TY - JOUR
T1 - Evolution of microstructure in laser clad Fe–Cr–Mn–C alloy
AU - Singh, J.
AU - Mazumder, J.
N1 - Funding Information:
This work was made possible by a grant from Quantum Laser Corporation, Long Island, New York. Dr Mohmoud Eboo is the technical monitor. Thanks are also due to Professor C. M. Wayman for helpful discussions. The studies involving electron microscopy were performed in the Center for Microanalysis of Materials in the Materials Research Laboratory of the University of Illinois at Urbana-Champaign.
PY - 1986/7
Y1 - 1986/7
N2 - The laser surface cladding technique was used to form in situ Fe–Cr–Mn–C alloys on AISI 1016 steel substrate. In this process, mixed powders containing Cr, Mn, and C in the weight ratio 10: 1: 1 were delivered using a screw feed, gravity flow, carrier gas aided system into the melt pool generated by a 10 kW CO2 laser. This technique produced an ultrafine microstructure in the clad alloy layer. The microstructure of the laser surface clad region was investigated by optical, scanning and transmission electron microscopy, and X-ray microanalysis techniques. Microstructural study showed a high degree of grain refinement and an increase in solid solubility of alloying elements which, in turn, produced a fine distribution of complex types of carbide precipitates in the ferrite matrix because of the high cooling rate. An alloy of this composition does not show any martensitic transformation or retained austenite phase.
AB - The laser surface cladding technique was used to form in situ Fe–Cr–Mn–C alloys on AISI 1016 steel substrate. In this process, mixed powders containing Cr, Mn, and C in the weight ratio 10: 1: 1 were delivered using a screw feed, gravity flow, carrier gas aided system into the melt pool generated by a 10 kW CO2 laser. This technique produced an ultrafine microstructure in the clad alloy layer. The microstructure of the laser surface clad region was investigated by optical, scanning and transmission electron microscopy, and X-ray microanalysis techniques. Microstructural study showed a high degree of grain refinement and an increase in solid solubility of alloying elements which, in turn, produced a fine distribution of complex types of carbide precipitates in the ferrite matrix because of the high cooling rate. An alloy of this composition does not show any martensitic transformation or retained austenite phase.
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U2 - 10.1179/mst.1986.2.7.709
DO - 10.1179/mst.1986.2.7.709
M3 - Article
AN - SCOPUS:0022757121
VL - 2
SP - 709
EP - 713
JO - Metal Science J
JF - Metal Science J
SN - 0267-0836
IS - 7
ER -