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Stainless steel substrates were hardfaced with laser melted Colmony using a continuous wire injection technique. This process offers a number of advantages with respect to blown powder injection or remelting of predeposited plasma sprayed coatings. The microstructures of single pass laser clad deposits were examined and related to workpiece traverse velocity at constant laser output. Particular attention was dedicated to the effect of dilution of the cladding alloy due to convectional mixing with the partially melted substrate material. The solidification microstructure of the rapidly cooled cladded layer consisted predominantly of nickel rich cellular dendrites with interdendritic eutectic borides. Those determine to a great extent the hardness and wear characteristics of the clad material.

Additional information

Authors: HAEMERS T A M, JRC Ispra (IT);RICKERBY D G, JRC Ispra (IT);LANZA F, JRC Ispra (IT);GEIGER F, JRC Ispra (IT)
Bibliographic Reference: Paper presented: 8th CIMTEC, Firenze (IT), June 29 - July 4, 1994
Availability: Available from (1) as Paper EN 38270 ORA
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