Detail publikace

High Cycle Fatigue Study of Plasma and Cold Sprayed Ti Layers on Ti6Al4V Substrates

Originální název

High Cycle Fatigue Study of Plasma and Cold Sprayed Ti Layers on Ti6Al4V Substrates

Anglický název

High Cycle Fatigue Study of Plasma and Cold Sprayed Ti Layers on Ti6Al4V Substrates

Jazyk

en

Originální abstrakt

The influence of thermal spray technologies on the high-cycle fatigue properties of specimens was studied. Ti powder was deposited onto grit blasted Ti6Al4V substrates using plasma and cold spray technologies. Non-treated specimens (reference set), grit blasted and coated specimens were subjected to fatigue cantilever-beam cyclical bend loading with a constant deflection of the free end. It was found that the grit blasting procedure significantly altered the resistance of the Ti6Al4V material to a micro-crack initiation and propagation: as compared to the reference set (fatigue life of 462 949 cycles), the grit blasting procedure increased the fatigue life by 81%. Plasma spray deposition of Ti layers induced a drop in the average fatigue life to 65% of the grit-blasted set lives and the cold sprayed specimens exhibited the lowest average fatigue lives among the samples, 421 772 cycles, representing only 91% of the reference set lives. Delamination of deposited coatings led to a recovery of fatigue life values to values comparable with the grit blasted set (relative fatigue life of Rf = 1.80).

Anglický abstrakt

The influence of thermal spray technologies on the high-cycle fatigue properties of specimens was studied. Ti powder was deposited onto grit blasted Ti6Al4V substrates using plasma and cold spray technologies. Non-treated specimens (reference set), grit blasted and coated specimens were subjected to fatigue cantilever-beam cyclical bend loading with a constant deflection of the free end. It was found that the grit blasting procedure significantly altered the resistance of the Ti6Al4V material to a micro-crack initiation and propagation: as compared to the reference set (fatigue life of 462 949 cycles), the grit blasting procedure increased the fatigue life by 81%. Plasma spray deposition of Ti layers induced a drop in the average fatigue life to 65% of the grit-blasted set lives and the cold sprayed specimens exhibited the lowest average fatigue lives among the samples, 421 772 cycles, representing only 91% of the reference set lives. Delamination of deposited coatings led to a recovery of fatigue life values to values comparable with the grit blasted set (relative fatigue life of Rf = 1.80).

BibTex


@misc{BUT90481,
  author="Jan {Čížek} and Ivo {Dlouhý} and Ondřej {Kovářík} and Jan {Siegl} and Khiam Aik {Khor}",
  title="High Cycle Fatigue Study of Plasma and Cold Sprayed Ti Layers on Ti6Al4V Substrates",
  annote="The influence of thermal spray technologies on the high-cycle fatigue properties of specimens was studied. Ti powder was deposited onto grit blasted Ti6Al4V substrates using plasma and cold spray technologies. Non-treated specimens (reference set), grit blasted and coated specimens were subjected to fatigue cantilever-beam cyclical bend loading with a constant deflection of the free end.

It was found that the grit blasting procedure significantly altered the resistance of the Ti6Al4V material to a micro-crack initiation and propagation: as compared to the reference set (fatigue life of 462 949 cycles), the grit blasting procedure increased the fatigue life by 81%. Plasma spray deposition of Ti layers induced a drop in the average fatigue life to 65% of the grit-blasted set lives and the cold sprayed specimens exhibited the lowest average fatigue lives among the samples, 421 772 cycles, representing only 91% of the reference set lives. Delamination of deposited coatings led to a recovery of fatigue life values to values comparable with the grit blasted set (relative fatigue life of Rf = 1.80).",
  booktitle="Thermal Spray 2011: Proceedings of the International Thermal Spray Conference (ASM International)",
  chapter="90481",
  year="2011",
  month="september",
  type="abstract"
}