Dr. Adam Pilchak

Mechanical Engineering

Current Courses

Education History

  • BS Materials Scence and Engineering, Michigan State University
  • MS Materials Scence and Engineering, The Ohio State University
  • PhD Materials Scence and Engineering, The Ohio State University

Work Experience

Senior Materials Research Engineer and Turbine Engine Sustainment Lead, Air Force Research Laboratory

Publications

1. Biswaranjan Dash, Rahul Jangid, Shalini Roy Koneru, Adam Pilchak, Dipankar Banerjee (2019): The formation of α at triple junctions of parent β phase in titanium alloys, Philosophical Magazine, DOI: 10.1080/14786435.2019.1566798
2. V. Sinha, A.L. Pilchak, S.K. Jha, W.J. Porter III, R. John, and J.M. Larsen: Correlating scatter in fatigue life with fracture mechanisms in forged Ti-6242Si alloy, Metall. Mater. Trans. A., Metall. Mater. Trans. A, vol 49 (2018) pp. 1061-1078.
V. Miller, C.J. Szczepanski, S.L. Semiatin, and A.L. Pilchak: Optimization of VPSC Model Parameters for Two-Phase Titanium Alloys: Flow Stress versus Orientation Distribution Function Metrics, Metall. Mater. Trans. A., vol. 49 (2018) pp. 3624-3636.
3. G. Hommer, A.L. Pilchak, and A. Stebner: Normalized resolved shear stress calculations for single crystals
subjected to multiaxial loading, Materialia, vol. 2 (2018) pp. 53-57.
4. R. Ma, A.L. Pilchak, S.L. Semiatin, T.J. Truster: Modeling the evolution of Microtextured regions
during alpha/beta processing using the crystal plasticity finite element method, Int. J. Plasticity, v.
107 (2018) pp. 189-206.
5. S.K. Jha, R.A. Brockman, R.M. Hoffman, V. Sinha, A.L. Pilchak, W.J. Porter III, D.J. Buchanan,
J.M. Larsen, and R. John: A Data Analytics Approach to Discovering Unique Microstructural
Configurations Susceptible to Fatigue, JOM, 2018. https://doi.org/10.1007/s11837-018-2881-5
6. O.N. Senkov, A.L Pilchak, and S.L. Semiatin: Effect of Cold Deformation and Annealing on the Microstructure and Tensile Properties of a HfNbTaTiZr Refractory High Entropy Alloy, Metall.
Mater. Trans. A., https://doi.org/10.1007/s11661-018-4646-8
7. A.L. Pilchak, G.A. Sargent, and S.L. Semiatin: Early stages of microstructure and texture evolution during beta annealing of Ti-6Al-4V, Metall. Mater. Trans. A, 49 (2018) pp. 908-919.
online – open access, https://link.springer.com/article/10.1007/s11661-017-4444-8
8. V.M. Miller, E.J. Payton, and A.L. Pilchak: Reduction in the thermodynamic nucleation barrier via the heteroepitaxial recrystallization mechanism, Scripta Materialia, 136 (2017) pp. 129-131.
9. T.M. Butler, C.A. Brice, W.A. Tayon, S.L. Semiatin, and A.L. Pilchak: Evolution of texture from a single crystal Ti-6Al-4V substrate during electron beam directed energy deposition, Metall. Mater. Trans. A. 48 (2017) pp. 4441-4446.
10. V. Sinha, S.K. Jha, A.L. Pilchak, W.J. Porter III, R. John, and J.M. Larsen: Quantitative Characterization of Microscale Fracture Features in Titanium Alloys, Metallog. Microstruct. Anal. 6 (2017) pp. 261-269.
11. O.N. Senkov, J.K. Jensen, A.L. Pilchak, D.B. Miracle, and H.L. Fraser: Compositional variation effects on the microstructure and properties of a refractory high-entropy superalloy AlMo0.5NbTa0.5TiZr, Materials and Design, 139 (2018) pp. 498-511.
12. M.R. Cherry, S. Sathish, R.D. Mooers, A.L. Pilchak, and Ramana Grandhi: Modeling of the Change of Impedance of an Eddy Current Probe Due to Small Changes in Host Conductivity, IEEE Transactions of Magnetics (2017) vol. 53, No. 5, paper 6201210.
13. D. Ozturk, A.L. Pilchak and S. Ghosh: Experimentally Validated Dwell Fatigue Crack Nucleation Model for alpha-Titanium Alloys, Scripta Materialia, vol. 127, pp. 15-18, 2017.
14. A. Venkataraman, P.A. Shade, R. Adebisi, S. Sathish, A.L. Pilchak, G.B. Viswanathan, M.C. Brandes, M.J. Mills, and M.D. Sangid: Study of structure and deformation pathways in Ti-7Al using atomistic simulations, experiments and characterization, Metall. Mater. Trans. A., vol. 48 (2017) pp. 2222-2236.
15. A.L. Pilchak, J. Shank, J.C. Tucker, S. Srivatsa, P.N. Fagin, and S.L. Semiatin: A dataset for the development, verification, and validation of microstructure-sensitive process models for near-alpha titanium alloys, Integrating Materials and Manufacturing Innovation, 5:14, 2016, doi: 10.1186/s40192-016-0056-1; http://www.immijournal.com/content/5/1/14
16. K. Chatterjee, A. Venkataraman, T. Garbaciak, J. Rotella, M.D. Sangid, A.J. Beaudoin, P. Kenesei, J- S. Park, and A.L. Pilchak: Study of grain-level deformation and residual stresses in Ti-7Al under combined bending and tension using high energy diffraction microscopy (HEDM), Int. J. Solids and Structures, vol. 94-95, pp. 35-49, 2016.
17. D.P. Satko, J.B. Shaffer, J.S. Tiley, S.L. Semiatin, A.L. Pilchak, S.R. Kalidindi, Y. Kosaka, M.G. Glavicic, and A.A. Salem: Effect of microstructure on oxygen rich layer evolution and its impact on fatigue life during high-temperature application of α/β titanium, Acta Materialia, vol. 107, pp. 377- 389, 2016.
18. O.N. Senkov, D. Isheim, D.N. Seidman, and A.L. Pilchak: Development of a Refractory High Entropy Superalloy, Entropy, vol. 18, no. 102, pp. 1-13, 2016.
19. R.W. Fonda, K.E. Knipling and A.L. Pilchak: Thermal Stir Welds in Titanium, Met. Mater. Trans. A., 2016, vol. 47, no. 1, pp. 360-367.
20. I.G. Dastidar, V. Kademi, T.R. Bieler, A.L. Pilchak, M.A. Crimp and C.J. Boehlert: The tensile and creep deformation behavior of Ti-8Al-1Mo-1V(wt%), Mat. Sci. Eng. A, 2015, vol. 636, pp. 289-300.
21. S.L. Semiatin, J.M. Shank, A.R. Shiveley, W.M. Sauber, E.F. Gaussa and A.L. Pilchak: The effect of
forging variables on the supersolvus heat-treatment response of powder-metallurgy nickel-base
superalloys, Metall. Mater. Trans. A., 2014, vol. 45, pp. 6231-6251.
22. A.L. Pilchak, J. Li and S.I. Rokhlin: Quantitative Comparison of Microtexture in Near-Alpha
Titanium Measured by Ultrasonic Scattering and Electron Backscatter Diffraction, Metall. Mater.
Trans. A., 45A, 2014, pp. 4679-4697.
23. S.L. Semiatin, J.M. Shank, W.M. Saurber, A.L. Pilchak, D.L. Ballard, F. Zhang, and B. Gleeson:
Alloying-Element Loss During High-Temperature Processing of a Nickel-Base Superalloy: Metall.
Mater. Trans. A, 45A, 2014, pp. 962-979.
24. A.L. Pilchak: A simple model to account for the role of microtexture on fatigue and dwell fatigue
lifetimes of titanium alloys, Scripta Materialia, 74, 2014, pp. 68-71.
25. J.S. Tiley, A.R. Shiveley, A.L. Pilchak, P.A. Shade and M.A. Groeber: 3D Reconstruction of Prior β
Grains in Friction Stir Processed Ti-6Al-4V, Journal of Microscopy, vol. 255, iss. 2, 2014, pp. 71-77.

26. J. Tiley, J. Shaffer, A. Shiveley, A. Pilchak, A. Salem, The effect of lath orientations on oxygen ingress in titanium alloys, Metall. Mater. Trans. A 45 (2014) pp. 1041-1048.
27. J.S. Tiley, K.W. Shiveley, II, A.R. Shiveley, and A.L. Pilchak: Controlled Rotation and Collection of Electron Backscattered Diffraction Patterns from Complex Test Samples, Advanced Materials & Processing (AM&P) vol. 171, no. 10 (2013): 15-17.
28. A.L. Pilchak, C.J. Szczepanski, J.A. Shaffer, A.A. and S.L. Semiatin: Characterization of Microstructure, Texture, and Microtexture in Near-Alpha Titanium Mill Products, Metall. Mater. Trans. A, 44A, 2013, pp. 4881-4890.
29. J. Kwon, M.C. Brandes, P. Sudharshan Phani, A.L. Pilchak, Y.F. Gao, E.P. George, G.M. Pharr and M.J. Mills: Characterization of deformation anisotropies in an alpha-Ti alloy by nanoindentation and electron microscopy, Acta Materialia, vol. 61, iss. 13, 2013, pp. 4743-4756.
30. S.L. Semiatin, K.T. Kinsel, A.L. Pilchak and G.A. Sargent: Effect of Process Variables on Transformation-Texture Development in Ti-6Al-4V Sheet Following Beta Heat Treatment, Metall. Mater. Trans. A., 2013, vol. 44, no. 8, pp. 3852-3865.
31. A.L. Pilchak and T.F. Broderick: Evidence of a Massive Transformation in a Ti-6Al-4V Solid-State Weld?, Journal of Metals, 2013, vol. 65, iss. 5, pp. 636-642.
32. A.L. Pilchak: Fatigue crack growth rates in alpha titanium: faceted versus striation growth, Scripta Materialia, 2013, 68, pp. 277-280.
33. A.L. Pilchak, A.R. Shiveley, P.A. Shade, J.S. Tiley and D.L. Ballard: Using cross-correlation for automated stitching of two-dimensional multi-tile electron backscatter diffraction data, Journal of Microscopy, 2012, Vol. 248, Pt. 2, pp. 172-186.
34. A.L. Pilchak, W.J. Porter, R. John: Room temperature fracture processes of a near-alpha titanium alloy following elevated temperature exposure, J. Mater. Sci., vol. 47, 2012, pp. 7235-7253. (Cahn Prize - Best Paper - Journal of Materials Science, 2012)
35. G.A. Sargent, K.T. Kinsel, A.L. Pilchak, A.A. Salem and S.L. Semiatin: Variant selection during cooling following beta annealing of Ti-6Al-4V ingot material, Metall. Mater. Trans. A., 43A, 2012, pp. 3570-3585.
36. D. Banerjee, A.L. Pilchak and J.C. Williams: Processing, structure, texture and microtexture in titanium alloys, in Proc. Int. Conf. on Advances in Metallic Materials and Manufacturing Processes for Strategic Sectors (ICAMPS), Mater. Sci. Forum, vol. 710, 2012, pp. 66-84.
37. *A.L. Pilchak, W. Liu and J.C. Williams: Progress in Understanding the Fatigue Behavior of Ti Alloys, in Proc. Int. Conf. on Advances in Metallic Materials and Manufacturing Processes for Strategic Sectors (ICAMPS), Mater. Sci. Forum, vol. 710, 2012, pp. 85-92.
38. A.R. Shiveley, P.A. Shade, A.L. Pilchak, J.S. Tiley, R. Kerns, A novel method for acquiring large scale automated scanning electron microscopy data, Journal of Microscopy, vol. 244, iss. 2, 2011, pp. 181-186.
39. A.L. Pilchak, A.R. Shiveley, J.S. Tiley, D.L. Ballard: AnyStitch: An automated tool for combining electron backscatter diffraction data sets, Journal of Microscopy, vol. 244, iss. 1, 2011, pp. 38-44.
40. R.A. Brockman, A.L. Pilchak, W.J. Porter and R. John: Estimation of grain boundary diffusivity in near-alpha titanium polycrystals, Scripta Materialia, vol. 65, 2011, pp. 513-515.
41. A. Bhattacharjee, A.L. Pilchak, O. Lobkis, J.W. Foltz, S.I. Rokhlin, J.C. Williams: Correlating ultrasonic attenuation with microtexture in a near alpha titanium alloy, Metall. Mater. Trans. A., vol. 42, no. 8, 2011, pp. 2358-2372.
42. M. Atapour, A.L. Pilchak, G.S. Frankel, J.C. Williams: Corrosion behavior of β titanium alloys for biomedical applications, Materials Science and Engineering: C, vol. 31, iss. 5, 2011, pp. 885-891.
43. A.L. Pilchak and J.C. Williams: The effect of friction stir processing on the mechanical properties of investment cast and hot isostatically pressed Ti-6Al-4V, Metall. Mater. Trans. A, vol. 42, no. 6, 2011, pp. 1630-1645.
44. A.L. Pilchak, D.L. Ballard, D.S. Weaver, and S.L. Semiatin: Microstructure and texture evolution during hot-pack rolling of nickel-base superalloys to thin sheet and foil, Met. Mater. Trans. A., vol. 42, no. 4, 2011, pp. 1089-1102.

45. M. Atapour, A.L. Pilchak, M. Shamanian and M.H. Fathi: Corrosion behavior of Ti-8Al-1Mo-1V alloy compared to Ti-6Al-4V, Materials & Design, vol. 32, iss. 3, 2011, pp. 1692-1696.
46. A.L. Pilchak and J.C. Williams, Observations of facet formation in near-α titanium and comments on the role of hydrogen, Metall. Mater. Trans. A, vol. 42, no. 4, 2011, pp. 1000-1027.
47. A.L. Pilchak and J.C. Williams: Microstructure and texture evolution during friction stir processing of fully lamellar Ti-6Al-4V, Metall. Mater. Trans. A, 42, 2011, pp. 773-794.
48. A.L. Pilchak, W. Tang, H. Sahiner, A.P. Reynolds and J.C. Williams: Microstructure evolution during friction stir welding of mill-annealed Ti-6Al-4V, Metall. Mater. Trans. A., vol. 42, no. 3, 2011, pp. 745-762.
49. D.L. Ballard and A.L. Pilchak, The Use of Precious-metal-modified Nickel-based Superalloys for Thin Gage Applications, JOM, October 2010, pp. 45-47.
50. A.L. Pilchak, A.H. Young and J.C. Williams, Stress corrosion cracking facet crystallography of Ti- 8Al-1Mo-1V, Corrosion Science, 52, 2010, pp. 3287-3296.
51. M. Atapour, A.L. Pilchak, G.S. Frankel, and J.C. Williams: Corrosion Behavior of Friction Stir Processed and Gas Tungsten Arc Welded Ti-6Al-4V, Metall. Mater. Trans. A., 2010, vol. 41, pp. 2318-2327.
52. M. Atapour, A.L. Pilchak, G.S. Frankel, and J.C. Williams: Corrosion Behavior of Investment Cast and Friction Stir Processed Ti-6Al-4V, Corrosion Science, 52, 2010, p. 3062-3069.
53. M. Atapour, A.L. Pilchak, G.S. Frankel, J.C. Williams, M.H. Fathi, and M. Shamanian: Corrosion Behavior of Ti-6Al-4V with Different Thermomechanical Treatments and Microstructures, Corrosion, 2010, vol. 66, no. 6, pp. 06004-1 – 06004-9
54. D.L. Ballard, D.S. Weaver, A.L. Pilchak and S.L. Semiatin: Hot Working of Platinum Group Metal- Modified Ni-Base Superalloys for Thermal Protection System Applications, J. Eur. Cer. Soc., 30, 2010, p. 2305-2312.
55. A.L. Pilchak and J.C. Williams: Crystallography of fluted fracture in near-α titanium alloys, Metallurgical and Materials Transactions A, 41A, 2010, p. 22-25.
56. A.L. Pilchak, R.E.A. Williams and J.C. Williams: Crystallography of fatigue crack initiation and growth in fully lamellar Ti-6Al-4V, Metallurgical and Materials Transactions A, 41A, 2010, p. 106- 124. (Winner: Henry Marion Howe – Best Paper – ASM, 2011 and Champion H. Mathewson - Best Paper - TMS, 2012)
57. A.L. Pilchak and J.C. Williams: The effect of yttrium on the fatigue behavior of investment cast and wrought Ti-6Al-4V, Metall. Mater. Trans. A, 40A, 2009, p. 2603-2615.
58. A.L. Pilchak, A. Bhattacharjee, A.H. Rosenberger, J.C. Williams: Low ΔK faceted crack growth in titanium alloys. International Journal of Fatigue, 2009, 31, p. 989-994.
59. J.V. Bernier, J.S. Park, A.L. Pilchak. M.G. Glavicic and M.P. Miller: Measuring Stress Distributions in Ti-6Al-4V Using Synchrotron X-ray Diffraction, Metallurgical and Material Transactions A, 39(13), 2008, p. 3120-3133. (Winner: Henry Marion Howe – Best Paper – ASM, 2009)
60. *A.L. Pilchak, M.C. Juhas and J.C. Williams: A Comparison of Friction Stir Processing of Investment Cast and Mill-annealed Ti-6Al-4V, Welding in the World. Vol. 52, no 9/10 (2008) – Research Supplement.
61. *Z.Y. Ma, A.L. Pilchak, M.C. Juhas and J.C. Williams: Microstructural refinement and property enhancement of cast light alloys via friction stir processing, Scripta Materialia Viewpoint Set 43, vol. 58, iss. 5, 361-366, 2008.
62. A.L. Pilchak, D.M. Norfleet, M.C. Juhas, and J.C. Williams: Friction Stir Processing of Investment Cast Ti-6Al-4V: Microstructure and Properties, in Materials Behavior Far From Equilibrium, Metall. Mater. Trans. A, 39A, 1519-1524, 2008.
63. A.L. Pilchak, F. Ren, E.D. Case, E.J. Timm, H.J. Schock, C.I. Wu and T.P. Hogan: Characterization of dry milled powders of LAST (lead-antimony-silver-tellurium) thermoelectric material, Philosophical Magazine, Vol. 87, No. 29 (2007) pp. 4567-4591.
64. A.L. Pilchak, M.C. Juhas and J.C. Williams: Observations of Tool-Workpiece Interactions During Friction Stir Processing of Ti-6Al-4V. Metall. Mater. Trans. A. Vol. 38 No. 2 (2007) pp. 435-437.

65. A.L. Pilchak, M.C. Juhas and J.C. Williams: Microstructural Changes Due to Friction Stir Processing of Investment Cast Ti-6Al-4V. Metall. Mater. Trans. A. Vol. 38 No. 2 (2007) pp. 401-408.
66. A.L. Pilchak, T. Uchiyama and D. Liu: Low Velocity Impact Response of Small Angle Laminated Composites. AIAA Journal, Volume 44, Number 12, 2006, p. 3080-3087.

Honors and Awards

  • Jaap Schijve Award, Delft University of Technology (2019)
  • Presidential Early Career Award for Scientists and Engineers (PECASE) (2017)
  • Air Force Early Career Award, AFRL/AFOSR (2015)

Professional Organizations

TMS