Microstructural characterisation of metallic shot peened and laser shock peened Ti–6Al–4VReport as inadecuate


Microstructural characterisation of metallic shot peened and laser shock peened Ti–6Al–4V


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Publication Date: 2017-01-15

Journal Title: Acta Materialia

Publisher: Elsevier

Volume: 123

Pages: 350-361

Language: English

Type: Article

This Version: VoR

Metadata: Show full item record

Citation: Lainé, S., Knowles, K. M., Doorbar, P., Cutts, R., & Rugg, D. (2017). Microstructural characterisation of metallic shot peened and laser shock peened Ti–6Al–4V. Acta Materialia, 123 350-361. https://doi.org/10.1016/j.actamat.2016.10.044

Abstract: A detailed analysis has been conducted of Ti–6Al–4V processed by metallic shot peening and laser shock peening. Analysis by incremental hole drilling, electron backscattered diffraction microscopy, transmission electron microscopy and transmission Kikuchi diffraction microscopy is evaluated and discussed. The results of this analysis highlight the very different dislocation structures in surfaces processed by these two techniques. Transmission Kikuchi diffraction also has been used to evaluate sub-grains generated by laser shock peening. A notable feature of material processed by laser shock peening is the almost complete absence of deformation twinning, contrasting with the frequent observation of extensive deformation twinning observed in the material processed by metallic shot peening.

Keywords: residual stress, metallic shot peening (MSP), laser shock peening (LSP), Ti–6Al–4V, Transmission Kikuchi Diffraction (TKD)

Sponsorship: This work was supported by the Rolls-Royce plc/EPSRC strategic partnership under EP/H022309/1.

Embargo Lift Date: 2100-01-01

Identifiers:

External DOI: https://doi.org/10.1016/j.actamat.2016.10.044

This record's URL: https://www.repository.cam.ac.uk/handle/1810/261791



Rights: Attribution 4.0 International

Licence URL: http://creativecommons.org/licenses/by/4.0/





Author: Lainé, SJKnowles, Kevin MaxwellDoorbar, PJCutts, RDRugg, D

Source: https://www.repository.cam.ac.uk/handle/1810/261791



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