Publications

Featured Publications

Unraveling the mechanics of directional coarsening in single crystal Ni-based superalloys via laser peening: Insights from experimental characterization and microstructural analysis

“Surface treatment techniques, like laser peening, enhance the longevity of Ni-based superalloy components by reinforcing their microstructure against surface-initiated damage. Recent findings suggest that these methods may also influence precipitate coarsening behavior at high temperatures, leading to rafting phenomena. This study extensively examined γ’ rafting in single crystal Ni-based superalloy CMSX-4 post laser peening and heat treatment. X-ray diffraction revealed surface compressive stresses (-400 MPa to -800 MPa), transitioning to tensile stresses at greater depths before returning to an unstressed state. Correlation with electron microscopy indicated horizontal coarsening in compressive regions and vertical coarsening in tensile regions due to misfit and residual stresses aiding diffusion…”

The effects of laser peening on the oxidation behavior of pure titanium at 750 ° C

“Pure titanium and titanium alloys are essential materials for structural applications due to their high specific strength and corrosion resistance. However, at temperatures above 550–600 °C, an unprotective oxide layer forms, promoting oxygen diffusion and degradation of material properties. Enhancement of titanium’s oxidation resistance lies in creating a stable and protective oxide layer on its surface which can be achieved through controlled manufacturing, microalloying, or post processing via surface engineering treatments. In this study, laser peening has been employed to improve the high-temperature oxidation resistance of pure titanium. Two laser-peened and two un-peened titanium specimens were subjected to oxidation…”

Effects of a Modified Heat Treatment on the Quasi-Static and Dynamic Behavior of Additively Manufactured Lattice Structures

“The flexibility of additive manufacturing techniques that produce parts from powders layer-by-layer directly from a digital model enabled the fabrication of complex lightweight lattice structures with precisely engineered mechanical properties. Herein, an investigation of the quasi-static and dynamic behavior of additively manufactured (AM) triply periodic minimal surface (TPMS) lattice structures before and after a novel post-process heat treatment step is conducted. The specimens were fabricated out of Inconel 718, a nickel–chromium-based superalloy, using a selective laser melting technique…”

High-velocity laser accelerated deposition (HVLAD): An experimental study

“A versatile solid-state cladding technique named high-velocity laser accelerated deposition (HVLAD), which is capable of creating highly uniform coverage on various surfaces, is reported here. The method is a non-thermally driven, mechanically based process that relies on laser peening (LP) technology which has been used for commercial applications for decades. In HVLAD, a high-intensity laser is used to accelerate, propel, and deposit small areas of a thin film in a controlled step-by-step manner onto a substrate. This process can be repeated until a desired thickness of material is deposited onto the substrate…”

Patents

  • I. Bargatin and ​K. Davami, “Ultralight Robust Plate Materials,” U.S. Patent Number 11,939,672, 2024.

Journal Publications

2025

  • R. Ramesh, D. Schwen, S. Neshani, K. Davami, K. Momeni, “Radiation response of inconel-Cu multimetallic layered composites: Role of alloy chemistry.” Journal of Nuclear Materials, 612, 155837 (2025).
  • A. Doroudi, S. Beck, F. Tavangarian, A. Beheshti, K. Davami, “A review of the effects of laser peening on creep properties.” The International Journal of Advanced Manufacturing Technology (2025).
  • K. Davami, R. Rowe, B. Gulledge, J. Park, A. Beheshti, A. Palazotto, F. Tavangarian, S. Beck, “Dynamic analysis of additively manufactured tensegrity structures.” International Journal of Impact Engineering, 198, 105208 (2025).
  • C. Otto, K. Davami, “Nitinol reactive oxygen assist gas laser micromachining: Demystifying the implications imposed upon pseudoelasticity and the shape memory effect for nickel-titanium alloys.” Materials Science and Engineering: A, 920, 147566 (2025).

2024

  • C. Otto, A. Doroudi, M. Vaseghi, K. Davami, “The effect of assist gas type on nitinol microsecond laser cut edges: a study on the use of oxygen, argon, nitrogen, helium, and compressed air.” Engineering Research Express, 6, 045583 (2024).
  • N. Holtham, N. Brooks, L. Hackel, K. Davami, “Investigation of High-Temperature Recovery and Recrystallization Behavior in a Single Crystal Ni-Based Superalloy Treated with Shot Peening and Laser Peening.” Metals and Materials International, 1-12 (2024).
  • K. Davami, A. Doroudi, T. Hunt, F. Tavangarian, S. Beck, A. Beheshti, “High-velocity laser accelerated deposition: Microstructure and mechanical properties of the aluminum-steel bonding interface.” Surface and Coatings Technology, 494(3), 131509 (2024).
  • Z. McClelland, K. Dunsford, B. Williams, H. Petersen, K. Davami, M. Weaver, J. Jordan, P. Allison, “Microstructure and Mechanical Behavior Comparison between Cast and Additive Friction Stir-Deposited High-Entropy Alloy Al0.35CoCrFeNi.” Materials, 17(4), 910 (2024).
  • N. Brooks, L. Brewer, A. Beheshti, K. Davami, “Tribological Study of Fe–Cr Alloys for Mechanical Refinement in a Corn Stover Biomass Environment.” Metals, 14, 448 (2024).
  • C. Otto, M. Vaseghi, K. Davami, “Nickel–Titanium Alloy Laser Micromachining: A Review of Nitinol Laser Processes and Optimization for High‐Speed Laser Cutting.” Advanced Engineering Materials, 2302112 (2024).
  • N. Sakib, S. Paul, K. Davami, K. Momeni, “Two-dimensional diamond-diamane from graphene precursor with tilt grain boundaries: Thermodynamics and kinetics.” Diamond and Related Materials, 145, 111068 (2024).
  • R. Rowe, N. Almeida, A. Prather, S. Beck, A. Palazotto, K. Davami, “Effects of a modified heat treatment on the quasi-static and dynamic behavior of additively manufactured lattice structures.” The International Journal of Advanced Manufacturing Technology, 133, 1699–1713 (2024).
  • F. Tavangarian, S. Sadeghzade, N. Fani, D. Khezrimotlagh, K. Davami, “3D-printed bioinspired spicules: Strengthening and toughening via stereolithography.” Journal of the Mechanical Behavior of Biomedical Materials, 155, 106555 (2024).
  • N. Holtham, N. Brooks, R. Rowe, L. Hackel, A. Zargaran, K. Davami, “Unraveling the mechanics of directional coarsening in single crystal Ni-based superalloys via laser peening: Insights from experimental characterization and microstructural analysis.” Journal of Alloys and Compounds, 175851 (2024).
  • Z. Brown, N. Brooks, R. Family, M. Weaver, K. Davami, “The effects of laser peening on the oxidation behavior of pure titanium at 750 °C.” Surface & Coatings Technology, 492, 131204 (2024).
  • R. Rowe, N. Holtham, P. Allison, A. Palazotto, K. Davami, “A comparison of high strain rate response and adiabatic shear band formation in additively and traditionally manufactured Inconel 718.” Materials Characterization, 207, 113506 (2024).

2023

  • M. Tripathy, K. Gaskell, J. Laureto, K. Davami, A. Beheshti, “Elevated temperature fretting wear study of additively manufactured inconel 625 superalloy.” Additive Manufacturing, 67, 103492 (2023).
  • N. Morar, N. Holtham, L. Hackel, K. Davami, M. Sharma, A. DeWald, R. Roy, “Effects of high-energy laser peening followed by pre-hot corrosion on stress relaxation, microhardness, and fatigue life and strength of single-crystal nickel CMSX-4® superalloy.” The International Journal of Advanced Manufacturing Technology, 126:4913 (2023).
  • N. Holtham, K. Davami, “Laser surface treatment of Inconel 617 for next-generation nuclear reactors: A strengthening mechanisms study.” Materials Characterization, 202, 113024 (2023).
  • K. Davami, M. Vaseghi, N. Brooks, R. Rowe, N. Holtham, T. Southers, T. Um, L. Hackel, “High-velocity laser accelerated deposition (HVLAD): An experimental study.” Surface & Coatings Technology, 466, 129638 (2023).
  • N. Brooks, M. Vaseghi, L. Hackel, K. Davami, “Microstructural and mechanical characterization of pearlitic steel after high intensity laser peening and shot peening.” Manufacturing Letters, 38, 35-39 (2023).

2022

  • N. Holtham, K. Davami, “A Review of Laser Peening Methods for Single Crystal Ni-Based Superalloys.” Metals. 12, 1414 (2022).
  • K. Davami, A. Tajyar, N. Brooks, M. Vaseghi, L. Hackel, K. Momeni, “Multi-cycling nanoindentation in additively manufactured Inconel 625 before and after laser peening,” Surface Topography: Metrology and Properties, 10.2, 025031 (2022).
  • V. Tsigkis, S. Rahman, L. Hackel, K. Davami, A. Beheshti, A. Polycarpou, “Helium tribology of Inconel 617 subjected to laser peening for high temperature nuclear reactor applications.” Applied Surface Science, 577, 151961 (2022).
  • A. Tajyar, N. Brooks, N. Holtham, R. Rowe, D. Newell, A. Palazotto, K. Davami, “Effects of a modified heat-treatment on microstructure and mechanical properties of additively manufactured Inconel 718.” Materials Science & Engineering A, 838, 142770 (2022).
  • M. Vaseghi, A. Tajyar, F. Tavangarian, A. Beheshti, K. Davami, “High temperature nanoindentation behavior of additively and traditionally manufactured Inconel 625.” Manufacturing Letters, 32, 100-103 (2022).
  • M. Munther, A. Tajyar, N. Holtham, L. Hackel, A. Beheshti, K. Davami, “An investigation into the mechanistic origin of thermal stability in thermal-microstructural-engineered additively manufactured Inconel 718.” Vacuum, 199, 110971 (2022).
  • O. Menezes, T. Roberts, G. Motta, M. Patrenos, W. McCurdy, A. Alotaibi, M. Vanderpool, M. Vaseghi, A. Beheshti, K. Davami, “Performance of additively manufactured polylactic acid (PLA) in prolonged marine environments.” Polymer Degradation and Stability, 199, 109903 (2022).
  • N. Brooks, L. Porter, M. Vaseghi, A. Palazotto, K. Davami, “Mechanical, Morphological, and Microstructural Characterization of Additively Manufactured Inconel 718 After Laser Surface Remelting at Different Scan Speeds.” Metallurgical and Materials Transactions A, 53A, 4471 (2022).
  • R. Rowe, P. Allison, A. Palazotto, K. Davami, “Adiabatic Shear Banding in Nickel and Nickel-Based Superalloys: A Review.” Metals, 12, 1879 (2022).

2021

  • R. Rowe, A. Tajyar, M. Munther, K. Johanns, P. Allison, K. Momeni, K. Davami, “Nanoscale serration characteristics of additively manufactured superalloys”, Journal of Alloys and Compounds, 850, 156723 (2021).
  • F. Tavangarian, C. Zolko, K. Davami, “Synthesis, characterization and formation mechanisms of nanocrystalline akermanite powder”, Journal of Materials Research and Technology, 11, 792-800 (2021)
  • T. Agarwal, F. Rahmani, I. Zaman, F. Gasbarri, K. Davami, M. Barzegaran, “Comprehensive design analysis of a 3D printed sensor for readiness assessment applications”, COMPEL, 40.3, 414-426 (2021)
  • F. Tavangarian, S. Sadeghzade, K. Davami, “A novel biomimetic design inspired by nested cylindrical structures of spicules”, Journal of Alloys and Compounds, 864, 158197 (2021)
  • R. Rowe, B. Gilbreath, A. Palazotto, K. Davami, “Comparison of High Strain Rate Mechanical Properties of Additively and Traditionally Manufactured Inconel 718 Samples”, AIAA Scitech 2021 Forum, 0537 (2021)
  • A. Tajyar; N. Holtham, N. Brooks; L. Hackel; V. Sherman; A. Beheshti; K. Davami, “Laser Peening Analysis of Aluminum 5083: A Finite Element Study.” Quantum Beam Sci., 5, 34 (2021).

2020

  • M. Munther, R. Rowe, M. Sharma, L. Hackel, K. Davami, “Thermal stabilization of additively manufactured superalloys through defect engineering and precipitate interactions”, Materials Science & Engineering A, 798, 140119 (2020).
  • M. Munther, T. Martin, A. Tajyar, L. Hackel, A. Beheshti, K. Davami, “Laser Shock Peening and Its Effects on Microstructure & Properties Of Additively Manufactured Metal Alloys: A Review”, Materials Research Express, 2, 022001, (2020).
  • M. Munther, T. Palma, A. Beheshti, K. Davami, “Nanomechanical Properties of Additively and Traditionally Manufactured Nickel-Chromium-Based Superalloys through Instrumented Nanoindentation”, Manufacturing Letters, 23, 39-43 (2020).
  • F. Tavangarian, C. Zolko, S. Sadeghzadeh, M. Fayed, K. Davami, “Fabrication, Mechanical Properties, and In-Vitro Behavior of Akermanite Bioceramic”, Materials, 13, 4887 (2020).

2019​

  • M. Munther, D. Moon, B. Kim, J. W. Han, K. Davami, M. Meyyappan, “Array of chemiresistors for single input multiple output (SIMO) variation-tolerant all printed gas sensor”, Sensors and Actuators B, (2019)
  • ​K. Davami, T. Palma, M. Munther, M. Sharma, L. Hackel, A. Beheshti, “Nanomechanical Characterization of Laser Peened Additively Manufactured Inconel 718 Superalloy,” Advanced Engineering Materials, (2019)
  • K. Davami, M. Mohsenizadeh, M. Mitcham, P. Damasus, Q.Williams, M. Munther, “Additively Manufactured Self-Healing Structures with Embedded Healing Agent Reservoirs,” Scientific Reports, (2019)
  • M. Munther, M. Shaygan, A. Centeneo, D. Neumaier, A. Zurutuza, K. Momeni, K. Davami, “Probing the mechanical properties of vertically-stacked ultrathin graphene/Al2O3 heterostructures,” Nanotechnology, (2019)
  • K. Davami, M. Mohsenizadeh, M. Munther, T. Palma, A. Beheshti, K. Momeni, “Dynamic energy absorption characteristics of additively-manufactured shape-recovering lattice structures,” Materials Research Express, (2019)
  • T. Palma, M. Munther, P. Damasus, S. Salari, A. Beheshti, and K. Davami, “Multiscale mechanical and tribological characterizations of additively manufactured polyamide 12 parts with different print orientations,” Journal of Manufacturing Processes, 40, pp.76-83. (2019)
  • ​M. Munther, M. Shaygan, A. Centeneo, D. Neumaier, A. Zurutuza, K. Momeni, and K. Davami, “Probing the mechanical properties of vertically-stacked ultrathin graphene/Al2O3 heterostructures,” Nanotechnology, 30, p.185703 (2019)
  • K. Davami, M. Mohsenizadeh, M. Munther, T. Palma, A. Beheshti, and K. Momeni, “Dynamic energy absorption characteristics of additively-manufactured shape-recovering lattice structures,” Materials Research Express, 6(4), p.045302 (2019).

2018

  • M. Munther, T. Palma, I.A. Angeron, S. Salari, H. Ghassemi, M. Vasefi, A. Beheshti, and K. Davami, “Microfabricated Biomimetic placoid Scale-Inspired surfaces for antifouling applications,” Applied Surface Science, 453, pp.166-172 (2018)
  • M. Munther, T. Palma, A. Beheshti, K. Davami, “Substrate-Regulated Nanoscale Friction of Graphene”, Materials Letters, 221, 54-56 (2018) 
  • M. Mohsenizadeh, F. Gasbarri, M. Munther, A. Beheshti, K. Davami, “Additively-Manufactured Lightweight Metamaterials for Energy Absorption”, Materials and Design, 139, 521-530 (2018)

2017

  • C. Lin, K. Davami, Y. Jiang, J. Cortes, M. Munther, M. Shaygan, H. Ghassemi, J. Robinson, K. Turner, I. Bargatin, “Enhancing the Stiffness of Vertical Graphene Sheets through Ion Beam Irradiation and Fluorination”, Nanotechnology, 28, 295701 (2017)

2016

  • K. Davami, Y. Jiang, J. Cortes, C. Lin, M. Shaygan, K. T. Turner, I. Bargatin, “Tuning the mechanical properties of vertical graphene sheets through atomic layer deposition.” Nanotechnology, 27, 155701 (2016).
  • K. Davami, Y. Jiang, C. Lin, J. Cortes, J. T. Robinson, K. T. Turner, I. Bargatin, “Modification of mechanical properties of vertical graphene sheets via fluorination.” RSC Advances, 6, 11161-11166 (2016).
  • M. Shaygan, K. Davami, B. Jin, T. Gemming, J-S. Lee, M. Meyyappan, “Highly sensitive photodetectors using ZnTe/ZnO core/shell nanowire field effect transistors with a tunable core/shell ratio.” Journal of Materials Chemistry. C 2016, 4, 2040-2046.
  • K. Davami, J. Cortes, N. Hong, I. Bargatin, “Vertical graphene sheets as a lightweight light absorber.” Materials Research Bulletin, 74, 226-233 (2016).

2015

  • K. Davami, L. Zhao, E. Lu, J. Cortes, C. Lin, D. E. Lilley, P. K. Purohit, I. Bargatin, “Ultralight shape-recovering plate mechanical metamaterials.” Nature Communications, 6, 10019 (2015).
  • K. Davami, M. Shaygan, and I. Bargatin, “Fabrication of Vertical Graphene-Based Nanocomposite Thin Films”, Journal of Materials Research, 30, 617–625 (2015).
  • K. Davami, M. Shaygan, N. Kheirabi, H. Ghassemi, “A Study on the Stoichiometry of One-Dimensional Nanostructures.” Advances in Condensed Matter Physics, 6, 1-7 (2015).

2014

  • M. Shaygan, K. Davami, N. Kheirabi, M. Meyyappan, G. Cuniberti, and J. S. Lee, “Single-crystalline CdTe Nanowire Field Effect Transistor as a Nanowire-based Photodetector”, Physical Chemistry Chemical Physics, 16, 22687 –22693 (2014).
  • K. Davami, M. Shaygan, N. Kheirabi, B. Mortazavi, J. S. Lee, G. Cuniberti, and M. Meyyappan, “Annealing Effect on the Thermal Conductivity of Thermoelectric ZnTe Nanowires”, Materials Letters, 135, 87– 91 (2014).
  • K. Davami, M. Shaygan, N. Kheirabi, J. Zhao, D. Kovalenko, M. H. Rümmeli, J. Opitz, G. Cuniberti, J. S. Lee, and M. Meyyeppan, “Synthesis and Characterization of Vertical Graphene on Different Substrates by Radio Frequency Plasma Enhanced Chemical Vapor Deposition”, Carbon, 72, 372 – 380 (2014).

2013

  • K. Davami, A. C. Weathers, N. Kheirabi, B. Mortazavi, M. T. Pettes, L. Shi, J. S. Lee, and M. Meyyappan, “Thermal Conductivity of ZnTe Nanowires”, Journal of Applied Physics, 114, 134314 – 134321 (2013).
  • K. Davami, J. Pohl, M. Shaygan, N. Kheirabi, H. Faryabi, J.S. Lee, and M. Meyyappan, “Growth and Characterization of CdxZn1-xTe Nanowires with Tuneable Band Gaps Grown by the Vapor-Liquid-Solid Method”, Nanoscale, 5, 932 – 935 (2013).

2012

  • H. Faryabi, K. Davami, N. Kheirabi, M. Shaygan, J. S. Lee, and M. Meyyappan, “Post-growth Modification of Electrical Properties of ZnTe Nanowires”, Chemical Physics Letters, 543, 117 – 120 (2012).
  • K. Davami, B. Mortazavi, H. M. Ghassemi, R. S. Yassar, J. S. Lee, Y. Rémond, and M. Meyyappan, “A Computational and Experimental Investigation of the Mechanical Properties of Single ZnTe Nanowires”, Nanoscale, 4, 897 – 903 (2012).
  • K. Davami, H. M. Ghassemi, R. S. Yassar, J. S. Lee, and M. Meyyappan, “Thermal Breakdown of ZnTe Nanowires”, ChemPhysChem, 13, 347 – 352 (2012).

2011

  • K. Davami, J. S. Lee, and M. Meyyappan, “Nanowires in Thermoelectric Devices”, Transactions on Electrical and Electronic Materials, 12, 6, 227 – 233 (2011).
  • K. Davami, H. M. Shah Ghassemi, R. S. Yassar, J. S. Lee, and M. Meyyappan, “In situ Observation of Morphological Change in CdTe Nano and Submicron Wires”, Nanotechnology, 22, 435204 – 435210 (2011).
  • K. Davami, D. Kang, J. S. Lee, and M. Meyyappan, “Synthesis of ZnTe Nanostructures by Vapor–Liquid–Solid Technique”, Chemical Physics Letters, 504, 62 – 66 (2011).
  • B. Mortazavi, A. Afaghi, and K. Davami, “Loading Rate Effects on Tensile Behaviour of Ag, Ni, Al, and Cu at Nano-Scale”, Strain, 47, 183 – 187 (2011).

​2008

  • M. K. Besharaty, K. Davami, and M. Shaygan, “An Investigation of Temperature’s Effect on Microstructure and Mechanical Properties of Aluminum (A360) Processed by Thixoforging”, International Journal of Mathematics and Computer in Simulation, 2, 152 – 157 (2008).