X-ray Micro Tomography Study of Internal Defects of Electron Beam Melted Ti6Al4V and Their Effect on Fatigue Behavior [Elektronisk resurs]
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Sandell, Viktor, 1991- (författare)
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The 14th world conference on titanium, Nantes, June 10-14, 2019
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Hansson, Thomas (författare)
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Forsberg, Fredrik (författare)
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Lycksam, Henrik (författare)
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Åkerfeldt, Pia (författare)
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Antti, Marta-Lena (författare)
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Luleå tekniska universitet Institutionen för teknikvetenskap och matematik (utgivare)
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Luleå tekniska universitet Extern (utgivare)
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Luleå tekniska universitet Institutionen för teknikvetenskap och matematik (utgivare)
- Publicerad: 2019
- Engelska.
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- Relaterad länk:
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http://www.ltu.se/ (Värdpublikation)
Sammanfattning
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- In this work, the fatigue behaviour of Ti6Al4V manufactured using electron beam melting, its dependency on porosity, distance from the base plate and build layer height were investigated.XCT scans of the fatigue sample gauge lengths were correlated to SEM investigations of the fracture surfaces. A comparison between the top and bottom halves of the builds in terms ofdefect population and fatigue behaviour was also made. Larger pores were detected in samples with a larger build layer height and lower position in the build chamber. Results also indicatethat part geometry and pore location, specifically closeness to the surface, are important factors regarding the initiation location of fatigue fractures at 1 % strain. Furthermore, a fatiguecritical lack of fusion defect was undetectable in the XCT scan.
Ämnesord
- Engineering and Technology (hsv)
- Materials Engineering (hsv)
- Metallurgy and Metallic Materials (hsv)
- Teknik och teknologier (hsv)
- Materialteknik (hsv)
- Metallurgi och metalliska material (hsv)
- Engineering Materials (ltu)
- Materialteknik (ltu)
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- government publication (marcgt)
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