Fatigue strength improvement of selective laser melted Ti6Al4V using ultrasonic surface mechanical attrition

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Xingchen Yan
  • Shuo Yin
  • Chaoyue Chen
  • Richard Jenkins
  • Rocco Lupoi
  • Rodolphe Bolot
  • Wenyou Ma
  • Min Kuang
  • Hanlin Liao
  • Min Liu

Detail(s)

Original languageEnglish
Pages (from-to)327-333
Journal / PublicationMaterials Research Letters
Volume7
Issue number8
Online published23 Apr 2019
Publication statusPublished - 2019

Link(s)

Abstract

Ultrasonic surface mechanical attrition treatment (SMAT) was employed to modify the surface microstructural layer of SLM Ti6Al4V ELI biomedical material to improve the fatigue performance. The SMAT method can introduce a nanostructured layer in the SLM sample surface by imposing high-strain-rate plastic deformation. The nanostructured layer improves the mechanical strength of the SMAT-affected zone and induces compressive residual stress parallel with the surface which suppress the initiation of cracks. As a result, the specimen after SMAT exhibits significantly higher fatigue strength than the non-treated sample in both low- and high-cycling regime.

Research Area(s)

  • Selective laser melting (SLM), additive manufacturing, nanocrystalline, fatigue resistance, TEM characterisation, TI-6AL-4V, TRANSFORMATION, PERFORMANCE, BEHAVIOR, COPPER

Citation Format(s)

Fatigue strength improvement of selective laser melted Ti6Al4V using ultrasonic surface mechanical attrition. / Yan, Xingchen; Yin, Shuo; Chen, Chaoyue et al.
In: Materials Research Letters, Vol. 7, No. 8, 2019, p. 327-333.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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