Laser Surface Alloying of Some Steels from SiC Predeposited Powders
Journal Title: Analele Universitatii "Dunarea de Jos" din Galati. Fascicula IX, Metalurgie si Stiinta Materialelor - Year 2008, Vol 31, Issue 2
Abstract
For the purpose of studying the possibilities of increasing the wear resistance, specimens of three steels with 0.2%C, 0.46%C and 1%C were surface alloyed with reinforcement from overlapping pastes with green SiC hard particles with the granulation 800 and 320. The melting of surface layer was performed by CO2 continous wave laser on a numerical x-y table. On these specimens the micro structural characteristics, geometry of molten zone, micro hardness variation in the alloyed layer depth and the HV5 hardness on a laser processed surface were determined, which allowed defining the added material with the best hardening effect. The conditions to obtain compact surface layers with 2-3 time higher hardness than the base material were determined.
Authors and Affiliations
S. M. LEVCOVICI, D. T. LEVCOVICI
Keywords
Related Articles
- EP ID EP659452
- DOI -
- Views 66
- Downloads 0
Influence on Reduction Scheme Hardness Cold Rolled Strip Mark Steel ST 12
The paper presents the results of the research on the influence of the evolution hardness scheme rolled steel, for the cold-rolled strip steel St 12. St 12 is intended for the manufacture of cold rolled strip stamping pr...
Study on the Influence of the Chemical Composition in the Thermomechanical Processing of the Steel Products
This paper presents the results of industrial scale researches on the influence of the chemical composition on the characteristics of high yield point plates of wieldable fine grain steels. The comparative study of the m...
New Achievements in Manufacturing of Church Bells
Analysis, modelling and design of the bells are a topical issue for manufacturers of bells, in general, and for church bells manufacturers in particular. The transition from manual design of a bell to that achieved with...
Pollutant Emissions, Control and Prevention in the Secondary Copper Industry
This paper presents an analysis of pollutant emissions specifics to copper waste valorization. There are made appreciations of the role and importance which have the characteristics of mixed charge with waste having a va...
A Typical Surface Formations Found on the Corrosion Layer of Iron Artefacts
The paper presents the experimental results obtained by applying non-invasive methods (OM, SEM-EDX, XRF) on two iron artefacts from the IInd and the IIIrd centuries A.D. (discovered in the incineration graves from Gabăra...