A Comparative Study on the Microstructure and Texture Evolution of L-PBF and LP-DED 17-4 PH Stainless Steel during Heat Treatment

Simple item page
dc.creatorNezhadfar, P.D.
dc.creatorGradl, Paul R.
dc.creatorShao, Shuai
dc.creatorShamsaei, Nima
dc.date.accessioned2021-12-06T22:14:51Z
dc.date.available2021-12-06T22:14:51Z
dc.date.issued2021
dc.description.abstractThis study aims to characterize the microstructure and crystallographic texture of 17-4 PH stainless steel (SS) manufactured with laser powder directed energy deposition (LP-DED) and laser powder bed fusion (L-PBF), in both non-heat treated and heat treated conditions. It is found that the non-heat treated LP-DED 17-4 PH SS possesses coarse columnar ferrite grains decorated with Widmanstätten ferrite grains, whereas the L-PBF counterpart has very fine and mostly equiaxed ferrite grains along with lath martensite. An identical stress relief (SR) temperature is obtained for both the L-PBF and LP-DED 17-4 PH SS samples based on the phase diagrams generated using Thermo-Calc. software. The SR step prior to CA-H1025 heat treatment resulted in texture weakening and slightly refined the grain structure. The non-heat treated L-PBF 17-4 PH SS sample possesses strong cube and γ-fiber textures, while the texture transfers to weaker γ-fiber components after performing SR-CA-H1025 heat treatment.en_US
dc.description.departmentMechanical Engineeringen_US
dc.identifier.urihttps://hdl.handle.net/2152/90694
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/17613
dc.language.isoengen_US
dc.publisherUniversity of Texas at Austinen_US
dc.relation.ispartof2021 International Solid Freeform Fabrication Symposiumen_US
dc.rights.restrictionOpenen_US
dc.subjectlaser powder directed energy depositionen_US
dc.subjectLP-DEDen_US
dc.subjectlaser powder bed fusionen_US
dc.subjectL-PBFen_US
dc.subjectstainless steelen_US
dc.subjectmicrostructureen_US
dc.subjecttextureen_US
dc.titleA Comparative Study on the Microstructure and Texture Evolution of L-PBF and LP-DED 17-4 PH Stainless Steel during Heat Treatmenten_US
dc.typeConference paperen_US

Access full-text files

Original bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
2021-075-Nezhadfar.pdf
Size:
2.06 MB
Format:
Adobe Portable Document Format
Description:
Download

License bundle

Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.64 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

2021 International Solid Freeform Fabrication Symposium