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Fatigue Crack Growth of Electron Beam Melted Ti-6Al-4V in High-Pressure Hydrogen
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- Neikter, Magnus, 1988- (author)
- Högskolan Väst,Luleå tekniska universitet,Materialvetenskap,Division of Subtractive and Additive Manufacturing, University West, 46132 Trollhättan, Sweden,Avdelningen för avverkande och additativa tillverkningsprocesser (AAT),Luleå University of Technology, Division of Materials Science, Luleå, 97181, Sweden;Chalmers University of Technology,,PTW,Luleå tekniska universitet (LTU),Luleå University of Technology (LTU),University West
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- Hörnqvist Colliander, Magnus, 1979 (author)
- Chalmers University of Technology,Department of Applied Physics, Göteborg, 41296, Sweden,Chalmers tekniska högskola
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- de Andrade Schwerz, Claudia, 1992 (author)
- GKN Aerospace Engine Systems, 461 38 Trollhättan, Sweden,GKN Aerospace Services Limited
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- (creator_code:org_t)
- 2020-03-12
- 2020
- English.
- In: Materials. - : MDPI. - 1996-1944. ; 13:6
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- Titanium-based alloys are susceptible to hydrogen embrittlement (HE), a phenomenon that deteriorates fatigue properties. Ti-6Al-4V is the most widely used titanium alloy and the effect of hydrogen embrittlement on fatigue crack growth (FCG) was investigated by carrying out crack propagation tests in air and high-pressure H2 environment. The FCG test in hydrogen environment resulted in a drastic increase in crack growth rate at a certain Δ K, with crack propagation rates up to 13 times higher than those observed in air. Possible reasons for such behavior were discussed in this paper. The relationship between FCG results in high-pressure H2 environment and microstructure was investigated by comparison with already published results of cast and forged Ti-6Al-4V. Coarser microstructure was found to be more sensitive to HE. Moreover, the electron beam melting (EBM) materials experienced a crack growth acceleration in-between that of cast and wrought Ti-6Al-4V.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Annan materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Other Materials Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Teknisk mekanik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Applied Mechanics (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Keyword
- fatigue crack growth (FCG)
- electron beam melting (EBM)
- Ti-6Al-4V
- hydrogen embrittlement (HE)
- Materialteknik
- Engineering Materials
Publication and Content Type
- ref (subject category)
- art (subject category)
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