Metals and Materials International

, Volume 23, Issue 6, pp 1063–1074 | Cite as

Stability of Y-Ti-O nanoparticles during laser deposition of oxide dispersion strengthened steel powder

  • Kwangjun Euh
  • Barton Arkhurst
  • Il Hyun Kim
  • Hyun-Gil Kim
  • Jeoung Han Kim
Research Paper


This study investigated the feasibility of a direct energy deposition process for fabrication of oxide dispersion strengthened steel cladding. The effect of the laser working power and scan speed on the microstructural stability of oxide nanoparticles in the deposition layer was examined. Y-Ti-O type oxide nanoparticles with a mean diameter of 45 nm were successfully dispersed by the laser deposition process. The laser working power significantly affected nanoparticle size and number density. A high laser power with a low scan speed seriously induced particle coarsening and agglomeration. Compared with bulk oxide dispersion strengthened steel, the hardness of the laser deposition layer was much lower because of a relatively coarse particle and grain size. Formation mechanism of nanoparticles during laser deposition was discussed.


alloys oxide dispersion strengthened steel powder processing microstructure scanning/transmission electron microscopy 


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Copyright information

© The Korean Institute of Metals and Materials and Springer Science+Business Media B.V. 2017

Authors and Affiliations

  • Kwangjun Euh
    • 1
    • 4
  • Barton Arkhurst
    • 2
  • Il Hyun Kim
    • 3
  • Hyun-Gil Kim
    • 3
  • Jeoung Han Kim
    • 2
  1. 1.Light Metals DepartmentKorea Institute of Materials ScienceChangwonRepublic of Korea
  2. 2.Department of Materials Science & EngineeringHanbat National UniversityDaejeonRepublic of Korea
  3. 3.LWR Fuel Technology DivisionKorea Atomic Energy Research InstituteDaejeonRepublic of Korea
  4. 4.Advanced materials engineeringKorea University of Science and Technology (UST)DaejeonRepublic of Korea

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