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Pederson, R., Andersson, J. & Joshi, S. V. (2023). Additive Manufacturing of High-Performance Metallic Materials (1.ed.). Elsevier
Öppna denna publikation i ny flik eller fönster >>Additive Manufacturing of High-Performance Metallic Materials
2023 (Engelska)Bok (Refereegranskat)
Ort, förlag, år, upplaga, sidor
Elsevier, 2023. s. 744 Upplaga: 1.
Nyckelord
Feedstock, processing, monitoring modeling, simulation
Nationell ämneskategori
Bearbetnings-, yt- och fogningsteknik
Forskningsämne
Produktionsteknik
Identifikatorer
urn:nbn:se:hv:diva-20865 (URN)9780323918855 (ISBN)9780323913829 (ISBN)
Tillgänglig från: 2023-11-22 Skapad: 2023-11-22 Senast uppdaterad: 2024-01-03Bibliografiskt granskad
Isoaho, J., Dordlofva, C., Segerstark, A., Harlin, P. & Pederson, R. (2023). Applications of additive manufacturing: Selected case studies and future prospects (1ed.). In: Pederson, Robert, Andersson, Joel & Joshi, Shrikant V. (Ed.), Additive Manufacturing of High-Performance metallic Materials: (pp. 676-716). Elsevier
Öppna denna publikation i ny flik eller fönster >>Applications of additive manufacturing: Selected case studies and future prospects
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2023 (Engelska)Ingår i: Additive Manufacturing of High-Performance metallic Materials / [ed] Pederson, Robert, Andersson, Joel & Joshi, Shrikant V., Elsevier, 2023, 1, s. 676-716Kapitel i bok, del av antologi (Refereegranskat)
Abstract [en]

From an industrial standpoint, cost is of one of the most important drivers for utilizing new technologies such as additive manufacturing (AM). Other important drivers for why AM can be an advantageous technology for component manufacturing is decreased manufacturing lead time, rapid demonstration capability, freedom of design/geometry, advancing technology development, and not least sustainability in terms of both material utilization and improved part/system performance. In this chapter, six selected “case studies” are compiled, in which AM techniques have been used to manufacture components for actual applications. In some case studies, a comparison between the additive manufacturing route and the corresponding conventional manufacturing route is also included.

Ort, förlag, år, upplaga, sidor
Elsevier, 2023 Upplaga: 1
Nyckelord
Cost, Component manufacturing, Demonstrator, Design freedom, Manufacturing lead time, Sustainability, Superalloys, Technology development, Titanium alloys
Nationell ämneskategori
Bearbetnings-, yt- och fogningsteknik
Forskningsämne
Produktionsteknik
Identifikatorer
urn:nbn:se:hv:diva-21093 (URN)9780323918855 (ISBN)9780323913829 (ISBN)
Tillgänglig från: 2023-12-19 Skapad: 2023-12-19 Senast uppdaterad: 2024-01-03Bibliografiskt granskad
Squillaci, L., Neikter, M., Hansson, T., Harlin, P., Niklasson, F. & Pederson, R. (2023). Extending powder particle size distribution of laser powder bed fusion Ti-6Al-4V: investigation of single tracks and multilayer experiments. In: : . Paper presented at 15th World Titanium Conference, June 2023, Edinburgh, United Kingdom.
Öppna denna publikation i ny flik eller fönster >>Extending powder particle size distribution of laser powder bed fusion Ti-6Al-4V: investigation of single tracks and multilayer experiments
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2023 (Engelska)Konferensbidrag, Muntlig presentation med publicerat abstract (Övrigt vetenskapligt)
Abstract [en]

This paper explores the effects of varying process parameters (i.e., laser power, laser scanning speed, hatch distance) on the characteristics of single tracks, triple tracks and cubes, in order to provide answers to Research Question 1. A full factorial DoE approach was adopted to produce the experiments. Data was extracted from different sources to find correlations between tracks and multilayer geometries. A digital microscope was used to obtain height profiles, whilst polished/etched cross sections cut parallel to the build direction were imaged using a LOM to obtain measurements of track height, width, melt pool depth, subsurface porosity and residual defect content in cubes. Track height was found to exceed the recoated value of 70μm for both single and triple tracks. The width of single tracks showed a clear upward trend when displayed against VED, showing a lateral expansion as energy input increased. It was also revealed that single tracks expand laterally as they grow above the substrate, indicating swelling. The melt pool depth showed a steady upward trend when plotted against LED, though less systematic than track width. A martensitic microstructure was detected, with hierarchical α’ needles growing at prescribed crystallographic directions within vertical prior-β grains. A large portion of spatter particles and unmelted powder granules were detected on the substrate and tracks, with many accumulating on the side of the tracks forming a denudation zone.

Nyckelord
extendign powder, laser powder
Nationell ämneskategori
Bearbetnings-, yt- och fogningsteknik
Forskningsämne
Produktionsteknik
Identifikatorer
urn:nbn:se:hv:diva-20988 (URN)
Konferens
15th World Titanium Conference, June 2023, Edinburgh, United Kingdom
Anmärkning

This paper is under review och will be published in Proceedings.

Tillgänglig från: 2023-11-24 Skapad: 2023-11-24 Senast uppdaterad: 2024-01-08Bibliografiskt granskad
Thalavai Pandian, K., Neikter, M., Bahbou, F., Ganvir, A., Hansson, T. & Pederson, R. (2023). Fatigue behavior of low-temperature hot isostatic pressed electron beam powder bed fusion manufactured Ti-6Al-4 V. Journal of Alloys and Compounds, 962, Article ID 171086.
Öppna denna publikation i ny flik eller fönster >>Fatigue behavior of low-temperature hot isostatic pressed electron beam powder bed fusion manufactured Ti-6Al-4 V
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2023 (Engelska)Ingår i: Journal of Alloys and Compounds, ISSN 0925-8388, Vol. 962, artikel-id 171086Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Ti-6Al-4 V finds application in the fan and compressor modules of gas turbine engines due to its high specific strength. Ti-6Al-4 V components manufactured using one of the additive manufacturing (AM) techniques, the electron beam powder bed fusion (PBF-EB) process, has been an active area of research in the past decade. The fatigue life of such PBF-EB built Ti-6Al-4 V components is improved by hot isostatic pressing (HIP) treatment typically performed at about 920 ˚C. The HIP treatment at 920 ˚C results in coarsening of α laths and reduced static strength and therefore a low-temperature HIP treatment is performed at about 800 ˚C to limit the impact on static mechanical properties. In the present work, the low cycle fatigue and fatigue crack growth behavior of such a modified HIP (low-temperature HIP) treated material is assessed and compared with the respective data for the standard HIP-treated material. The modified HIP-treated material has fatigue performance comparable to the standard HIP-treated material. This work suggests that the modified HIP treatment improves the static mechanical properties without significantly impacting the fatigue performance. Also, fatigue life predictions were made from the measured defect size at the crack initiation site using a linear elastic fracture mechanics tool. The life predictions show good agreement with the experimental values for defects greater than the intrinsic crack length, where life is well predicted by large-crack growth methodology. 

Ort, förlag, år, upplaga, sidor
Elsevier, 2023
Nyckelord
Additive manufacturing Electron beam melting Hot isostatic pressing Low cycle fatigue Fatigue crack growth Ti-6Al-4 V
Nationell ämneskategori
Bearbetnings-, yt- och fogningsteknik
Forskningsämne
Produktionsteknik
Identifikatorer
urn:nbn:se:hv:diva-20691 (URN)10.1016/j.jallcom.2023.171086 (DOI)001031870200001 ()2-s2.0-85163861805 (Scopus ID)
Forskningsfinansiär
Vinnova, 2019-02741
Anmärkning

CC BY 4.0

Tillgänglig från: 2023-09-06 Skapad: 2023-09-06 Senast uppdaterad: 2024-01-08Bibliografiskt granskad
Pederson, R., Andersson, J., Joshi, S. V., Neikter, M. & Isoaho, J. (2023). Metal additive manufacturing: Motivation, process portfolio, and application potential (1ed.). In: Pederson, Robert, Andersson, Joel & Joshi, Shrikant V. (Ed.), Additive Manufacturing of High-Performance metallic Materials: (pp. 20-40). Elsevier
Öppna denna publikation i ny flik eller fönster >>Metal additive manufacturing: Motivation, process portfolio, and application potential
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2023 (Engelska)Ingår i: Additive Manufacturing of High-Performance metallic Materials / [ed] Pederson, Robert, Andersson, Joel & Joshi, Shrikant V., Elsevier, 2023, 1, s. 20-40Kapitel i bok, del av antologi (Refereegranskat)
Abstract [en]

The idea of adding material only where needed to manufacturesolid metallic high-performing components is intriguing andone of the main reasons for the great interest in additivemanufacturing (AM) around the world. Especially whensustainability comes into play, as in recent times more thanever, AM technology is most appropriate since it enables almostfull material utilization with minimal waste. From an economicstandpoint, this becomes particularly advantageous for moreexpensive materials such as superalloys and titanium alloys.However, the route of going from a CAD drawing of a part to anadditively manufactured final component that is qualified and inserial production involves numerous challenges. The intentionof this book is to shed light on and explain some of theassociated challenges beginning with the importance of thestarting material and how it is manufactured, i.e., wire orpowder, continuing into description of the conventional andPederson, R., Andersson, J., & Joshi, S. (2023). Additive manufacturing of high-performance metallic materials. Elsevier.Created from vast-ebooks on 2024-01-08 16:09:20. Copyright © 2023. Elsevier. All rights reserved.most commonly used AM processes, followed by postbuildtreatments and nondestructive evaluations, to eventuallyproduce the final part with mechanical performance consistentwith the application requirements. In the end, selected realindustry examples of AM parts for actual applications will bepresented

Ort, förlag, år, upplaga, sidor
Elsevier, 2023 Upplaga: 1
Nyckelord
Additive manufacturing; Superalloys; Titanium alloys; Powder; Wire; Postbuild treatment; Nondestructive evaluation; Mechanical properties
Nationell ämneskategori
Bearbetnings-, yt- och fogningsteknik
Forskningsämne
Produktionsteknik
Identifikatorer
urn:nbn:se:hv:diva-21065 (URN)9780323918855 (ISBN)9780323913829 (ISBN)
Tillgänglig från: 2023-12-14 Skapad: 2023-12-14 Senast uppdaterad: 2024-01-26Bibliografiskt granskad
Mahade, S., Bhattacharya, P., Tolvanen, S., Pederson, R. & Neikter, M. (2023). Processing of high-performance materials by laser directed energy deposition with wire (1.ed.). In: Pederson, Robert, Andersson, Joel & Joshi, Shrikant V. (Ed.), Additive Manufacturing of High-Performance metallic Materials: (pp. 260-305). Elsevier
Öppna denna publikation i ny flik eller fönster >>Processing of high-performance materials by laser directed energy deposition with wire
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2023 (Engelska)Ingår i: Additive Manufacturing of High-Performance metallic Materials / [ed] Pederson, Robert, Andersson, Joel & Joshi, Shrikant V., Elsevier, 2023, 1., s. 260-305Kapitel i bok, del av antologi (Refereegranskat)
Abstract [en]

Processing of metallic materials by Laser Directed Energy Deposition (LDED), with Wire (w) as the feedstock, enables the manufacturing of high precision, near-net shape components that require minimal postmachining, without compromising the performance. L-DEDw has also shown the capability to add intricate features on large structures, which makes it an attractive fabrication technique for aerospace application. The key merits of wire as the feedstock when compared to powder include; higher deposition rates, low porosity in the deposited material, excellent surface finish, and, ∼ 100% utilization of the feedstock. However, despite the attractive merits, the difference in solidification rates during L-DEDw processing when compared to other fabrication routes could induce high residual stresses, which can be detrimental to the integrity of cracksensitive alloys. Additionally, there exists an inherent challenge during L-DEDw fabrication, where controlling the process variables to ensure stable deposition conditions becomes essential to achieve repeatable, and desired results. The recent advancements in the area of monitoring and control systems, and their integration with L-DEDw processing, have enabled to overcome the processing instability related challenges. Furthermore, different L-DEDw processing strategies for alleviating residual stresses (tensile) accumulation in the deposits are discussed, which could enable defectfree, high-performance component fabrication. Although the utilization of L-DEDw for processing diverse alloy systems has been explored in the literature, the current chapter's scope is restricted to L-DEDw processing of Nickel-based and Titanium-based alloys, which are often utilized in the aeroengine. This work aims to provide a holistic perspective and shed light on the state-of-the-art, recent developments, sustainability aspects and future directions for L-DEDw processed, highperformance Ni-based and Ti-based alloys.

Ort, förlag, år, upplaga, sidor
Elsevier, 2023 Upplaga: 1.
Nyckelord
Laser directed energy deposition with wire; Process parameters; Microstructure; Residual stress; Nibased superalloys; Ti-based alloys; Hot cracking; Lack of fusion
Nationell ämneskategori
Bearbetnings-, yt- och fogningsteknik
Forskningsämne
Produktionsteknik
Identifikatorer
urn:nbn:se:hv:diva-21072 (URN)9780323918855 (ISBN)9780323913829 (ISBN)
Tillgänglig från: 2023-12-14 Skapad: 2023-12-14 Senast uppdaterad: 2024-01-12Bibliografiskt granskad
Adegoke, O., Kumara, C., Thuvander, M., Deirmina, F., Andersson, J., Brodin, H., . . . Pederson, R. (2023). Scanning electron microscopy and atom probe tomography characterization of laser powder bed fusion precipitation strengthening nickel-based superalloy. Micron, 171, Article ID 103472.
Öppna denna publikation i ny flik eller fönster >>Scanning electron microscopy and atom probe tomography characterization of laser powder bed fusion precipitation strengthening nickel-based superalloy
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2023 (Engelska)Ingår i: Micron, ISSN 0968-4328, E-ISSN 1878-4291, Vol. 171, artikel-id 103472Artikel i tidskrift (Refereegranskat) Epub ahead of print
Abstract [en]

Atom probe tomography (APT) was utilized to supplement scanning electron microscopy (SEM) characterizationof a precipitation strengthening nickel-based superalloy, Alloy 247LC, processed by laser powder bed fusion (LPBF). It was observed that the material in the as-built condition had a relatively high strength. Using both SEMand APT, it was concluded that the high strength was not attributed to the typical precipitation strengtheningeffect of γ’. In the absence of γ’ it could be reasonably inferred that the numerous black dots observed in thecells/grains with SEM were dislocations and as such should be contributing significantly to the strengthening.Thus, the current investigation demonstrated that relatively high strengthening can be attained in L-PBF even inthe absence of precipitated γ’. Even though γ’ was not precipitated, the APT analysis displayed a nanometer scalepartitioning of Cr that could be contributing to the strengthening. After heat-treatment, γ’ was precipitated and itdemonstrated the expected high strengthening behavior. Al, Ta and Ti partitioned to γ’. The strong partitioningof Ta in γ’ is indicative that the element, together with Al and Ti, was contributing to the strain-age crackingoccurring during heat-treatment. Cr, Mo and Co partitioned to the matrix γ phase. Hf, Ta, Ti and W were found inthe carbides corroborating previous reports that they are MC. 

Nyckelord
CM247LC, Superalloy, Additive manufacturing, atom probe tomography, Scanning electron microscopy, gamma prime
Nationell ämneskategori
Bearbetnings-, yt- och fogningsteknik
Forskningsämne
Produktionsteknik
Identifikatorer
urn:nbn:se:hv:diva-20014 (URN)10.1016/j.micron.2023.103472 (DOI)000999885100001 ()37146362 (PubMedID)2-s2.0-85154065448 (Scopus ID)
Tillgänglig från: 2023-06-01 Skapad: 2023-06-01 Senast uppdaterad: 2024-01-15Bibliografiskt granskad
Neikter, M., Bhaskar, P., Singh, S., Kadoi, K., Lyphout, C., Svahn, F. & Pederson, R. (2023). Tensile properties of laser powder bed fusion built JBK-75 austenitic stainless steel. Materials Science & Engineering: A, 874, Article ID 144911.
Öppna denna publikation i ny flik eller fönster >>Tensile properties of laser powder bed fusion built JBK-75 austenitic stainless steel
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2023 (Engelska)Ingår i: Materials Science & Engineering: A, ISSN 0921-5093, E-ISSN 1873-4936, Vol. 874, artikel-id 144911Artikel i tidskrift (Refereegranskat) Epub ahead of print
Abstract [en]

Laser powder bed fusion (PBF-LB) is an additive manufacturing (AM) process that has several advantages to conventional manufacturing, such as near net-shaping capabilities and reduced material wastage. To be able to manufacture a novel material, however, one needs to first optimize the process parameters, to decrease porosity content as low as possible. Therefore, in this work the process parameters of PBF-LB built JBK-75 austenitic stainless steel, and its influence on porosity, microstructure, and hardness have been investigated. The least amount of porosity was found by using 132 W laser power, 750 mm/s scan speed, layer thickness 30 μm, and 0.12 mm hatch distance. These process parameters were then used to manufacture material for tensile testing, to investigate the tensile properties of PBF-LB built JBK-75 and potential anisotropic behavior. Hot isostatic pressing (HIP) was also performed in two sets of samples, to investigate the effect of pore closure on the tensile properties. The ultimate tensile strength (UTS) for the un-HIPed specimens was 1180 (horizontally built) and 1110 (vertically built) MPa. For the HIPed specimens, it was 1160 (horizontally built) and 1100 (vertically built) MPa. The anisotropic presence was explained by the presence of texture, with a multiple of random distribution (MRD) up to 4.34 for the {001} planes, and defects.

Nyckelord
Austenitic stainless steel, Process parameters, Laser powder bed fusion (PBF-LB), JBK-75, Design of experiment (DOE), Tensile properties
Nationell ämneskategori
Bearbetnings-, yt- och fogningsteknik
Forskningsämne
Produktionsteknik
Identifikatorer
urn:nbn:se:hv:diva-20015 (URN)10.1016/j.msea.2023.144911 (DOI)001029577000001 ()2-s2.0-85153940822 (Scopus ID)
Forskningsfinansiär
Västra Götalandsregionen, 20201639Tillväxtverket, 20201639
Anmärkning

Västra Götalandsregionen through Tillväxtverket (European Regional Development Fund) and GKN Aerospace Sweden AB funded this research project through the Spacelab project (grant number 20201639). 

Tillgänglig från: 2023-06-02 Skapad: 2023-06-02 Senast uppdaterad: 2024-01-15Bibliografiskt granskad
Andersson, J., Hosseini, V., Neikter, M. & Pederson, R. (2023). Welding of special alloys. In: Fuad Khoshnaw (Ed.), Welding of Metallic Materials: Methods, Metallurgy, and Performance (pp. 279-316). Elsevier
Öppna denna publikation i ny flik eller fönster >>Welding of special alloys
2023 (Engelska)Ingår i: Welding of Metallic Materials: Methods, Metallurgy, and Performance / [ed] Fuad Khoshnaw, Elsevier , 2023, s. 279-316Kapitel i bok, del av antologi (Övrigt vetenskapligt)
Abstract [en]

Specialty alloys are a broad group of materials providing superior properties to common materials and are therefore used for more demanding applications. Specialty alloys require sophisticated manufacturing routes, e.g., vacuum metallurgy, to account for all the alloying elements needed to finalize the specific alloy for its intended purpose. The alloys of Duplex stainless steels, superalloys, and Titanium alloys are examples of so-called specialty alloys where aerospace, chemical, and petrochemical industries are just a few areas mentioned where these specialty alloys are frequently used. Duplex stainless steel, had superior mechanical properties and corrosion resistance, making them a sustainable choice for a wide variety of applications i.e., petrochemical industries. The superalloys, and especially the precipitation hardening ones belong to a unique plethora of alloys commonly used in aerospace as well as land-based gas turbines which possess superb mechanical performance at elevated temperatures. However, the superalloys are unfortunately very challenging to process, not at least regarding weld cracking. With their high specific strength and corrosion resistance, titanium alloys are favorable for numerous applications. However, they react readily with oxygen at elevated temperatures and therefore inert atmosphere must be used during welding. 

Ort, förlag, år, upplaga, sidor
Elsevier, 2023
Nyckelord
Specialty alloys, welding, super alloy, special alloys
Nationell ämneskategori
Bearbetnings-, yt- och fogningsteknik
Forskningsämne
Produktionsteknik
Identifikatorer
urn:nbn:se:hv:diva-19832 (URN)10.1016/B978-0-323-90552-7.00003-1 (DOI)2-s2.0-85150109624 (Scopus ID)9780323906708 (ISBN)9780323905527 (ISBN)
Tillgänglig från: 2023-11-07 Skapad: 2023-11-07 Senast uppdaterad: 2024-01-12Bibliografiskt granskad
Thalavai Pandian, K., Neikter, M., Bahbou, F., Hansson, T. & Pederson, R. (2022). Elevated-Temperature Tensile Properties of Low-Temperature HIP-Treated EBM-Built Ti-6Al-4V.. Materials, 15(10), Article ID 3624.
Öppna denna publikation i ny flik eller fönster >>Elevated-Temperature Tensile Properties of Low-Temperature HIP-Treated EBM-Built Ti-6Al-4V.
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2022 (Engelska)Ingår i: Materials, ISSN 1996-1944, E-ISSN 1996-1944, Vol. 15, nr 10, artikel-id 3624Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Evaluation of the high-temperature tensile properties of Ti-6Al-4V manufactured by electron beam melting (EBM) and subjected to a low-temperature hot isostatic pressing (HIP) treatment (800 °C) was performed in this study. The high-temperature tensile properties of as-built and standard HIP-treated (920 °C) materials were studied for comparison. Metallurgical characterization of the as-built, HIP-treated materials was carried out to understand the effect of temperature on the microstructure. As the HIP treatments were performed below the β-transus temperature (995 °C for Ti-6Al-4V), no significant difference was observed in β grain width between the as-built and HIP-treated samples. The standard HIP-treated material measured about 1.4×-1.7× wider α laths than those in the modified HIP (low-temperature HIP)-treated and as-built samples. The standard HIP-treated material showed about a 10-14% lower yield strength than other tested materials. At 350 °C, the yield strength decreased to about 65% compared to the room-temperature strength for all tested specimens. An increase in ductility was observed at 150 °C compared to that at room temperature, but the values decreased between 150 and 350 °C because of the activation of different slip systems.

Ort, förlag, år, upplaga, sidor
MDPI, 2022
Nyckelord
Ti-6Al-4V, additive manufacturing, electron beam melting, elevated temperature tensile strength, high-temperature mechanical properties, hot isostatic pressing
Nationell ämneskategori
Bearbetnings-, yt- och fogningsteknik
Forskningsämne
Produktionsteknik
Identifikatorer
urn:nbn:se:hv:diva-18442 (URN)10.3390/ma15103624 (DOI)000801377700001 ()35629650 (PubMedID)2-s2.0-85130891800 (Scopus ID)
Forskningsfinansiär
Vinnova, 2019-02741
Anmärkning

This research was funded by VINNOVA, through the “Nationella flygtekniska forskningsprogrammet7” (NFFP) (project #: 2019-02741).

Tillgänglig från: 2022-10-31 Skapad: 2022-10-31 Senast uppdaterad: 2022-10-31
Organisationer
Identifikatorer
ORCID-id: ORCID iD iconorcid.org/0000-0002-7675-7152

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