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  1. No Access

    Article

    Microstructure Prediction from Smooth Particle Hydrodynamics Process Simulations of Additive Friction Stir Deposition

    Additive friction stir deposition (AFSD) is a solid-state additive manufacturing method that exploits frictional heat generation and severe plastic deformation to achieve metallurgical bonding during layer-by-...

    N. I. Palya, K. Fraser, N. Zhu… in Metallurgical and Materials Transactions A (2024)

  2. No Access

    Article

    Microstructure Evolution in 304L Stainless Steel Cladding Produced by Additive Friction Stir Deposition

    Additive friction stir deposition (AFSD) is a solid-state additive manufacturing and repair process that provides a way to rapidly repair and/or fabricate components using similar feedstocks as the repaired su...

    B. E. T. Roper, C. M. Roper, H. M. Rao… in Metallography, Microstructure, and Analysis (2024)

  3. Article

    Open Access

    Multi-physics Approach to Predict Fatigue Behavior of High Strength Aluminum Alloy Repaired via Additive Friction Stir Deposition

    A smooth particle hydrodynamic (SPH) simulation of an additive friction stir deposition (AFSD) repair was used to inform a multi-physics approach to predict the fatigue life of a high strength aluminum alloy. ...

    N. I. Palya, K. A. Fraser, Y. Hong, N. Zhu… in Integrating Materials and Manufacturing In… (2023)

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  4. No Access

    Article

    Dynamic Behavior Characterization of Aluminum Alloy 7020 Manufactured Using the Additive Friction Stir Deposition Process

    In this research, we study the feasibility of using the solid-state additive manufacturing process, additive friction stir deposition (AFSD), as a suitable technology for creating bulk structural components us...

    M. B. Williams, L. P. Cahalan, J. J. Lopez, L. I. Perez-Andrade, R. T. Leonard III… in JOM (2023)

  5. No Access

    Article

    A computational and experimental approach to understanding material flow behavior during additive friction stir deposition (AFSD)

    In this study, a combined computational and experimental particle tracking investigation was performed for a solid-state additive manufacturing and repair process, Additive Friction Stir Deposition (AFSD). Spe...

    G. G. Stubblefield, K. A. Fraser, T. W. Robinson… in Computational Particle Mechanics (2023)

  6. No Access

    Article

    Residual Stress Distributions in AA6061 Material Produced by Additive Friction Stir Deposition

    This paper provides the first description of residual stress distributions in a 66-mm-thick AA6061 deposit produced by additive friction stir deposition (AFSD). The AFSD process is being quickly developed as a...

    N. Zhu, D. Z. Avery, Y. Chen, K. An… in Journal of Materials Engineering and Perfo… (2023)

  7. Article

    Open Access

    Ballistic Evaluation of Aluminum Alloy (AA) 7075 Plate Repaired by Additive Friction Stir Deposition Using AA7075 Feedstock

    In this work, Additive Friction Stir Deposition (AFSD) was employed for ballistic repair of AA7075-T6511 plates. After penetration with 7.62 × 51 mm FMJ rounds, the AA7075-T6511 plates were repaired by AFSD us...

    G. G. Stubblefield, M. B. Williams, M. Munther… in Journal of Dynamic Behavior of Materials (2023)

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  8. No Access

    Article

    Strain Rate Dependent Plasticity Model for Precipitate Hardened Aerospace Aluminum Alloy Produced with Solid-State Additive Manufacturing

    In this work, a strain rate dependent plasticity-damage material model is presented for precipitation hardened aluminum alloys made using Additive Friction Stir Deposition (AFS-D). The AFS-D process is a solid...

    C. J. T. Mason, D. Z. Avery, B. J. Phillips… in Journal of Dynamic Behavior of Materials (2022)

  9. No Access

    Article

    Evaluation of Grain Refinement and Mechanical Properties of Additive Friction Stir Layer Welding of AZ31 Magnesium Alloy

    This work examines the grain refinement and mechanical properties of additive friction stir layer welding (AFSLW) of a Mg Alloy. The AFSLW process was used to additively fabricate a seven-layer tall build usin...

    S. Wlodarski, D. Z. Avery, B. C. White… in Journal of Materials Engineering and Perfo… (2021)

  10. No Access

    Article

    Effect of Tensile Mean Strain on Fatigue Behavior of Al-Li Alloy 2099

    In this study, the effect of tensile mean strain on the fatigue behavior of aluminum alloy 2099-T83 was experimentally examined for the first time. In order to elucidate the effect of tensile mean strain on fa...

    B. A. Rutherford, A. R. Cisko, P. G. Allison… in Journal of Materials Engineering and Perfo… (2020)

  11. No Access

    Article

    Influence of Grain Refinement and Microstructure on Fatigue Behavior for Solid-State Additively Manufactured Al-Zn-Mg-Cu Alloy

    A solid-state severe deformation-based additive manufacturing process, additive friction stir-deposition (AFS-D), offers an innovative solution to achieve wrought-like mechanical performance from metals that a...

    D. Z. Avery, B. J. Phillips, C. J. T. Mason… in Metallurgical and Materials Transactions A (2020)

  12. No Access

    Article

    Low-Cycle Fatigue Behavior of Thin-Sheet Extruded Aluminum Alloy

    In this work, we investigate a novel testing method for fatigue testing of a thin sheet under fully reversed conditions. Specifically, the fatigue behavior of thin-plate AA6082-T6 was characterized by laminati...

    D. Z. Avery, W. T. King, P. G. Allison… in Journal of Failure Analysis and Prevention (2020)

  13. No Access

    Article

    Plasticity-Damage Modeling of Strain Rate and Temperature Dependence of Aluminum Alloy 7075-T651

    This is the first study to correlate the observed damage evolution of ambient (298 K) and elevated (480 K) temperatures of quasi-static and dynamically-loaded wrought aluminum alloy 7075 (AA7075) to capture th...

    C. J. T. Mason, P. G. Allison, O. L. Rodriguez… in Journal of Dynamic Behavior of Materials (2019)

  14. No Access

    Chapter and Conference Paper

    Microstructure and Mechanical Properties of High Shear Material Deposition of Rare Earth Magnesium Alloys WE43

    In this work, microstructural and are investigated for rare earth , , manufactured via a deposition process. The unique solid-state manufacturing process deposits feedstock via a hollow nonconsumable r...

    Z. McClelland, D. Z. Avery, M. B. Williams, C. J. T. Mason… in Magnesium Technology 2019 (2019)

  15. No Access

    Article

    Fatigue Behavior of Solid-State Additive Manufactured Inconel 625

    A transformative hybrid solid-state additive manufacturing process provides a new path to fabricate or repair components with wrought-like performance. In this work, the fatigue behavior of Inconel 625 (IN625)...

    D. Z. Avery, O. G. Rivera, C. J. T. Mason, B. J. Phillips, J. B. Jordon, J. Su… in JOM (2018)

  16. No Access

    Article

    Effect of Heat Exposure on the Fatigue Properties of AA7050 Friction Stir Welds

    This work examines the effect of heat exposure on the subsequent monotonic and fatigue properties of friction stir-welded AA7050. Mechanical characterization tests were conducted on friction stir-welded specim...

    B. C. White, R. I. Rodriguez, A. Cisko… in Journal of Materials Engineering and Perfo… (2018)

  17. No Access

    Article

    Split Hopkinson Pressure Bar Graphical Analysis Tool

    An open-source Split Hopkinson Pressure Bar graphical data analysis tool has been developed. Written in Matlab®, the code can be freely distributed either as an executable binary or editable Matlab files. Begi...

    D.K. Francis, W.R. Whittington, W.B. Lawrimore II, P.G. Allison… in Experimental Mechanics (2017)

  18. No Access

    Chapter

    Interrupted Quasi-static and Dynamic Tensile Experiments of Fully Annealed 301 Stainless Steel

    This research examined the evolving microstructure of quasi-static and dynamically loaded fully annealed metastable 301 austenitic stainless steel (SS). Experiments were performed to an interrupted strain valu...

    O. G. Rivera, Z. McClelland, P. Rivera-Soto, W. R. Whittington… in EPD Congress 2016 (2016)

  19. No Access

    Chapter

    Ultrasonic Processing of 6061-Based Nanocomposites for High Performance Applications

    Previously studies show that microstructure and mechanical properties of a cast component can be considerably improved when ceramic nanoparticles are used as a reinforcement to form a metal-matrix-nano-composi...

    S. Jia, P. G. Allison, T. W. Rushing… in Advances in the Science and Engineering of… (2016)

  20. No Access

    Article

    A Fatigue Model for Discontinuous Particulate-Reinforced Aluminum Alloy Composite: Influence of Microstructure

    In this paper, the use of a microstructure-sensitive fatigue model is put forth for the analysis of discontinuously reinforced aluminum alloy metal matrix composite. The fatigue model was used for a ceramic pa...

    R. R. McCullough, J. B. Jordon… in Journal of Materials Engineering and Perfo… (2014)

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