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Influence of hydrog...
Influence of hydrogen environment on fatigue crack growth in forged Ti-6Al-4V : fractographic analysis
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- Gaddam, Raghuveer (author)
- Luleå tekniska universitet,Materialvetenskap
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- Pederson, Robert (author)
- Luleå tekniska universitet,Materialvetenskap
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- Hörnqvist Colliander, Magnus, 1979 (author)
- GKN Aerospace Engine Systems,Chalmers tekniska högskola,Chalmers University of Technology
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- Antti, Marta-Lena (author)
- Luleå tekniska universitet,Materialvetenskap
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(creator_code:org_t)
- IOP Publishing Ltd, 2013
- 2013
- English.
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In: 7th EEIGM International Conference on Advanced Materials Research. - : IOP Publishing Ltd. ; 48, s. 012010-
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Abstract
Subject headings
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- In this study, the influence of hydrogen environment (15 MPa) on the fatigue crack growth in forged Ti-6A1-4V at room temperature is investigated. It is observed that at 21 < ΔK > 25 MPa√m, there exists a change of fatigue crack growth rate (FCGR) in hydrogen environment, and it is accelerated at ΔK > 25MPa√m. FCGR in hydrogen environment is dependent on the stress intensity levels (ΔK). Detailed fractographic analysis of the fracture surfaces were performed at different ΔK using high-resolution scanning electron microscope (HR-SEM). Fatigue striations were observed in air and hydrogen at ΔK < 21MPa√m. At ΔK > 21MPa√m, secondary cracks were observed in hydrogen environment. The differences in appearances of fracture surfaces in air and hydrogen are discussed.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Annan materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Other Materials Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Keyword
- Materialteknik
- Engineering Materials
Publication and Content Type
- ref (subject category)
- kon (subject category)
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