15 August 1998 Laser surface hardening for tooling high-speed steel
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Abstract
Annealed high speed steels for making tools such as W6Mo5Cr4V2, W9Mo3Cr4V1, W18Cr4V were treated with 5 kw continuous adjusting CO2 laser. By controlling laser- processing parameters, we achieved variable datum about the depth and hardness of the surface hardening layer of the samples. The relationship between the depth of hardening layer and laser processing parameters were studied with microhardness meter, scanning electronic microscope. The results showed that the sample's micro organization was markedly fined, dislocation and twin crystal subconstruction was strikingly increased, its hardness was obviously higher than that of general heat treatment.
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Weina Liu, Weina Liu, Fengming Bai, Fengming Bai, Dongyun Zhang, Dongyun Zhang, Ling Chen, Ling Chen, Jingyi Wang, Jingyi Wang, Yang Xia, Yang Xia, } "Laser surface hardening for tooling high-speed steel", Proc. SPIE 3550, Laser Processing of Materials and Industrial Applications II, (15 August 1998); doi: 10.1117/12.317895; https://doi.org/10.1117/12.317895
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