• Blistering in alloy Ti–6Al–4V from H+ ion implantation

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    • Keywords


      H+ ion implantation; blisters; surface modification; Ti–6Al–4V alloy.

    • Abstract


      The effect of H+ ion implantation on surface morphology of the titanium alloy, Ti–6Al–4V, was studied, following H+ ion implantation of 150 keV and 250 keV energy to fluence of 2.6 × 1018 cm-2 and 2.5 × 1019 cm-2, respectively at ambient temperature. No detectable change was observed in surface features of either of the above specimen immediately after the implantation. However, vein like features (VLF) were observed to appear on the surface of the sample, implanted at 150 keV to a fluence of 2.6 × 1018 cm-2, following natural ageing at room temperature for 150 days. Subsequent annealing of the above naturally aged sample, at 423 K for 150 min under vacuum (10-3 torr), led to development of a macroblister.

      In sharp contrast in the other sample, implanted by H+ ions of higher energy (250 keV) to higher fluence of 2.5 × 1019 cm-2, neither there was any effect of natural ageing following the implantation nor that of subsequent annealing at 423 K and ageing on its surface morphology.

    • Author Affiliations


      B K Singh1 V Singh2

      1. Department of Physics, Purvanchal University, Jaunpur 222 001, India
      2. Centre of Advanced Study, Department of Metallurgical Engineering, Institute of Technology, Banaras Hindu University, Varanasi 221 005, India
    • Dates

  • Bulletin of Materials Science | News

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