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- Adegoke, Olutayo,1979-Högskolan Väst,Avdelningen för avverkande och additativa tillverkningsprocesser (AAT),PTW,Univ West, Sweden (author)
Influence of laser powder bed fusion process parameters on the microstructure of solution heat-treated nickel-based superalloy Alloy 247LC
- Article/chapterEnglish2022
Publisher, publication year, extent ...
- Elsevier,2022
- electronicrdacarrier
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- LIBRIS-ID:oai:DiVA.org:hv-17873
- https://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-17873URI
- https://doi.org/10.1016/j.matchar.2021.111612DOI
- https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-181902URI
Supplementary language notes
- Language:English
- Summary in:English
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Notes
- Funding Agencies|KK foundation, Sweden [2016-0281]
- In this study, Alloy 247LC samples were built with different laser powder bed fusion (L-PBF) process parameters. The samples were then subjected to solution heat treatment at 1260 °C for 2 h. The grain size of all the samples increased significantly after the heat treatment. The relationship between the process parameters and grain size of the samples was investigated by performing a design of experiment analysis. The results indicated that the laser power was the most significant process parameter that influenced the grain height and aspect ratio. The laser power also significantly influenced the grain width. The as-built and as-built + heat-treated samples with high, medium, and low energy densities were characterized using a field emission gun scanning electron microscope equipped with an electron backscatter diffraction detector. The micrographs revealed that the cells present in the as-built samples disappeared after the heat treatment. Isolated cases of twinning were observed in the grains of the as-built + heat-treated samples. The disappearance of cells, increase in the grain size, and appearance of twins suggested that recrystallization occurred in the alloy after the heat treatment. The occurrence of recrystallization was confirmed by analyzing the grain orientation spread of the alloy, which was lower and more predominantly <1° in the as-built + heat-treated conditions than in the as-built conditions. The microhardness of the as-built + heat-treated samples were high which was plausible because γ’ precipitates were observed in the samples. However, the L-PBF process parameters had a very low correlation with the microhardness of the as-built + heat-treated samples.
Subject headings and genre
- TEKNIK OCH TEKNOLOGIER Materialteknik Bearbetnings-, yt- och fogningsteknik hsv//swe
- ENGINEERING AND TECHNOLOGY Materials Engineering Manufacturing, Surface and Joining Technology hsv//eng
- TEKNIK OCH TEKNOLOGIER Materialteknik Metallurgi och metalliska material hsv//swe
- ENGINEERING AND TECHNOLOGY Materials Engineering Metallurgy and Metallic Materials hsv//eng
- Mechanical Engineering
- Mechanics of Materials
- Condensed Matter Physics
- General Materials Science
- Production Technology
- Produktionsteknik
Added entries (persons, corporate bodies, meetings, titles ...)
- Polisetti, Satyanarayana Rao,1996-Högskolan Väst,Avdelningen för avverkande och additativa tillverkningsprocesser (AAT),Univ West, Sweden(Swepub:hv)sapo0006 (author)
- Xu, JinghaoLinköpings universitet,Konstruktionsmaterial,Tekniska fakulteten(Swepub:liu)jinxu03 (author)
- Andersson, Joel,1981-Högskolan Väst,Avdelningen för svetsteknologi (SV),Univ West, Sweden(Swepub:hv)joan0056 (author)
- Brodin, HåkanSiemens Industrial Turbomachinery, Finspång,Siemens Ind Turbomachinery, Sweden (author)
- Pederson, Robert,1973-Högskolan Väst,Avdelningen för avverkande och additativa tillverkningsprocesser (AAT),PTW,Univ West, Sweden(Swepub:hv)robped (author)
- Harlin, Peter,1974-Högskolan Väst,Avdelningen för avverkande och additativa tillverkningsprocesser (AAT),Sandvik Additive Manufacturing, Sandviken,Univ West, Sweden; Sandvik Addit Mfg, Sweden(Swepub:hv)pethar (author)
- Högskolan VästAvdelningen för avverkande och additativa tillverkningsprocesser (AAT) (creator_code:org_t)
Related titles
- In:Materials Characterization: Elsevier1831044-58031873-4189
Internet link
- https://doi.org/10.1016/j.matchar.2021.111612Fulltext
- https://hv.diva-portal.org/smash/get/diva2:1615517/FULLTEXT01.pdffulltext:print
- https://doi.org/10.1016/j.matchar.2021.111612
- https://liu.diva-portal.org/smash/get/diva2:1622061/FULLTEXT01.pdffulltext:print
- https://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-17873
- https://doi.org/10.1016/j.matchar.2021.111612
- https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-181902
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