Behavior of Austempered Ductile Irons (ADI) Subjected to Laser Surface Melting

D. L. Jones; I. Fagoaga; J. F. Liceaga

doi:10.1117/12.950065

Behavior of Austempered Ductile Irons (ADI) Subjected to Laser Surface Melting

D. L. Jones, I. Fagoaga, J. F. Liceaga

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Abstract

The near surface microstructure of 3 austempered ductile irons has been modified using laser surface melting (LSM). A white cast iron layer was produced to depths of up to 500 microns. The microstructure of this region varied depending upon the parameters used. A heat affected zone (HAZ) appeared at an abrupt transition between the LSM zone and the substrate. The size of the HAZ, which varied between 20 and 200 microns was predominately affected by the pass velocity in the range of energies used. The hardness profiles showed large variations in the Haz probably due to varing tempering effects from the subsequent passes.

Original language	English
Pages (from-to)	196-203
Number of pages	8
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	1020
DOIs	https://doi.org/10.1117/12.950065
Publication status	Published - 24 Mar 1989

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abstract = "The near surface microstructure of 3 austempered ductile irons has been modified using laser surface melting (LSM). A white cast iron layer was produced to depths of up to 500 microns. The microstructure of this region varied depending upon the parameters used. A heat affected zone (HAZ) appeared at an abrupt transition between the LSM zone and the substrate. The size of the HAZ, which varied between 20 and 200 microns was predominately affected by the pass velocity in the range of energies used. The hardness profiles showed large variations in the Haz probably due to varing tempering effects from the subsequent passes.",

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Behavior of Austempered Ductile Irons (ADI) Subjected to Laser Surface Melting

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