John Perepezko

Professor

1509 University Avenue
Madison, WI 53706
Tel: 608/263-1678,  

Ph: (608) 263-1678
perepezk@engr.wisc.edu


Profile Summary

As a result of our efforts in the analysis and modeling of alloy solidification it has been possible to identify new microstructural morphologies and to establish processing conditions where nucleation controlled kinetics dominates the microstructural evolution. This basic information can be applied to understand grain refinement and novel microstructures in cast and rapidly solidified alloys. It also is used to guide microgravity materials processing and alloy design including the solidification processing of composite materials. Extreme solidification conditions at high rates and /or high undercooling often result in metastable phases and amorphous alloys. Our work on amorphous Al alloys has focused on understanding glass formation and the primary crystallization reaction that yields a high density of Al nanocrystals. Interestingly, similar microstructures can be synthesized by the repeated cold rolling of elemental multilayers as a driven system processing where the deformation induced alloying at interfaces is a key issue for study.

Our work has yielded new understanding on the nucleation of phases during interdiffusion and interface reaction in thin-film multilayers. With this understanding we have developed the concept of a kinetic bias and have demonstrated the application of biasing to control diffusion pathways and produce phase selection during interfacial reactions in multicomponent systems. These concepts provide for an effective strategy to synthesize structural composites by in-situ reactions and also to develop electronic materials such as photovoltaics or high-temperature devices from multilayers. We have recently extended the capability of using in-situ reactions and kinetic biasing to the design of robust coatings that exhibit self-healing behavior as well as oxidation protection at high temperature.

Other studies of multiphase microstructures involve examining high-temperature alloys such as superalloys, titanium aluminide intermetallics and refractory alloys. The examination of phase stability and reaction kinetics during processing provides a basis for the achievement of tailored microstructures and alloy designs to enhance performance in structural applications as demonstrated in advanced Mo-Si-B alloys.

Education

  • BS (Metallurgical Engineering) 1967, Polytechnic Institute of New York.
  • MS (Metallurgical Engineering) 1968, Polytechnic Institute of New York.
  • PhD (Metallurgical and Materials Science) 1973, Carnegie-Mellon University.

Research Interests

  • Phase transformations
  • Interface reactions / coating design
  • Metastable and amorphous phases
  • Kinetics
  • Nucleation
  • Metal powders and high temperature intermetallic alloys
  • Rapid solidification
  • Microgravity processing

Awards, Honors and Societies

  • Adjunct Processor - Tohoku University (Sendai, Japan)
  • William Hume-Rothery Award, TMS (2009)
  • Who\'s Who in Engineering
  • Member of TMS, AIME, ASM, Electrochemical Society, Alpha Sigma Mu, Sigma Xi, APMI, MRS, ASEE.
  • IBM-Bascom Professorship
  • Principal Editor for Scripta Materialia 2003-2008
  • Member of National Academy of Engineering
  • Alexander von Humboldt Foundation Forschungpreise (1996)
  • Fellow of ASM-International, TMS

Publications

  • Amorphous Metal Structures and Method, US Patent 4,282,034.
  • Metal Droplet Formation of High Melting Point Metals, US Patent 4,321,086.
  • Semiconductor Device Having an Amorphous Metal Layer Contact, US Patent 4,494,136.
  • Use of Metallic Glasses for Fabrication of Structures with Submicron Dimensions, US Patent 4,630,094.
  • Method of Evaluation and Identification for the Design of Effective Innoculation Agents, US Patent 5,066,324.
  • In-Situ Debond Coating for Fibers. US Patent 6,056,907.
  • In-Situ Debond Coating for Fibers, US Patent 6,376,074.
  • Process for Preparing In-Situ Single Crystal Composites of Titanium-Aluminum-Niobium Alloys, US Patent 6,436,208.
  • Nanocrystal dispersed amorphous alloys, US Patent 6,261,386.
  • Oxidation resistant coatings for ultra high temperature transition metals, US Patent 7,005,191.
  • Oxidation resistant coatings for ultra high temperature transition metals, US Patent 7,560,138.
  • H. Sieber, J.S. Park, J. Weissmüller and J.H. Perepezko, Phase Reactions in Cold Rolled Al/Ni Multilayers Acta Materialia 49 1139 (2001).
  • J.H. Perepezko, R. Sakidja, S. Kim and J.S. Park, Multiphase Microstructures and Stability in High Temperature Mo-Si-B Alloys, in Structural Intermetallics 2001, Eds. K.J. Hemker, D.M. Dimiduk, H. Clemens, R. Darolia, H. Inui, J.M. Larsen, V.K. Sikka,M. Thomas and J.D. Whittenberger, (TMS, Warrendale, PA) 505 (2001).
  • J.H. Perepezko and R.J. Hebert, Amorphous Aluminum Alloys-Synthesis and Stability, Journal of Metals 54 34 (2002).
  • J.S. Park, R. Sakidja and J.H. Perepezko, Coating Designs for Oxidation Control of Mo-Si-B Alloys, Scripta Materialia 46 765 (2002).
  • J.H. Perepezko, R.J. Hebert and W.S. Tong, Amorphization and Nanostructure Synthesis in Al Alloys, Intermetallics 10 1079 (2002).
  • J.H. Perepezko, P.G. Höckel, J.S. Paik, Initial Crystallization Kinetics in Undercooled Droplets , Thermochemica Acta 388 129 (2002).
  • J. H. Perepezko and W. S. Tong, Nucleation-Catalysis-Kinetics Analysis under Dynamic Conditions,Philosophical Transactions of the Royal Society of London Series A, 361, 447 (2003).
  • R. J. Hebert and J. H. Perepezko, Structural Transformations in Crystalline and Amorphous Multilayer Samples during Cold-Rolling, Scripta Mat., 49, 933 (2003).
  • J. H. Perepezko, R. J. Hebert, W. S. Tong, J. Hamann, H. R. Rosner and G. Wilde, Nanocrystallization Reactions in Amorphous Aluminum Alloys, Mater. Trans. JIM, 44 1982 (2003).
  • J.H. Perepezko and R.J. Hebert, Alloying Reactions in Nanostructured Multilayers during Intense Deformation, Z. Metallkd. 94 1111(2003).
  • R. Sakidja, S. Kim, J.S. Park, and J.H. Perepezko, Transition Metal Alloying and Phase Stability in the Mo-Si-B System, Mat. Res. Soc. Symp., 753 BB2.3 (2003).
  • D.M. Dimiduk and J.H. Perepezko, Mo-Si-B Alloys: Developing a Revolutionary Turbine-Engine Materials MRS Bulletin, 28 639 (2003).
  • J.H. Perepezko, Nucleation-Controlled Reactions and Metastable Structures, Progress in Materials Science, 49 263 (2004).
  • R. J. Hebert and J. H. Perepezko, Deformation-induced synthesis and structural transformations of metallic multilayers, Scripta Materialia, 50 807 (2004).
  • J.H. Perepezko, Nanocrystallization, Encylopedia of Nanoscience and Nanotechnology,. (Marcel Dekker, New York) 2305 (2004).
  • \"Nanocrystallization\", J.H. Perepezko, Encylopedia of Nanoscience and Nanotechnology,. (Marcel Dekker, New York) 2305 (2004).
  • \"Interface Reactions between Ni and Amorphous SiC\", J.H. Perepezko, Z.F. Dong, S.Kim and A.S. Edelstein, Jnl. of Electronic Materials 33, 1064 (2004).
  • \"Aluminum Nanoscale Order in Amorphous Al92Sm8 Measured by Fluctuation Electron Microscopy\", W.G. Stratton, J. Hamann, J.H. Perepezko, P.M. Voyles, X. Mao and S.V. Khare, Appl. Phys. Lett., 86, 141910 (2005).
  • \"Phase Stability and Alloying Behavior in the Mo-Si-B System\", R. Sakidja, and J. H. Perepezko, Met. And Mat. Trans., 36A, 507 (2005).
  • \"Synthesis of Oxidation Resistant Silicide Coatings on Mo-Si-B Alloys\" R. Sakidja, J.S. Park, J. Hamann and J.H. Perepezko, Scripta Mater., 53, 723 (2005).
  • \"Nucleation Controlled Phase Selection during Solidification\" , J.H. Perepezko, Mat. Sci. and Eng. 413-414A, 389 (2005).
  • \"Dislocation Formation during Deformation-Induced Synthesis of Nanocrystals in Amorphous and Partially Crystalline Amorphous Al88Y7Fe5 Alloy\" R. Hebert, J.H. Perepezko, H. Rösner and G. Wilde, Scripta Mat., 54, 25 (2006).
  • \"Critical Cooling Rate for Fe48Cr15Mo14Y2C15B6 Bulk Metallic Glass Formation\", K. Hildal, N. Sekido and J.H. Perepezko, Intermetallics, 14, 898 (2006).
  • \"Bulk Liquid Undercooling and Nucleation in Gold\", G. Wilde, J.L. Sebright and J.H. Perepezko, Acta Mater., 54, 4759 (2006).
  • \"Analysis of Solidification Microstructures during Wedge-Casting\" J.H. Perepezko and K. Hildal, Phil. Mag. 86 , 3681 (2006).
  • \"Aluminum Pack Cementation on Mo-Si-B Alloys\", F. Rioult, N. Sekido, R. Sakidja, and J. H. Perepezko, J. Electrochem. Soc. 154, C692 (2007).
  • \"DTA and Heat-Flux DSC Measurements of Alloy Melting and Freezing\", W. J. Boettinger, U. R. Kattner, K-W. Moon and J. H. Perepezko, in Methods for Phase Diagram Determination J.-C. Zhao,Ed. (Elsevier, Oxford) 151-221 (2007).
  • \"Effect of Intense Rolling and Folding on the Phase Stability of Amorphous Al-Y-Fe Alloys\", R.J. Hebert and J.H. Perepezko, Met. and Mat. Trans., 39A, 1804 (2008)
  • \"Phase Stability and Structural Defects in High-Temperature Mo-Si-B Alloys\", R. Sakidja, J.H. Perepezko, S. Kim and N. Sekido, Acta Mater., 56, 5223, (2008)
  • \"Metallic Glass Formation Reactions and Interfaces\", J.H. Perepezko and K. Hildal, Mater. Sci. and Eng., 148B, 171 (2008)
  • \"Superheating\", J. H. Perepezko, Encyclopedia of Materials: Science and Technology, 8975, (2008)
  • \"Nucleation Kinetics and Grain Refinement\", J.H. Perepezko, ASM Handbook, Volume 15: Casting, (ASM-International, Materials Park, OH) 276 (2008).
  • \"Transient oxidation of Mo-Si-B alloys: Effect of the microstructure size scale\", F.A. Rioult, S.D. Imhoff, R. Sakidja, J.H. Perepezko, Acta Mater. 57, 4600 (200

Courses

Fall 2016-2017

  • MS&E 790 - Master\'s Research or Thesis
  • MS&E 803 - Special Topics in Materials Science
  • MS&E 890 - Pre-Dissertator\'s Research
  • MS&E 990 - Research and Thesis
  • MS&E 699 - Independent Study
  • MS&E 790 - Master\'s Research or Thesis
  • MS&E 803 - Special Topics in Materials Science
  • MS&E 890 - Pre-Dissertator\'s Research
  • MS&E 990 - Research and Thesis
  • MS&E 461 - Advanced Metal Casting
  • Profile Summary

    As a result of our efforts in the analysis and modeling of alloy solidification it has been possible to identify new microstructural morphologies and to establish processing conditions where nucleation controlled kinetics dominates the microstructural evolution. This basic information can be applied to understand grain refinement and novel microstructures in cast and rapidly solidified alloys. It also is used to guide microgravity materials processing and alloy design including the solidification processing of composite materials. Extreme solidification conditions at high rates and /or high undercooling often result in metastable phases and amorphous alloys. Our work on amorphous Al alloys has focused on understanding glass formation and the primary crystallization reaction that yields a high density of Al nanocrystals. Interestingly, similar microstructures can be synthesized by the repeated cold rolling of elemental multilayers as a driven system processing where the deformation induced alloying at interfaces is a key issue for study.

    Our work has yielded new understanding on the nucleation of phases during interdiffusion and interface reaction in thin-film multilayers. With this understanding we have developed the concept of a kinetic bias and have demonstrated the application of biasing to control diffusion pathways and produce phase selection during interfacial reactions in multicomponent systems. These concepts provide for an effective strategy to synthesize structural composites by in-situ reactions and also to develop electronic materials such as photovoltaics or high-temperature devices from multilayers. We have recently extended the capability of using in-situ reactions and kinetic biasing to the design of robust coatings that exhibit self-healing behavior as well as oxidation protection at high temperature.

    Other studies of multiphase microstructures involve examining high-temperature alloys such as superalloys, titanium aluminide intermetallics and refractory alloys. The examination of phase stability and reaction kinetics during processing provides a basis for the achievement of tailored microstructures and alloy designs to enhance performance in structural applications as demonstrated in advanced Mo-Si-B alloys.


    Update Profile