Electrically Assisted Ultrasonic Nanocrystal Surface Modification of Ti6Al4V Alloy

Jun Liu, Sergey Suslov, Shengxi Li, Haifeng Qin, Zhencheng Ren, Gary L. Doll, Hongbo Cong, Yalin Dong, Chang Ye

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In this study, an innovative process, electrically assisted ultrasonic nanocrystal surface modification (EA-UNSM), is used to process Ti6Al4V alloy. As compared with traditional UNSM, EA-UNSM results in lower dislocation density and larger grains due to the thermal annealing effect caused by resistive heating. In addition, deeper plastic deformation layer is observed in the electrically assisted case. By supplying mechanical energy and thermal energy simultaneously, a strong dynamic precipitation effect is induced, which generates nanoscale precipitates in the EA-UNSM-treated Ti6Al4V alloy. These nanoscale precipitates can effectively pin dislocations during plastic deformation and thus significantly improve the surface hardness.

Original languageEnglish
Article number1700470
JournalAdvanced Engineering Materials
Volume20
Issue number1
DOIs
Publication statusPublished - 1 Jan 2018

Fingerprint

Nanocrystals
Surface treatment
nanocrystals
ultrasonics
Ultrasonics
Precipitates
Plastic deformation
plastic deformation
precipitates
Thermal energy
Dislocations (crystals)
supplying
Hardness
thermal energy
Annealing
Heating
hardness
annealing
heating
titanium alloy (TiAl6V4)

Keywords

  • dynamic precipitation
  • electrically assisted deformation
  • nanocrystalline
  • severe plastic deformation
  • Ultrasonic nanocrystal surface modification

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Electrically Assisted Ultrasonic Nanocrystal Surface Modification of Ti6Al4V Alloy. / Liu, Jun; Suslov, Sergey; Li, Shengxi; Qin, Haifeng; Ren, Zhencheng; Doll, Gary L.; Cong, Hongbo; Dong, Yalin; Ye, Chang.

In: Advanced Engineering Materials, Vol. 20, No. 1, 1700470, 01.01.2018.

Research output: Contribution to journalArticle

Liu, Jun ; Suslov, Sergey ; Li, Shengxi ; Qin, Haifeng ; Ren, Zhencheng ; Doll, Gary L. ; Cong, Hongbo ; Dong, Yalin ; Ye, Chang. / Electrically Assisted Ultrasonic Nanocrystal Surface Modification of Ti6Al4V Alloy. In: Advanced Engineering Materials. 2018 ; Vol. 20, No. 1.
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