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Volume 25 Issue 12
Dec.  2018
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文章导航 >  矿物冶金与材料学报（英文）  > 2018  >  25(12): 1389-1401
José Luis Cabezas-Villa, José Lemus-Ruiz, Didier Bouvard, Omar Jiménez, Héctor Javier Vergara-Hernández, and Luis Olmos, Sintering study of Ti6Al4V powders with different particle sizes and their mechanical properties, Int. J. Miner. Metall. Mater., 25(2018), No. 12, pp. 1389-1401. https://doi.org/10.1007/s12613-018-1693-5
Cite this article as:
José Luis Cabezas-Villa, José Lemus-Ruiz, Didier Bouvard, Omar Jiménez, Héctor Javier Vergara-Hernández, and Luis Olmos, Sintering study of Ti6Al4V powders with different particle sizes and their mechanical properties, Int. J. Miner. Metall. Mater., 25(2018), No. 12, pp. 1389-1401. https://doi.org/10.1007/s12613-018-1693-5
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Sintering study of Ti6Al4V powders with different particle sizes and their mechanical properties

  • University Michoacana of San Nicolás of Hidalgo, ⅡMM, Morelia 58060, México

  • University Grenoble Alpes, CNRS, SIMaP, Grenoble 38000, France

  • University of Guadalajara, Departamento de Ingeniería de Proyectos, Zapopan 45100, México

  • National Technological Institute of Mexico, I. T. Morelia, Morelia 58120, México

  • University Michoacana of San Nicolás of Hidalgo, INICIT, Morelia 58060, México

  • 通讯作者:

    Luis Olmos    E-mail: luisra24@gmail.com

  • 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℃. 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.
    • Research Article

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

    + Author Affiliations
      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℃. 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.
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