Fatigue strength improvement of selective laser melted Ti6Al4V using ultrasonic surface mechanical attrition
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
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Detail(s)
Original language | English |
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Pages (from-to) | 327-333 |
Journal / Publication | Materials Research Letters |
Volume | 7 |
Issue number | 8 |
Online published | 23 Apr 2019 |
Publication status | Published - 2019 |
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DOI | DOI |
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Link to Scopus | https://www.scopus.com/record/display.uri?eid=2-s2.0-85086841083&origin=recordpage |
Permanent Link | https://scholars.cityu.edu.hk/en/publications/publication(4707edd4-3cfc-4a6f-9db5-2470043308e3).html |
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 Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
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