QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY
Print ISSN : 0288-4771
TIG and Laser Cladding of Stellite 6 Alloy on 12%Cr Steel Plate
Guojian XUMunaharu KUTSUNAKatsusige YAMADA
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2005 Volume 23 Issue 2 Pages 286-295

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Abstract

In order to repair and improve the performance of machinery parts of a power plant, pulsed Nd: YAG laser, CO2 laser, diode laser and TIG cladding were carried out for deposition of Stellite 6 alloy on the surface of 12%Cr martensitic stainless steel plate (t=12mm). These clad layers were characterized by investigating cross sectional geometry, microstructural features and DAS (Dendrite Arm Spacing) values, dilution, macro- and micro-distribution of alloying elements, primary and eutectic phases, hardness distribution and wear resistance by microscope, SEM, EDS, EPMA, X-ray diffractometer, Vickers hardness tester and Oogoshi wear resistance tester.
The small dilution ratios, fine microstructures, narrow widths of heat-affected zones, high Vickers hardness, excellent wear-resistance, high contents of Co and low contents of Fe in the clad layers were obtained by laser cladding in comparison with TIG process.

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© 2005 by JAPAN WELDING SOCIETY
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