Hardness,wear and microstructure of carbon implanted AISI M2 high speed steel |
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| Affiliation: | 1. Universidad Politécnica del Valle de México UPVM, Grupo Ciencia e Ingeniería de Materiales Av. Mexiquense S/N esquina Av universidad politécnica, Col villa esmeralda, 54910 Tultitlan, Estado de México, Mexico;2. Instituto Politécnico Nacional, SEPI-ESIME IPN, Av. Luis Enrique Erro S/N, Unidad Profesional Adolfo López Mateos, Gustavo A. Madero, Zacatenco, 07738 Ciudad de México, Mexico;3. Univerisdad Autónoma Metropolitana Unidad Azcapotzalco, Área de Ciencia de los Materiales, Av. San Pablo 180 Azcapotzalco, 02200 Ciudad de México, Mexico |
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| Abstract: | The hardness, wear behaviour and microstructure of AISI M2 high speed steel implanted with carbon ions are discussed. The samples were implanted at an energy of 100 keV. The doses ranged from 1×1017 C+/cm2 to 3×1018 C+/cm2. Hardness increases due to ion implantation, but no significant dose dependence is found. For lower doses the wear effects mainly the pin, but from doses of 5×1017 C+/cm2 onwards a pronounced ploughing of the disk is observed. The abrasive wear rate decreases with increasing dose. Microstructural investigations reveal the presence of ε-carbide and graphitic carbon in the implanted volume. A possible correlation between hardness and wear is discussed based on the microstructural results. |
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