Pub Date : 2024-08-01DOI: 10.1088/1757-899x/1310/1/012036
S Sun, C F Zhang, W Y Wang, A Godfrey
Nanoporous structures with high surface area can be obtained by 3D printing of lattice structures and subsequent dealloying, with potential applications in the field of catalysis and batteries. Here we prepared a AlSi10Mg-Cu (38wt%) alloy by laser-powder bed fusion of mixed powders. A metastable structure was obtained after 3D printing, with significant differences in solidification structures in different regions. The solidification structure is inherited after dealloying, in which dendrites form submicron ligaments, and nanoscale ligaments are formed inside the dendrites. Dealloying of a 3D-printed lattice structure allows the preparation of hierarchical nanoporous copper with only limited crack formation.
{"title":"Synthesis and characterization of the dealloyed hierarchical structure of AlSi10Mg-Cu alloys prepared using laser-powder bed fusion","authors":"S Sun, C F Zhang, W Y Wang, A Godfrey","doi":"10.1088/1757-899x/1310/1/012036","DOIUrl":"https://doi.org/10.1088/1757-899x/1310/1/012036","url":null,"abstract":"Nanoporous structures with high surface area can be obtained by 3D printing of lattice structures and subsequent dealloying, with potential applications in the field of catalysis and batteries. Here we prepared a AlSi10Mg-Cu (38wt%) alloy by laser-powder bed fusion of mixed powders. A metastable structure was obtained after 3D printing, with significant differences in solidification structures in different regions. The solidification structure is inherited after dealloying, in which dendrites form submicron ligaments, and nanoscale ligaments are formed inside the dendrites. Dealloying of a 3D-printed lattice structure allows the preparation of hierarchical nanoporous copper with only limited crack formation.","PeriodicalId":14483,"journal":{"name":"IOP Conference Series: Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-01DOI: 10.1088/1757-899x/1310/1/012002
R. Otsuka, T. Kikuchi, T. Yamamoto, S. Katayama
The metal additive manufacturing (AM) process allows for the production of three-dimensional (3D) parts with unique geometries that could not be formed by conventional methods. However, our aim is to utilize the AM process to create never-before-seen new materials because we believe it holds potential not only for new processing but also for creating a new material. The TiB2-Fe composite powder developed as a new raw material of the AM process, which was used as an additive powder in additive manufactured (AMed) SUS316L for effectively improving the mechanical properties of AMed SUS316L. The TiB2-reinfoced SUS316L synthesized by a Powder Bed Fusion (PBF) method using the TiB2-Fe composite powder had an extremely high Vickers hardness and strength of about 400 HV and 1250 MPa, respectively, being close to twice those of AMed SUS316L.
{"title":"Additive manufacturing to design a new material TiB2-reinforced SUS316L using TiB2-Fe composite powder","authors":"R. Otsuka, T. Kikuchi, T. Yamamoto, S. Katayama","doi":"10.1088/1757-899x/1310/1/012002","DOIUrl":"https://doi.org/10.1088/1757-899x/1310/1/012002","url":null,"abstract":"The metal additive manufacturing (AM) process allows for the production of three-dimensional (3D) parts with unique geometries that could not be formed by conventional methods. However, our aim is to utilize the AM process to create never-before-seen new materials because we believe it holds potential not only for new processing but also for creating a new material. The TiB<sub>2</sub>-Fe composite powder developed as a new raw material of the AM process, which was used as an additive powder in additive manufactured (AMed) SUS316L for effectively improving the mechanical properties of AMed SUS316L. The TiB<sub>2</sub>-reinfoced SUS316L synthesized by a Powder Bed Fusion (PBF) method using the TiB<sub>2</sub>-Fe composite powder had an extremely high Vickers hardness and strength of about 400 HV and 1250 MPa, respectively, being close to twice those of AMed SUS316L.","PeriodicalId":14483,"journal":{"name":"IOP Conference Series: Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-01DOI: 10.1088/1757-899x/1310/1/012032
Riccardo Civiero, Anter El-Azab
Composition fluctuations are commonly observed in additive manufactured alloys, high entropy alloys and irradiated alloys. These fluctuations, which arise due to thermodynamic and/or kinetic factors, influence the mechanical strength of alloys. The classical theory of spinodal strengthening in alloys with coherency stress arising due to the spinodal long-range composition fluctuations has been developed by Cahn, Kato and others. We present the motivations for revisiting Cahn’s theory to account for the concurrent solid solution strengthening in spinodally strengthened alloys by taking into consideration the effect of the solute friction along with the internal coherency stress. We briefly expose the model we developed to achieve the aforementioned aim and discuss some findings.
{"title":"Revisiting the Theory of Spinodal Strengthening: Implications for Inhomogeneous Additive and Irradiated Structural Alloys","authors":"Riccardo Civiero, Anter El-Azab","doi":"10.1088/1757-899x/1310/1/012032","DOIUrl":"https://doi.org/10.1088/1757-899x/1310/1/012032","url":null,"abstract":"Composition fluctuations are commonly observed in additive manufactured alloys, high entropy alloys and irradiated alloys. These fluctuations, which arise due to thermodynamic and/or kinetic factors, influence the mechanical strength of alloys. The classical theory of spinodal strengthening in alloys with coherency stress arising due to the spinodal long-range composition fluctuations has been developed by Cahn, Kato and others. We present the motivations for revisiting Cahn’s theory to account for the concurrent solid solution strengthening in spinodally strengthened alloys by taking into consideration the effect of the solute friction along with the internal coherency stress. We briefly expose the model we developed to achieve the aforementioned aim and discuss some findings.","PeriodicalId":14483,"journal":{"name":"IOP Conference Series: Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-01DOI: 10.1088/1757-899x/1310/1/012027
M Defer, S Dasgupta, A J Shahani, X Xiao, D Juul Jensen, Y Zhang
In AlSi10Mg samples manufactured by Laser Powder Bed Fusion, distinguishing the Si eutectic network/Si particles from the Al matrix by X-ray imaging is challenging due to the low absorption contrast between the Al and Si. This work investigates the possibility of overcoming this obstacle in synchrotron transmission X-ray microscopy. Effects of both different defocusing conditions and X-ray beam energies are evaluated and optimal conditions are identified for imaging a sample annealed post-print for 2h at 520°C. It is shown that both large particles (e.g. 4μm) and particles as small as 0.5 μm, can be imaged with reasonable precision in 3D non-destructively.
在通过激光粉末床熔融技术制造的 AlSi10Mg 样品中，由于 Al 和 Si 之间的吸收对比度较低，通过 X 射线成像将 Si 共晶网络/Si 颗粒与 Al 基体区分开来具有挑战性。这项研究探讨了在同步辐射透射 X 射线显微镜中克服这一障碍的可能性。研究评估了不同散焦条件和 X 射线束能量的影响，并确定了在 520°C 下对退火后印刷 2 小时的样品进行成像的最佳条件。结果表明，无论是大颗粒（如 4 微米）还是小至 0.5 微米的颗粒，都能以合理的精度进行三维无损成像。
{"title":"Characterization of Si particles in additively manufactured AlSi10Mg using synchrotron transmission X-ray nanotomography","authors":"M Defer, S Dasgupta, A J Shahani, X Xiao, D Juul Jensen, Y Zhang","doi":"10.1088/1757-899x/1310/1/012027","DOIUrl":"https://doi.org/10.1088/1757-899x/1310/1/012027","url":null,"abstract":"In AlSi10Mg samples manufactured by Laser Powder Bed Fusion, distinguishing the Si eutectic network/Si particles from the Al matrix by X-ray imaging is challenging due to the low absorption contrast between the Al and Si. This work investigates the possibility of overcoming this obstacle in synchrotron transmission X-ray microscopy. Effects of both different defocusing conditions and X-ray beam energies are evaluated and optimal conditions are identified for imaging a sample annealed post-print for 2h at 520°C. It is shown that both large particles (e.g. 4μm) and particles as small as 0.5 μm, can be imaged with reasonable precision in 3D non-destructively.","PeriodicalId":14483,"journal":{"name":"IOP Conference Series: Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-01DOI: 10.1088/1757-899x/1310/1/012004
D A H Wartacz, H Becker, S Antusch, N Ordás, C Gundlach, O V Mishin, W Pantleon
Two metallic materials considered for the divertor in fusion reactors are manufactured by powder bed fusion through electron beam melting: tungsten as armor of plasma-facing components and an age-hardenable CuCrZr alloy as heat sink material for the divertor. Cuboids are additively manufactured from both materials, and cross sections containing the build direction are characterized by electron backscatter diffraction. A peculiar heterogeneity is observed in the microstructure of tungsten and traced to the scanning strategy. Large columnar grains along the building direction with slight outward inclination are seen on both sides of the cross section i.e. where grains are observed in viewing planes perpendicular to the printing direction. Grains appear only slightly elongated in the center; neither their entire length nor their inclination is detected when the plane of view contains the printing direction. Many incidental twin boundaries are identified in the CuCrZr alloy; their occurrence is rationalized by the presence of an almost perfect <110> fiber texture. Additionally, X-ray computed tomography confirmed the low porosity of the CuCrZr specimen.
{"title":"Microstructure of additive manufactured materials for plasma-facing components of future fusion reactors","authors":"D A H Wartacz, H Becker, S Antusch, N Ordás, C Gundlach, O V Mishin, W Pantleon","doi":"10.1088/1757-899x/1310/1/012004","DOIUrl":"https://doi.org/10.1088/1757-899x/1310/1/012004","url":null,"abstract":"Two metallic materials considered for the divertor in fusion reactors are manufactured by powder bed fusion through electron beam melting: tungsten as armor of plasma-facing components and an age-hardenable CuCrZr alloy as heat sink material for the divertor. Cuboids are additively manufactured from both materials, and cross sections containing the build direction are characterized by electron backscatter diffraction. A peculiar heterogeneity is observed in the microstructure of tungsten and traced to the scanning strategy. Large columnar grains along the building direction with slight outward inclination are seen on both sides of the cross section i.e. where grains are observed in viewing planes perpendicular to the printing direction. Grains appear only slightly elongated in the center; neither their entire length nor their inclination is detected when the plane of view contains the printing direction. Many incidental twin boundaries are identified in the CuCrZr alloy; their occurrence is rationalized by the presence of an almost perfect <110> fiber texture. Additionally, X-ray computed tomography confirmed the low porosity of the CuCrZr specimen.","PeriodicalId":14483,"journal":{"name":"IOP Conference Series: Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-01DOI: 10.1088/1757-899x/1310/1/012019
K Zhang, S Wenner, C D Marioara, E W Hovig, Q Du, M Onsøien, K Marthinsen
Additive manufacturing of high strength wrought grade aluminium alloys is of great industrial and academic interests, but still difficult in practice due to the tendency of crack formations in the microstructure. This work aimed at producing dense crack-free samples of AA7075-type aluminium alloys by the laser powder bed fusion (LPBF) technology, and to investigate the microstructure. It was found that LPBF of pure AA7075 powder gave micro-cracks for all tested 25 processing parameters which covered a wide range of laser power and speed. In order to avoid the cracks, different methods were tried including high preheating temperature, introducing nano-particles, and adding Si into the alloys. Introducing ZrH2 nano-particles into AA7075 by mechanical blending could successfully produce crack-free samples using LPBF. Adding 5% Si into the AA7075 powder by mechanical blending could also give crack-free samples with high relative density. It was also found that the as-built samples with preheating at 250°C had hardness as-low-as 70HV. Solutionizing at 480°C with water quenching followed by artificial aging at 120°C can bring the hardness to 140HV and 120HV, for the AA7075 variants with ZrH2 and with addition of Si, respectively. Detailed characterizations revealed clear influences of both preheating temperature and alloying on the microstructure. It is concluded that preheating temperature should be carefully selected for AM of high strength precipitation hardening Al alloys.
{"title":"Additive Manufacturing of 7xxx Aluminium Alloys by Laser Powder Bed Fusion","authors":"K Zhang, S Wenner, C D Marioara, E W Hovig, Q Du, M Onsøien, K Marthinsen","doi":"10.1088/1757-899x/1310/1/012019","DOIUrl":"https://doi.org/10.1088/1757-899x/1310/1/012019","url":null,"abstract":"Additive manufacturing of high strength wrought grade aluminium alloys is of great industrial and academic interests, but still difficult in practice due to the tendency of crack formations in the microstructure. This work aimed at producing dense crack-free samples of AA7075-type aluminium alloys by the laser powder bed fusion (LPBF) technology, and to investigate the microstructure. It was found that LPBF of pure AA7075 powder gave micro-cracks for all tested 25 processing parameters which covered a wide range of laser power and speed. In order to avoid the cracks, different methods were tried including high preheating temperature, introducing nano-particles, and adding Si into the alloys. Introducing ZrH<sub>2</sub> nano-particles into AA7075 by mechanical blending could successfully produce crack-free samples using LPBF. Adding 5% Si into the AA7075 powder by mechanical blending could also give crack-free samples with high relative density. It was also found that the as-built samples with preheating at 250°C had hardness as-low-as 70HV. Solutionizing at 480°C with water quenching followed by artificial aging at 120°C can bring the hardness to 140HV and 120HV, for the AA7075 variants with ZrH<sub>2</sub> and with addition of Si, respectively. Detailed characterizations revealed clear influences of both preheating temperature and alloying on the microstructure. It is concluded that preheating temperature should be carefully selected for AM of high strength precipitation hardening Al alloys.","PeriodicalId":14483,"journal":{"name":"IOP Conference Series: Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-01DOI: 10.1088/1757-899x/1310/1/012021
MS Kenevisi, PA Martelli, FS Gobber, D Ugues, S Biamino
Directed Energy Deposition (DED) is an additive manufacturing process which can be used to repair defected components, such as blanking dies made of K340 tool steel. In this work, double tracks of K340 steel were deposited using DED process to study the processability of the alloy, and the tracks were characterized by light optical microscopy (LOM), scanning electron microscopy (SEM) and microhardness test. The results showed that near full-dense deposits can be made. However, the thermal cycle imposed by the process alters the microstructure of the material. Further investigation is required to make it possible to achieve a more homogeneous microstructure.
{"title":"Processability of K340 Cold Work Tool Steel by Directed Energy Deposition Technique","authors":"MS Kenevisi, PA Martelli, FS Gobber, D Ugues, S Biamino","doi":"10.1088/1757-899x/1310/1/012021","DOIUrl":"https://doi.org/10.1088/1757-899x/1310/1/012021","url":null,"abstract":"Directed Energy Deposition (DED) is an additive manufacturing process which can be used to repair defected components, such as blanking dies made of K340 tool steel. In this work, double tracks of K340 steel were deposited using DED process to study the processability of the alloy, and the tracks were characterized by light optical microscopy (LOM), scanning electron microscopy (SEM) and microhardness test. The results showed that near full-dense deposits can be made. However, the thermal cycle imposed by the process alters the microstructure of the material. Further investigation is required to make it possible to achieve a more homogeneous microstructure.","PeriodicalId":14483,"journal":{"name":"IOP Conference Series: Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-01DOI: 10.1088/1757-899x/1312/1/011002
All papers published in this volume have been reviewed through processes administered by the Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing.• Type of peer review: Single Anonymous• Conference submission management system: Morressier• Number of submissions received: 17• Number of submissions sent for review: 17• Number of submissions accepted: 13• Acceptance Rate (Submissions Accepted / Submissions Received × 100): 76.5• Average number of reviews per paper: 1• Total number of reviewers involved: 5• Contact person for queries:Name: Joel GuerreroEmail: joel.guerrero@unige.itAffiliation: University of Genoa, Italy.
{"title":"Peer Review Statement","authors":"","doi":"10.1088/1757-899x/1312/1/011002","DOIUrl":"https://doi.org/10.1088/1757-899x/1312/1/011002","url":null,"abstract":"All papers published in this volume have been reviewed through processes administered by the Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing.• <bold>Type of peer review</bold>: Single Anonymous• <bold>Conference submission management system</bold>: Morressier• <bold>Number of submissions received</bold>: 17• <bold>Number of submissions sent for review</bold>: 17• <bold>Number of submissions accepted</bold>: 13• <bold>Acceptance Rate (Submissions Accepted / Submissions Received × 100):</bold> 76.5• <bold>Average number of reviews per paper</bold>: 1• <bold>Total number of reviewers involved</bold>: 5• <bold>Contact person for queries</bold>:<bold>Name</bold>: Joel Guerrero<bold>Email</bold>: joel.guerrero@unige.it<bold>Affiliation</bold>: University of Genoa, Italy.","PeriodicalId":14483,"journal":{"name":"IOP Conference Series: Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-01DOI: 10.1088/1757-899x/1312/1/012008
M Vervaecke, D Fauconnier, J Degroote
A steady 2D axisymmetric fluid-structure interaction model of dry wire drawing is developed to numerically investigate the interaction between the thin lubricant film and the plastically deforming steel wire. To reduce the computational cost, a layering technique is implemented in the axially moving structure. Additionally, a no-slip condition, imposed on the implemented sliding fluid-structure interaction interface, captures accurately the physics during the plastic deformation of the wire. An Arbitrary-Langrangian-Eulerian cell-centred finite volume solution methodology using pimpleFoam has been adopted to model the fluid, while a Lagrangian cell-centred finite volume solution methodology in foam-Extend executes the structural calculations. Moreover, the Python-based in-house FSI coupling code CoCoNuT performs the coupling of the flow solver and the structural solver by using the quasi- Newton IQN-ILS technique. The stresses with corresponding displacements are shown on the structure side. On the fluid side, the focus is on the behaviour of the loads of the lubricant. Additionally, the evolution of the fluid film thickness and the lubricant flow field are validated in terms of Couette and Poiseuille flow. Finally, the presented multi-physical problem shows a converged solution with a good performance of the IQN-ILS solver.
{"title":"Fluid-structure interaction modeling of dry wire drawing by coupling OpenFOAM models of lubricant film and metal wire","authors":"M Vervaecke, D Fauconnier, J Degroote","doi":"10.1088/1757-899x/1312/1/012008","DOIUrl":"https://doi.org/10.1088/1757-899x/1312/1/012008","url":null,"abstract":"A steady 2D axisymmetric fluid-structure interaction model of dry wire drawing is developed to numerically investigate the interaction between the thin lubricant film and the plastically deforming steel wire. To reduce the computational cost, a layering technique is implemented in the axially moving structure. Additionally, a no-slip condition, imposed on the implemented sliding fluid-structure interaction interface, captures accurately the physics during the plastic deformation of the wire. An Arbitrary-Langrangian-Eulerian cell-centred finite volume solution methodology using pimpleFoam has been adopted to model the fluid, while a Lagrangian cell-centred finite volume solution methodology in foam-Extend executes the structural calculations. Moreover, the Python-based in-house FSI coupling code CoCoNuT performs the coupling of the flow solver and the structural solver by using the quasi- Newton IQN-ILS technique. The stresses with corresponding displacements are shown on the structure side. On the fluid side, the focus is on the behaviour of the loads of the lubricant. Additionally, the evolution of the fluid film thickness and the lubricant flow field are validated in terms of Couette and Poiseuille flow. Finally, the presented multi-physical problem shows a converged solution with a good performance of the IQN-ILS solver.","PeriodicalId":14483,"journal":{"name":"IOP Conference Series: Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-08-01DOI: 10.1088/1757-899x/1310/1/012016
Y Cheng, Y Otani, N Takata, A Suzuki, M Kobashi, M Kato
The laser powder bed fusion (L-PBF) processed Al–2.5Fe–2Cu (mass%) alloy exhibited a high tensile strength above 340 MPa and pronounced directional dependence. The sample exhibited a characteristic inhomogeneous microstructure (in melt-pool structure) arising from the local melting and rapid solidification in the L-PBF process. The coarsened cellular structure localized along the melt pool boundary resulted in the local soft regions affected by the melt pool structure. The local vulnerability contributed to the direction dependence of the tensile ductility of the specimen.
{"title":"Inhomogeneous deformation in melt-pool structure of Al-Fe-Cu alloy manufactured by laser powder bed fusion","authors":"Y Cheng, Y Otani, N Takata, A Suzuki, M Kobashi, M Kato","doi":"10.1088/1757-899x/1310/1/012016","DOIUrl":"https://doi.org/10.1088/1757-899x/1310/1/012016","url":null,"abstract":"The laser powder bed fusion (L-PBF) processed Al–2.5Fe–2Cu (mass%) alloy exhibited a high tensile strength above 340 MPa and pronounced directional dependence. The sample exhibited a characteristic inhomogeneous microstructure (in melt-pool structure) arising from the local melting and rapid solidification in the L-PBF process. The coarsened cellular structure localized along the melt pool boundary resulted in the local soft regions affected by the melt pool structure. The local vulnerability contributed to the direction dependence of the tensile ductility of the specimen.","PeriodicalId":14483,"journal":{"name":"IOP Conference Series: Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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