Laser surface hardening of gray cast irons
DOI:
https://doi.org/10.3989/revmetalm.1998.v34.i2.674Keywords:
Laser hardening, Gray cast irons, Surface treatment, Microstructural modification, Surface hardnessAbstract
Three different ferritic-pearlitic gray cast irons have been laser hardened. The influence of laser power density and scanning speed on their microstructural modification, affected depth and surface hardness have been evaluated. It was observed that when the laser energy density surpasses a certain critical value, a surface layer melts and a ledeburitic microstructure of very high hardness is obtained. Below it, a second layer of martensitic microstructure also of high hardness, is produced.
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Published
1998-04-30
How to Cite
Maco, A. L., & Belzunce, F. J. (1998). Laser surface hardening of gray cast irons. Revista De Metalurgia, 34(2), 126–130. https://doi.org/10.3989/revmetalm.1998.v34.i2.674
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