Search: onr:"swepub:oai:DiVA.org:ltu-68924" > Defect characteriza...
Fältnamn | Indikatorer | Metadata |
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000 | 05053naa a2200589 4500 | |
001 | oai:DiVA.org:ltu-68924 | |
003 | SwePub | |
008 | 180528s2018 | |||||||||||000 ||eng| | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-689242 URI |
024 | 7 | a https://doi.org/10.15406/aaoaj.2018.02.000442 DOI |
040 | a (SwePub)ltu | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Neikter, Magnus,d 1988-u Luleå tekniska universitet,Materialvetenskap4 aut0 (Swepub:ltu)magnei |
245 | 1 0 | a Defect characterization of electron beam melted Ti-6Al-4V and Alloy 718 with X-ray microtomography |
264 | c 2018-05-18 | |
264 | 1 | b MedCrave Group,c 2018 |
338 | a electronic2 rdacarrier | |
520 | a Electron beam melting (EBM) is emerging as a promising manufacturing process where metallic components are manufactured from three-dimensional (3D) computer aided design models by melting layers onto layers. There are several advantages with this manufacturing process such as near net shaping, reduced lead times and the possibility to decrease weight by topology optimization, aspects that are of interest for the aerospace industry. In this work two alloys, Ti-6Al-4V and Alloy 718, widely used within the aerospace industry were investigated with X-ray microtomography (XMT), to characterize defects such as lack of fusion (LOF) and inclusions. It was furthermore possible to view the macrostructure with XMT, which was compared to macrostructure images obtained by light optical microscopy (LOM). XMT proved to be a useful tool for defect characterization and both LOF and un-melted powder could be found in the two investigated samples. In the EBM built Ti-6Al-4V sample high density inclusions, believed to be composed of tungsten, were found. One of the high-density inclusions was found to be hollow, which indicate that the inclusion stems from the powder manufacturing process and not related with the EBM process. By performing defect analyses with the XMT software it was also possible to quantify the amount of LOF and un-melted powder in vol%. From the XMT-data meshes were produced so that finite element method (FEM) simulations could be performed. From these FEM simulations the significant impact of defects on the material properties was evident, as the defects led to high stress concentrations. It could moreover, with FEM, be shown that the as-built surface roughness of EBM material is of importance as high surface roughness led to increased stress concentrations. | |
650 | 7 | a TEKNIK OCH TEKNOLOGIERx Materialteknikx Metallurgi och metalliska material0 (SwePub)205062 hsv//swe |
650 | 7 | a ENGINEERING AND TECHNOLOGYx Materials Engineeringx Metallurgy and Metallic Materials0 (SwePub)205062 hsv//eng |
650 | 7 | a TEKNIK OCH TEKNOLOGIERx Materialteknikx Annan materialteknik0 (SwePub)205992 hsv//swe |
650 | 7 | a ENGINEERING AND TECHNOLOGYx Materials Engineeringx Other Materials Engineering0 (SwePub)205992 hsv//eng |
650 | 7 | a TEKNIK OCH TEKNOLOGIERx Maskinteknikx Strömningsmekanik och akustik0 (SwePub)203062 hsv//swe |
650 | 7 | a ENGINEERING AND TECHNOLOGYx Mechanical Engineeringx Fluid Mechanics and Acoustics0 (SwePub)203062 hsv//eng |
650 | 7 | a TEKNIK OCH TEKNOLOGIERx Maskinteknikx Teknisk mekanik0 (SwePub)203012 hsv//swe |
650 | 7 | a ENGINEERING AND TECHNOLOGYx Mechanical Engineeringx Applied Mechanics0 (SwePub)203012 hsv//eng |
653 | a X-ray tomography | |
653 | a Ti-6Al-4V | |
653 | a Alloy 718 | |
653 | a defects and electron beam melting | |
653 | a Materialteknik | |
653 | a Engineering Materials | |
653 | a Hållfasthetslära | |
653 | a Solid Mechanics | |
653 | a Experimental Mechanics | |
653 | a Experimentell mekanik | |
700 | 1 | a Forsberg, Fredriku Luleå tekniska universitet,Strömningslära och experimentell mekanik4 aut0 (Swepub:ltu)fred |
700 | 1 | a Pederson, Robertu Department of Engineering Science, University West4 aut |
700 | 1 | a Antti, Marta-Lenau Luleå tekniska universitet,Materialvetenskap4 aut0 (Swepub:ltu)marta |
700 | 1 | a Åkerfeldt, Piau Luleå tekniska universitet,Materialvetenskap4 aut0 (Swepub:ltu)piaake |
700 | 1 | a Larsson, Simonu Luleå tekniska universitet,Material- och solidmekanik4 aut0 (Swepub:ltu)simlar |
700 | 1 | a Jonsén, Pär,d 1971-u Luleå tekniska universitet,Material- och solidmekanik4 aut0 (Swepub:ltu)parj |
700 | 1 | a Puyoo, Geraldineu GKN-Aerospace Engine Systems4 aut |
710 | 2 | a Luleå tekniska universitetb Materialvetenskap4 org |
773 | 0 | t Aeronautics and Aerospace Open Access Journald : MedCrave Groupg 2:3, s. 139-145q 2:3<139-145x 2576-4500 |
856 | 4 | u https://ltu.diva-portal.org/smash/get/diva2:1210242/FULLTEXT01.pdfx primaryx Raw objecty fulltext:print |
856 | 4 | u https://doi.org/10.15406/aaoaj.2018.02.00044 |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-68924 |
856 | 4 8 | u https://doi.org/10.15406/aaoaj.2018.02.00044 |
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