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On the combined eff...
On the combined effects of surface quality and pore size on the fatigue life of Al–7Si–3Cu–Mg alloy castings
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- Bogdanoff, Toni (författare)
- Jönköping University,JTH, Material och tillverkning
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- Tiryakioğlu, M. (författare)
- School of Engineering and Technology, Jacksonville University, 2800 University Boulevard N, Jacksonville, 32211, FL, United States
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- Jarfors, Anders E.W. 1963- (författare)
- Jönköping University,JTH, Material och tillverkning
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- Seifeddine, Salem, 1978- (författare)
- Jönköping University,JTH, Material och tillverkning
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- Ghassemali, Ehsan, 1983- (författare)
- Jönköping University,JTH, Material och tillverkning
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(creator_code:org_t)
- Elsevier, 2023
- 2023
- Engelska.
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Ingår i: Materials Science & Engineering. - : Elsevier. - 0921-5093 .- 1873-4936. ; 885
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- This study has aimed to determine the effects of surface quality and pore size, obtained by different levels of hydrogen content of the liquid metal, on the fatigue behavior of an Al–7%Si–3%Cu–Mg casting alloy. Three surface conditions have been studied: as-cast rough, as-cast smooth, and standard machined and polished surface. The S–N curves have shown that surface roughness and hydrogen content individually impact fatigue strength. Surprisingly, the fatigue strength of machined and polished samples, which aligns with standard testing practices, is significantly reduced, compared to other conditions. Fatigue cracks have been observed to initiate at the pores just below the as-cast surface or on the machined surfaces. In all cases, pores have been observed to be surrounded by bifilms. Moreover, hydrogen content and roughness of the as-cast surface have been found to interact to determine the fatigue performance. These findings necessitate a re-evaluation of fatigue testing procedures for cast aluminum components.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
Nyckelord
- Bifilms
- Fracture
- Oxide skin
- Pores
- Weibull
- Fatigue testing
- Hydrogen
- Magnesium alloys
- Surface properties
- Surface roughness
- As-cast
- Cast surface
- Combined effect
- Fatigue strength
- Hydrogen contents
- Machined surface
- Oxide skins
- Pore
- Pore size
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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