 2 W 4 C, Ni 17 W 3 …) were also observed in NiCrBSi/WC composites processed by LC at high laser power and on a substrate pre-heated up to 400°C [63]. MMCs reinforced with WC have been successfully produced in a wide range of Ni-based alloys: pure Ni [60,64], NiCrSiFe [65], NiCrBSi alloys [62,63], Ni35 (containing Cr, Si, B and Fe) [61] or Ni60 (containing also Co) [66].…”

Section: Nickel and Nickel Alloys Matrix Compositesmentioning

confidence: 97%

“…by decreasing the laser power) [5,61]. Partial dissolution of WC in Ni alloys has been reported, leading to secondary precipitation of various types of tungsten carbides (secondary WC, W 2 C...) as well as of mixed carbides (M 7 C 3 , M 23 C 6 …) [5,60,62]. Ni-W intermetallics (Ni 2 W 4 C, Ni 17 W 3 …) were also observed in NiCrBSi/WC composites processed by LC at high laser power and on a substrate pre-heated up to 400°C [63].…”

Section: Nickel and Nickel Alloys Matrix Compositesmentioning

confidence: 99%

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On the Role of Interfacial Reactions, Dissolution and Secondary Precipitation During the Laser Additive Manufacturing of Metal Matrix Composites: A Review

Mertens¹,

Lecomte-Beckers²

2016

New Trends in 3D Printing

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Since current trends in the transportation, energy or mechanical industries impose increasingly demanding service conditions for metallic parts, metal matrix composites MMCs are the object of a growing interest. Powder-based laser additive manufacturing, which allows making parts with complex shapes, appears particularly adapted for the production of MMCs. This paper reviews the current state-of-the-art in the production of MMCs by additive processes, with the aim of assessing the potentials and difficulties offered by these techniques. Two main processing routes are envisaged, i.e. the processing of ex situ composites in which the reinforcing phase as a powder often of ceramic particles is directly mixed with the powder of the matrix alloy, and both powders are simultaneously processed by the laser."lternatively, the reinforcing phase can be produced in situ by a chemical reaction during the fabrication of the composite. For both processing routes, a careful control is needed to overcome challenges brought, e.g. by the behaviour of the reinforcement particles in the laser beam, by changes in laser absorptivity or by the dissolution of the reinforcing particles in the molten metal, in order to produce MMCs with enhanced usage properties.

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