In-situ Modification of a High Entropy Alloy with 2.4% Molybdenum Using LPBF, and Its Effect on Microstructure and Corrosion Resistance

dc.creatorRitchie, M.
dc.creatorMehraban, S.
dc.creatorBrown, S.G.R.
dc.creatorButcher, D.
dc.creatorCullen, J.
dc.creatorCalvo-Dahlborg, M.
dc.creatorLavery, N.P.
dc.date.accessioned2023-03-29T16:43:14Z
dc.date.available2023-03-29T16:43:14Z
dc.date.issued2022
dc.description.abstractLaser powder bed fusion (LPBF) components display higher porosity compared to parts made by conventional processes and these pores act as preferential initiation sites for pitting corrosion to occur. In stainless steels such as 316L, molybdenum is 3.5X more effective at enhancing the pitting resistance than chromium, without adding unwanted nitrides to the alloy. In this work, the effect on corrosion resistance is reported for an Al-Cr-Mn-Ni-Fe high entropy alloy (HEA) gas atomised specifically for LPBF, as well as the effects of modifying the alloy by blending the HEA with molybdenum. In-situ LPBF processing, even for low levels of additions has made the comparison difficult, as the pitting resistance is so strongly linked to the porosity, which is higher in the in-situ process. Pitting resistance for both the original HEA and the doped HEA will be compared between samples processed by casting and by LPBF.en_US
dc.description.departmentMechanical Engineeringen_US
dc.identifier.urihttps://hdl.handle.net/2152/117685
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/44564
dc.language.isoengen_US
dc.relation.ispartof2022 International Solid Freeform Fabrication Symposiumen_US
dc.rights.restrictionOpenen_US
dc.subjectHigh Entropy Alloyen_US
dc.subjectLaser Powder Bed Fusionen_US
dc.subjectPitting Corrosionen_US
dc.titleIn-situ Modification of a High Entropy Alloy with 2.4% Molybdenum Using LPBF, and Its Effect on Microstructure and Corrosion Resistanceen_US
dc.typeConference paperen_US
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