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Sintering study of Ti6Al4V powders with different particle sizes and their mechanical properties

  • José Luis Cabezas-Villa
  • José Lemus-Ruiz
  • Didier Bouvard
  • Omar Jiménez
  • Héctor Javier Vergara-Hernández
  • Luis Olmos
Article
  • 29 Downloads

Abstract

Ti6Al4V powders with three different particle size distributions (0–20, 20–45, and 45–75 μm) were used to evaluate the effect of the particle size distribution on the solid-state sintering and their mechanical properties. The sintering kinetics was determined by dilatometry at temperatures from 900 to 1260°C. The mechanical properties of the sintered samples were evaluated by microhardness and compression tests. The sintering kinetics indicated that the predominant mechanism depends on the relative density irrespective of the particle size used. The mechanical properties of the sintered samples are adversely affected by increasing pore volume fraction. The elastic Young’s modulus and yield stress follow a power law function of the relative density. The fracture behavior after compression is linked to the neck size developed during sintering, exhibiting two different mechanisms of failure: interparticle neck breaking and intergranular cracking in samples with relative densities below and above of 90%, respectively. The main conclusion is that relative density is responsible for the kinetics, mechanical properties, and failure behavior of Ti6Al4V powders.

Keywords

Ti6Al4V powders dilatometry microhardness sintering kinetics compression failure behavior 

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Notes

Acknowledgements

The authors would like to thank to Coordination of Scientific Research of the University Michoacana of San Nicolás of Hidalgo (UMSNH), the National Laboratory SEDEAM-National Council for Science and Technology (CONACYT) and ECOS M15P01 for the financial support and the facilities to develop this study.

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Copyright information

© University of Science and Technology Beijing and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • José Luis Cabezas-Villa
    • 1
  • José Lemus-Ruiz
    • 1
  • Didier Bouvard
    • 2
  • Omar Jiménez
    • 3
  • Héctor Javier Vergara-Hernández
    • 4
  • Luis Olmos
    • 5
  1. 1.University Michoacana of San Nicolás of Hidalgo, IIMMMoreliaMéxico
  2. 2.University Grenoble Alpes, CNRS, SIMaPGrenobleFrance
  3. 3.University of Guadalajara, Departamento de Ingeniería de ProyectosZapopanMéxico
  4. 4.National Technological Institute of Mexico, I. T. MoreliaMoreliaMéxico
  5. 5.University Michoacana of San Nicolás of Hidalgo, INICITMoreliaMéxico

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