Marek Dollár

Dr. Marek Dollar, Dean


201C Benton Hall
(513) 529-0701

Research Interests

  • Synthesis, characterization and properties of nanocrystalline materials
  • Processing, designing, and characterization of ordered intermetallic compounds
  • Precipitation and strain hardening mechanisms in Ni-Mo-Cr alloys
  • Advanced aluminum alloys for aerospace applications


Ph. D., Engineering Science (specialty: Physics of Metals and Physical Metallurgy)
AGH University of Science and Technology, Krakow, Poland

B.S./M.S., Engineering Science (specialty: Applied Nuclear Physics)
AGH University of Science and Technology, Krakow, Poland

Outline of Career

Miami University, Oxford, OH

  • Dean and Professor of Engineering Science, College of Engineering and Computing (2013–2020)
  • Dean and Professor of Engineering Science, School of Engineering and Applied Science (2000–2013)

Illinois Institute of Technology, Chicago, IL

  • Department of Mechanical, Materials, and Aerospace Engineering
    • Research Professor (2000-2005)
    • Professor and Chairman (1995-2000)
  • Department of Metallurgical and Materials Engineering
    • Professor (1994-1995)
    • Associate Professor with Tenure (1991-1994)
    • Visiting Assistant Professor (1988-1991)

AGH University of Science and Technology, Krakow, Poland

  • Associate Professor, Department of Metallurgy and Materials Science (1988)

Carnegie-Mellon University, Pittsburgh, Pennsylvania

  • Senior Research Associate, Department of Materials Science and Engineering (1985-87)

Saarland University, Sarrbruechen, Germany

  • Alexander Von Humboldt Fellow, Department of Materials Science (1984-85)

AGH University of Science and Technology, Krakow, Poland

  • Assistant Professor, Department of Metallurgy and Materials Science (1982-83)
  • Graduate Assistant, Department of Metallurgy and Materials Science (1978-81)
  • Research Assistant (1976-77), Nuclear Physics Institute, Krakow, Poland

Selected Honors and Awards

  • Alexander von Humboldt Foundation Fellowship, 1984
  • Doctor of Science Habilitate (D.Sc.), 1989 (the highest scientific degree in many European countries conferred for: "outstanding teaching and research achievements in science and engineering")
  • Chairman of the Board, Polish Institute of Science and Culture - Polish University Abroad (1990-93)
  • The Cavalier’s Cross of the Order of Merit of the Republic of Poland (1998) (presented in recognition of exceptional contributions to international cooperation)
  • ASM International (formerly American Society for Materials) Fellow (1998)
  • President of the Republic of Poland Professor of Engineering Science Award (2000)
  • Board of Review of the Metallurgical Transactions A (1993 – 1996), Editorial Board: Brazilian Journal of Materials Science & Engineering (1997 - present), Editorial Board, Journal of Achievements in Materials and Manufacturing Engineering (2004–present)
  • Inducted to the Order of the Engineer (1999)
  • Chairman of the National Panel: “ABET 2000, First Experiences,” Gordon Conference on Materials Science and Engineering (2000)
  • National Panel on the Future of Engineering Education (2003-2006)
  • Honorary Consul of the Republic of Poland in the U.S. (2004-present)
  • Advisory Council of World Affairs Council / Global Center of Greater Cincinnati (2007-2012)
  • Inducted to Tau Beta Pi Engineering Honors Society as Eminent Engineer (2009)
  • Pangea Alliance Outstanding Pole Abroad award - category: Science (2013)
  • Board of Directors, Regional STEM Initiative (2014–present)

Teaching Highlights

General Teaching Interests

  • Materials Science and Engineering
  • Mechanical Behavior of Materials

Courses Taught

  • Undergraduate level: Fundamentals of Crystalline Solids, Engineering Materials and Design, Mechanical Metallurgy, Physical Metallurgy I, Physical Metallurgy II, Advanced Metallographic Techniques, Microstructural Analysis of Materials, Materials in Manufacturing, Mechanical Behavior of Materials, Physics of Solids
  • Graduate level: Crystal Defect Theory, Dislocations and Strengthening Mechanisms, Problems in High -Temperature Materials, Strengthening Mechanisms, Microstructural Analysis of Materials, Transmission Electron Microscopy

Major Research Accomplishments

  • The development of a theory of grain boundary strengthening which explains the effect of strain on k and s0 parameters of the Hall-Petch equation (see, e.g., list of selected publications below, position [1], 1982).
  • First experimental proof that the structure of grain boundaries affects their efficiency as point defect sinks or sources ([5], 1986, frequently quoted publication); before 1985 the grain boundaries, both low and high angle, were believed to be equally efficient point defect sinks/sources.
  • A successful modeling of the results of a study of the transient liquid phase (TLP) bonding ([7], 1988); the modeling has been quoted in literally every paper on the TLP
  • Rare experimental proof that hydrogen affects the development of dislocation structure during plastic deformation ([9], 1988).
  • The most important outcomes of Dr. Dollar’s research group’s extensive studies on NiAl-base intermetallics are: demonstration of the feasibility of producing bulk NiAl- based alloys by mechanical alloying (MA) and their potential for high temperature structural applications, and recognition of several scientifically important microstructural effects in this class of materials ([17], 1993).
  • Successful processing a fully dense, crack-free nanocrystalline intermetallic NiAl (grain size about 5 nm), exhibiting room temperature ductility; the first evidence of R.T. ductility in a nanocrystalline intermetallic compound ([20,23], 1997/98). Contributions to improved understanding of inherent limitations of strength and ductility of nanocrystalline materials.

Selected Publications

  • M.Dollár and S.Gorczyca, “The Effect of Grain Size on Polycrystal Hardening”, Scripta Metall., 16 (1982) 901
  • M.Dollár and S.Gorczyca, “The Influence of Grain Size on the Work Hardening of an Austenitic Stainless Steel”, Mat. Sci. & Eng., 64 (1984) L27
  • M.Dollár and H.Gleiter, “Point Defect Annihilation at Grain Boundaries in Gold”, Scripta Metall., 19 (1985) 481
  • M.Dollár and H.Gleiter, “Dislocation Annealing in Interfaces between Crystals and Glasses”, Scripta Metall., 20 (1986) 275
  • M.Dollár, “Grain Boundaries as Sinks or Sources for Point Defects”, Scripta Metall., 20 (1986) 1059
  • M.Dollár and A.W.Thompson, “The Effect of Grain Size and Strain on the Tensile Flow Stress of Quenched Aluminum”, Acta Metall., 35 (1987) 227
  • K.Tuah-Poku, M.Dollár, and T.B.Massalski, “A Study of Transient Liquid Phase Bonding applied to an Ag/Cu/Ag Sandwich Joint”, Metall.Trans., 19A (1988) 675
  • M.Dollár, I.M.Bernstein, and A.W.Thompson, “Influence of Deformation Substructure on Flow and Fracture of a Fully Pearlitic Steel”, Acta Metall., 36 (1988) 311
  • M.Dollár and I.M.Bernstein, “The Effect of Hydrogen on Deformation Substructure, Flow and Fracture in a Nickel-Base, Single-Crystal Superalloy”, Acta Metall., 36 (1988) 2369
  • O.E.Chikezie, S.Gorczyca, and M.Dollár, “A New Approach to Flow Stress – Grain Size Relationship”, Archives of Metallurgy, 35 (1990) 15
  • S.Dymek, M.Dollár, and D.Klarstrom, “Strain Hardening Mechanisms in Haynes Alloy 242″, Scripta Met., 25 (1991) 865
  • C.P.You, M.Dollár, A.W.Thompson, and I.M.Bernstein, “Microstructure – Property Relationship in a Particulate-Reinforced Aluminum Composite”, Metall. Trans., 22A (1991) 2445
  • M.Dollár, I.M.Bernstein, A.Domnanovic, W.Kromp, and H.Pinczolits, “Hydrogen Effects on Low-Cycle Fatigue of the Single-Crystal Nickel-Base Superalloy CMSX-2″, Metall. Trans., 22A (1991) 2597
  • S.Dymek, M.Dollár, P.Nash, and S.J.Hwang, “Deformation Mechanisms and Ductility of Mechanically Alloyed NiAl”, Mater. Sci. & Eng., A152 (1992) 160
  • M.Dollár, S.Dymek, P.Nash, and S.J.Hwang, “The Occurrence of <110> Slip in NiAl”, Scripta Metall. & Mat., 26 (1992) 29
  • S.Dymek, S.J.Hwang, M.Dollár, J.S. Kallend, and P.Nash, “Microstructure and Texture in Hot-extruded NiAl”, Scripta Metall. & Mat., 27 (1992) 161
  • M.Dollár, S.Dymek, P.Nash, and S.J.Hwang, “The Role of Microstructure in Mechanically Alloyed NiAl”, Metall. Trans., 24A (1993) 1993
  • S.Dymek, M.Dollár, and S.Gorczyca, “Status and Prognosis for High-Temperature Structural Materials”, Metallurgist, 61 (1994) 15
  • S.Suh, M.Dollár, P.Nash, “Creep in Mechanically Alloyed NiAl”, J. Mater. Sci. & Eng., A 192/93 (1995) 691
  • M.S.Choudry, J.A.Eastman, R.J.DiMelfi and M.Dollár, “Evidence of Room Temperature Ductility in Nanocrystalline NiAl using Biaxial Disk Bend Testing”, Scripta Materialia, 37 (1997) 843
  • S.Dymek, M.Dollár and K. Leonard, “Synthesis and Characterization of Mechanically Alloyed Nb3Al-Base Alloys”, Materials Sci. & Eng.A, 239-240 (1997) 507
  • H.Choo, P.Nash and M.Dollár, “Mechanical Properties of NiAl-AlN-Al2O3 Composites”, Materials Sci. & Eng. A, 239-240 (1997) 464
  • M.Dollár, M.Choudry and J.Eastman, “Synthesis, Characterization and Mechanical Properties of Nanocrystalline NiAl”, Materials Engineering, 19 (1998) 803
  • S.Dymek, M.Dollár, K.Leonard and M.Wrobel, “Processing and Mechanical Properties of Mechanically Alloyed Niobium-rich Nb-Al Alloys”, Materials Engineering, 19 (1998) 1147
  • M.S.Choudry, M.Dollár and J.A.Eastman, “Nanocrystalline Intermetallics – Processing, Characterization and Mechanical Properties”, Materials Sci. & Eng., A256 (1998) 25
  • S.Dymek, M.Dollár and M.Wrobel, “Environmentally Assisted Dynamic Embrittlement in a Long Range Ordered Ni-Mo-Cr Alloy”, Scripta Materialia, 43 (2000) 343
  • S.Dymek, M.Dollár and M.Wróbel, “Transmisssion Electron Microscopy Studies as a Tool Tailoring a Ni-Mo-Cr Alloy Microstructure to Optimize Properties”, Metallurgy and Foundry Engineering, 26 (2000) 221
  • S.Dymek, M.Dollár, M.Farooqi, “Optimization of Mechanical Properties of a Ni – Mo – Cr Alloy by Structural Modifications Induced by Changes in Heat Treatment”, Materials Science and Engineering, 319-321 (2001) 284
  • S.Dymek, M.Wróbel, M.Blicharski and M.Dollár, “Mechanical Alloying of a Nb-24V-18Al”, Materials Engineering, 22 (2001) 37
  • S.Dymek and M.Dollár, “TEM Investigation of Age-Hardenable Al 2519 Alloy Subjected to Stress Corrosion Cracking”, Materials Chemistry and Physics, 81 (2003) 286
  • M.Wrobel, S.Dymek, M.Dollár and M.Blicharski, “Deformation Mechanisms in an Age-hardenable Ni-Mo-Cr alloy Subjected to Cold Rolling”, Materials Review, September Issue (2003) 807
  • S.Dymek and M.Dollár, “TEM Investigation of Age-Hardenable Al 2519 Alloy Subjected to Stress Corrosion Cracking”, Materials Chemistry and Physics, 81 (2003) 286
  • M.Dollár, A.Dollár, “On the strength and ductility of nanocrystalline materials”, Journal of Materials Processing Technology, 157-158 (2004) 491
  • S.Dymek, M.Wróbel, M.Dollár and M.Blicharski, “Influence of Plastic Deformation and Prolonged Aging on Microstructure of a Haynes 242 Alloy”, Journal of Microscopy, 224 (2006) 24
  • S.Dymek, M.Wróbel, E.Stepniowska and M.Dollár, “Microstructural stability and mechanical properties of an age hardenable Ni-Mo-Cr alloy subjected to long term exposure to elevated temperatures” Materials Characterization, 61 (2010) 769