Andrzej Nycz
Oak Ridge National Laboratory
Motion (physics)Ultimate tensile strengthCharpy impact testEngineeringFerrite (iron)Control engineeringPosition (vector)Deposition (phase transition)Artificial intelligenceComposite materialTeleoperationShielding gasMartensiteMaterials scienceWeldingTeleroboticsMobile robotScale (ratio)FluoroscopeComputer visionComputer scienceTracking (particle physics)SimulationGas metal arc weldingMicrostructureRobotOrientation (computer vision)Austenite
Publications 34
#1E. Tenuta (UOIT: University of Ontario Institute of Technology)
#2Andrzej Nycz (ORNL: Oak Ridge National Laboratory)H-Index: 8
Last. M.H.A. Piro (UOIT: University of Ontario Institute of Technology)
view all 5 authors...
Abstract null null Metal Big Area Additive Manufacturing is an additive manufacturing technique based on Gas Metal Arc Welding (GMAW) with the option to use many shielding gases, and materials. The system is equipped with a dual torch design allowing for printing different materials; in our study, AISI 410 stainless steel and AWS ER70S-6 mild steel are both printed in the same component. Different print strategies were designed to highlight changes in material and mechanical properties. Deformat...
#1Andrzej Nycz (ORNL: Oak Ridge National Laboratory)H-Index: 8
#2Yousub Lee (ORNL: Oak Ridge National Laboratory)H-Index: 14
Last. Chris M. Fancher (ORNL: Oak Ridge National Laboratory)H-Index: 17
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Abstract Metal Big Area Additive Manufacturing (MBAAM), an additive manufacturing based on wire-arc process, is progressively evolving from rapid prototyping to the industrial scale production. In MBAAM, the height of printed part can easily reach eight feet, and the printing can last for hours or days. For such large printed structures, distortion and residual stress management are primary challenges in production process. Although transient thermo-mechanical simulations with very small time in...
1 CitationsSource
#1Md. R. U. Ahsan (Tennessee Technological University)H-Index: 5
#2Xuesong Fan (UT: University of Tennessee)H-Index: 4
Last. Duck Bong Kim (Tennessee Technological University)H-Index: 11
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Abstract Bimetallic additively manufactured structures (BAMSs) can replace traditionally-fabricated functionally-graded-components through fusion welding processes and can eliminate locally-deteriorated mechanical properties arising from post-processing. The present work fabricates a BAMS by sequentially depositing the austenitic stainless-steel and Inconel625 using a gas-metal-arc-welding (GMAW)-based wire + arc additive manufacturing (WAAM) system. Elemental mapping shows a smooth compositiona...
7 CitationsSource
#1Andrzej Nycz (ORNL: Oak Ridge National Laboratory)H-Index: 8
#2William G. Carter (ORNL: Oak Ridge National Laboratory)H-Index: 4
Last. Luke Meyer (ORNL: Oak Ridge National Laboratory)H-Index: 1
view all 4 authors...
#1A. N. M. Tanvir (Tennessee Technological University)H-Index: 4
#2Md. R. U. Ahsan (Tennessee Technological University)H-Index: 5
Last. Duck Bong Kim (Tennessee Technological University)H-Index: 11
view all 10 authors...
Abstract Wire + arc additive manufacturing (WAAM) is considered an innovative technology that can change the manufacturing landscape in the near future. WAAM offers the benefits of inexpensive initial system setup and a high deposition rate for fabricating medium- and large-sized parts such as die-casting tools. In this study, AISI H13 tool steel, a popular die-casting tool metal, is manufactured by cold metal transfer (CMT)-based WAAM and is then comprehensively analyzed for its microstructural...
5 CitationsSource
#1Niyanth Sridharan (ORNL: Oak Ridge National Laboratory)H-Index: 16
#2Jeffrey R. Bunn (ORNL: Oak Ridge National Laboratory)H-Index: 9
Last. S. Suresh Babu (UT: University of Tennessee)H-Index: 76
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Abstract Distortion and residual stresses are major challenges that limit the ability to fabricate large scale structures using Additive Manufacturing (AM). Researchers worldwide are evaluating techniques to induce compressive residual stress in the parts via intermittent rolling. While reasonable success has been documented, the idea of lowering the martensite start temperature to induce compressive stresses has not been evaluated in the context of AM, despite demonstrated success by the weldin...
#1Lonnie J. Love (UT: University of Tennessee)H-Index: 24
#2Brian K. Post (ORNL: Oak Ridge National Laboratory)H-Index: 14
Last. Vlastimil Kunc (ORNL: Oak Ridge National Laboratory)H-Index: 22
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Abstract Richard Feynman’s famous words, “there’s plenty of room at the bottom,” referred to the opportunities for revolutionizing the electronics industry by developing the science and technology of how to manufacture very small components (sub-micron to nanometer sized features) (Feynman, 1959) [ 1 ]. In additive manufacturing (AM), the opposite may be true: There’s plenty of room at the top. AM’s strength is in the low volume production of complex components, which is demanded in big industri...
1 CitationsSource
#1Sougata Roy (UND: University of North Dakota)H-Index: 9
#2Bishal Silwal (GS: Georgia Southern University)H-Index: 4
Last. Yukinori Yamamoto (ORNL: Oak Ridge National Laboratory)H-Index: 28
view all 7 authors...
Abstract Metal Big Area Additive Manufacturing (mBAAM) offers the potential to fabricate large scale tools at high deposition rates (15 lb/h +). 410 martensitic steel is a potential tooling material, owing to its low cost, good machinability and reasonable printability. During the mBAAM process, the shielding gas can have a significant impact on the material properties as well as the process cost. Therefore, the current study aims to understand the effect of different shielding gas mixtures on l...
#2Sougata RoyH-Index: 9
Last. S. Suresh BabuH-Index: 76
view all 6 authors...
This work investigated the linear thermal expansion properties of a multi-material specimen fabricated with Invar M93 and A36 steel. A sequence of tests was performed to investigate the viability of additively manufactured Invar M93 for lowering the coefficient of thermal expansion (CTE) in multi-material part tooling. Invar beads were additively manufactured on a steel base plate using a fiber laser system, and samples were taken from the steel, Invar, and the interface between the two material...
1 CitationsSource