Modification of AISI M2 high speed tool steels after laser surface melting under different operation conditions

Authors

  • J. Arias Centro Tecnológico (AIMEN)
  • M. Cabeza Departamento de Ingeniería de los Materiales, Mecánica Aplicada y Construcción. E.T.S.I. Industriales. Universidad de Vigo
  • G. Castro Centro Tecnológico (AIMEN)
  • I. Feijoo Departamento de Ingeniería de los Materiales, Mecánica Aplicada y Construcción. E.T.S.I. Industriales. Universidad de Vigo
  • P. Merino Departamento de Ingeniería de los Materiales, Mecánica Aplicada y Construcción. E.T.S.I. Industriales. Universidad de Vigo
  • G. Pena Departamento de Ingeniería de los Materiales, Mecánica Aplicada y Construcción. E.T.S.I. Industriales. Universidad de Vigo

DOI:

https://doi.org/10.3989/revmetalm.0918

Keywords:

AISI M2 high speed steel, Nd, YAG laser, Laser melting, Hardness, Wear

Abstract


We applied a laser surface melting treatment to AISIM2 high-speed steel –hardened and tempered- and studied the resulting surface characteristics (microstructure) and mechanical behavior (hardness and wear performance). The steel was treated using a Nd:YAG continuous-wave laser with different operation conditions. The influence of the laser processing parameters on the single tracks and on melted surface layer obtained by multipass system with 50% overlap were studied. The microstructure for all conditions is formed byMC- and M2C-type carbides, martensite and retained austenite; the quantities of this phase depends on the operations conditions. It has been determined that low levels of power density and high speed scanning of the beam leads to greater homogeneity in the microstructure with high hardness values and wear resistance.

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Published

2010-06-30

How to Cite

Arias, J., Cabeza, M., Castro, G., Feijoo, I., Merino, P., & Pena, G. (2010). Modification of AISI M2 high speed tool steels after laser surface melting under different operation conditions. Revista De Metalurgia, 46(3), 206–218. https://doi.org/10.3989/revmetalm.0918

Issue

Vol. 46 No. 3 (2010)

Section

Articles

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