Laser Surface Hardening of Graphite Cast Iron

Jakub Horník; Jan Krčil; Vladimír Mára; Antonín Mores

doi:10.4028/p-88fy2h

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HomeSolid State PhenomenaSolid State Phenomena Vol. 334Laser Surface Hardening of Graphite Cast Iron

Laser Surface Hardening of Graphite Cast Iron

Abstract:

Two types of graphite cast iron are evaluated. The effect of laser surface hardening is compared using metallographic analysis of the microstructure and measurement of hardness profile. Conditions of the hardening were the same for both analyzed materials. The alloys that were compared are: cast iron with lamellar graphite EN GJL-200 and cast iron with nodular graphite EN GJS-700 CuNi. Microstructure of tested cast irons was pearlitic-ferritic. Laser surface heat treatment caused formation of martensitic layer. The depth and structural compositions of hardened layers do differ. In the case of gray cast iron the higher hardened depth was achieved and in the case of ductile cast iron the higher hardness was observed.

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Periodical:

Solid State Phenomena (Volume 334)

Pages:

94-99

DOI:

https://doi.org/10.4028/p-88fy2h

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Online since:

July 2022

Authors:

Jakub Horník*, Jan Krčil, Vladimír Mára, Antonín Mores

Keywords:

Graphite Cast Iron, Hardness, Laser, Microstructure, Surface Hardening

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