Sökning: onr:"swepub:oai:DiVA.org:hv-13460" >
Microstructural inf...
Microstructural influence on fatigue crack propagation during high cycle fatigue testing of additively manufactured Alloy 718
-
- Balachandramurthi, Arun Ramanathan, 1989- (författare)
- Högskolan Väst,Avdelningen för avverkande och additativa tillverkningsprocesser (AAT),Univ West, Sweden
-
- Moverare, Johan (författare)
- Linköpings universitet,Högskolan Väst,Avdelningen för avverkande och additativa tillverkningsprocesser (AAT),Linköping University, Department of Management and Engineering, Linköping, Sweden,Konstruktionsmaterial,Tekniska fakulteten,Univ West, Sweden
-
- Dixit, Nikhil, 1993- (författare)
- Högskolan Väst,Avdelningen för avverkande och additativa tillverkningsprocesser (AAT),Univ West, Sweden
-
visa fler...
-
- Deng, Dunyong (författare)
- Linköpings universitet,Konstruktionsmaterial,Tekniska fakulteten
-
- Pederson, Robert, 1973- (författare)
- Högskolan Väst,Avdelningen för avverkande och additativa tillverkningsprocesser (AAT),PTW,Univ West, Sweden
-
visa färre...
-
(creator_code:org_t)
- Elsevier BV, 2019
- 2019
- Engelska.
-
Ingår i: Materials Characterization. - : Elsevier BV. - 1044-5803 .- 1873-4189. ; 149, s. 82-94
- Relaterad länk:
-
https://urn.kb.se/re...
-
visa fler...
-
https://doi.org/10.1...
-
https://urn.kb.se/re...
-
visa färre...
Abstract
Ämnesord
Stäng
- A study of the microstructure of additively manufactured Alloy 718 was performed in order to better understand the parameters that have an influence on the fatigue properties of the material. The specimens were manufactured using two powder bed fusion techniques – Electron Beam Melting (EBM) and Selective Laser Melting (SLM). Four point bending fatigue tests were performed at room temperature with a stress ratio of R = 0.1 and 20 Hz frequency, on material that was either in hot isostatically pressed (HIP) and solution treated and aged (STA) condition or in STA condition without a prior HIP treatment. The grains in the SLM material in the HIP + STA condition have grown considerably both in the hatch and the contour regions; EBM material, in contrast, shows grain growth only in the contour region. Fractographic analysis of the specimens in HIP + STA condition showed a faceted appearance while the specimens in STA condition showed a more planar crack appearance. The crack propagation occurred in a transgranular mode and it was found that precipitatessuch as NbC, TiN or δ-phase, when present, did not affect the crack path. The areas with larger grains corresponded to the faceted appearance of the fracture surface. This could be attributed to the plastic zone ahead of the crack tip being confined within one grain, in case of the larger grains, which promotes single shear crack growth mode
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Nyckelord
- Electron beam melting
- Selective laser melting
- Alloy 718
- Fatigue crack propagation
- Microstructure
- Hot isostatic pressing
- Manufacturing and materials engineering
- Produktions- och materialteknik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas