Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/100845
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dc.contributor.authorSantos, R.F.-
dc.contributor.authorFarinha, A. R.-
dc.contributor.authorRocha, R.-
dc.contributor.authorBatista, C.-
dc.contributor.authorCosta Rodrigues, G.-
dc.contributor.authorVieira, M. T.-
dc.date.accessioned2022-07-14T10:34:56Z-
dc.date.available2022-07-14T10:34:56Z-
dc.date.issued2021-
dc.identifier.issn2590048Xpt
dc.identifier.urihttp://hdl.handle.net/10316/100845-
dc.description.abstractSustainable recycling approaches are emerging topics for environmental safety of manufacturing technologies. Chips generated in high–speed machining (HSM) of as-quenched steels have a potential re-use for more sustainable and cost-efficient manufacturing routes, such as powder production from chip milling for additive manufacturing (AM). The objective of this study was to characterise tool-steel chips generated by HSM of an AISISAE H13 as-quenched workpiece and evaluate their potential use for powder production, as an alternative process to atomisation. Microhardness tests reveal that this type of waste has a suitable hardness for milling, which could be attributed to its microstructure. Chips were also analysed by X-ray diffraction, scanning and transmission electron microscopies, and transmission electron backscattering diffraction (t-EBSD) mapping. The microstructure of the areas adjacent to the adiabatic shear band (ASB), where intense material flow takes place, consists of thin martensite laths with high dislocation density and low angle grain boundaries (LAGB) or subgrain regions. ASB consists of ultrafine and nanocrystalline grains. The results provide new insight on the grain-refining mechanism assisted by progressive martensite lath subdivision into small and near-equiaxed grains, as a direct result of intense strain accumulation and recrystallisation, endorsing HSM tool-steel chips as superior (nanocrystalline) and low-cost raw material for powder production.pt
dc.language.isoengpt
dc.relationAdd.Additive – AddAdditive Manufacturing to Portuguese Industry grant number POCI–01- 0247-FEDER-024533),pt
dc.relationAdd.Powder (grant number 39910)pt
dc.relationFCT grant number UIDB/00285/2020pt
dc.relationFCT grant number UIDB/04044/2020)pt
dc.relationCentro 20 - PAMI–ROTEIRO/0328/2013 (no. 022158)pt
dc.relationproject QREN MaisCentro MT4MOBI – Materials and Technologies for Greener Manufacturing & Products Applied to Mobilitypt
dc.rightsopenAccesspt
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt
dc.subjectAdditive manufacturingpt
dc.subjectGrain-refinementpt
dc.subjectNanocrystallinept
dc.subjectt-EBSDpt
dc.subjectTool-steel chippt
dc.titleHigh-speed machining tool-steel chips as an outstanding raw material for indirect additive manufacturing?pt
dc.typearticle-
degois.publication.firstPage100207pt
degois.publication.titleResults in Materialspt
dc.peerreviewedyespt
dc.identifier.doi10.1016/j.rinma.2021.100207pt
degois.publication.volume11pt
dc.date.embargo2021-01-01*
uc.date.periodoEmbargo0pt
item.grantfulltextopen-
item.fulltextCom Texto completo-
item.languageiso639-1en-
crisitem.author.researchunitCEMMPRE - Centre for Mechanical Engineering, Materials and Processes-
crisitem.author.orcid0000-0002-5958-3533-
Appears in Collections:I&D CEMMPRE - Artigos em Revistas Internacionais
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