@article{01HKQ8AK7C4P7155GG8C7VMC9G,
  abstract     = {{Despite the increasing developments in laser powder bed fusion (L-PBF) of titanium, no relationships have been established yet on the hydride formation in the L-PBF titanium alloy Ti-6Al-4V. Nevertheless, insights in the development of titanium hydrides in this particular microstructure are e.g. useful for thermohydrogen processing and to avoid premature failure. Therefore, this work investigated the formation of titanium hydrides in as-built and heat treated L-PBF Ti-6Al-4V. Hydrogen was introduced via electrochemical hydrogen charging until hydrides precipitated. The evolution of titanium hydride formation was observed to be closely related to the microstructure, being associated to the hydrogen solubility and diffusivity in the different crystallographic phases. Investigation by scanning electron microscopy (SEM) and X-ray diffraction (XRD) demonstrated that parallelisms could be drawn to the hydride development in conventionally manufactured pure alpha and alpha-beta titanium alloys, for as-built and heat treated L-PBF Ti-6Al-4V, respectively. Phase and texture analysis were performed with electron backscatter diffraction (EBSD) to identify the orientation relationships between the original microstructural phases and the formed delta hydrides. It was observed in heat treated L-PBF Ti-6Al-4V that intragranular delta hydrides inside the alpha grains precipitated according to the {0001}alpha // {111}delta orientation relationship. On the other hand, hydrides at grain boundaries developed rather according to the {0001}alpha // {001}delta orientation relationship. Furthermore, nuances in hydrogen interaction are highlighted with respect to the conventionally manufactured counterparts.}},
  articleno    = {{172859}},
  author       = {{Deconinck, Liesbet and Depover, Tom and Verbeken, Kim}},
  issn         = {{0925-8388}},
  journal      = {{JOURNAL OF ALLOYS AND COMPOUNDS}},
  keywords     = {{Materials Chemistry,Metals and Alloys,Mechanical Engineering,Mechanics of Materials,Ti-6Al-4V,Laser powder bed fusion,Hydrides,Hydrogen embrittlement,Hydrogen induced phase transformation,BEAM MELTING EBM,MECHANICAL-PROPERTIES,ORIENTATION RELATIONSHIPS,HYDROGEN EMBRITTLEMENT,TITANIUM HYDRIDES,PHASE,MICROSTRUCTURE,PRECIPITATION,ALLOYS,PARAMETERS}},
  language     = {{eng}},
  pages        = {{10}},
  title        = {{Characterisation of hydride formation in as-built and heat treated laser powder bed fused Ti-6Al-4V}},
  url          = {{http://doi.org/10.1016/j.jallcom.2023.172859}},
  volume       = {{972}},
  year         = {{2024}},
}

Altmetric

View in Altmetric

Web of Science

Times cited: