Hello! I'm Paraskevas

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I am a Postdoctoral Researcher and Deputy Group Leader of the Atom Probe Tomography group in Max-Planck-Institut für Eisenforschung. I am using high-resolution characterization methods for the investigation of deformation mechanisms and plasticity-assisted segregation phenomena in high performance materials, such as titanium alloys and nickel-based superalloys for aerospace applications.

EXPERIENCE

August 2018-Present

Deputy Group Leader

Max-Planck-Institut für Eisenforschung

Atom Probe Tomography group

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July 2016-Present

Postdoctoral Researcher

Max-Planck-Institut für Eisenforschung

Department of Microstructure Physics and Alloy Design

May 2016-July 2016

Postdoctoral Researcher

University of Oxford

Department of Engineering, Solid Mechanics and Materials Engineering

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2013-2016

DPhil Research

University of Oxford

Department of Materials

EDUCATION

2013-2016

Doctor of Philosophy in Materials

University of Oxford

Department of Materials

St Anne's College

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2009-2011

Master of Science in Materials Science and Technology

National Technical University of Athens

School of Chemical Engineering

2004-2009

Diploma in Mining Engineering and Metallurgy

National Technical University of Athens

School of Mining and Metallurgical Engineering

PUBLICATIONS

2020

1. A. Cervellon, S. Hémery, P. Kürnsteiner, B. Gault, P. Kontis and J. Cormier, Crack initiation mechanisms during very high cycle fatigue of Ni-based single crystal superalloys at high temperature, Acta Materialia 188 (2020) 131-144 (DOI). 

2. S. Evertz, I. Kirchlechner, R. Soler, C. Kirchlechner, P. Kontis, J. Bednarcik, B. Gault, G. Dehm, D. Raabe and J.M. Schneider, Electronic structure based design of thin film metallic glasses with superior fracture toughness, Materials & Design 186 (2020) (DOI).

2019

1. P. Kontis, E. Chauvet, Z. Peng, J. He, A.K. da Silva, D. Raabe, C. Tassin, J.-J. Blandin, S. Abed, R. Dendievel, B. Gault and G. Martin, Atomic-scale grain boundary engineering to overcome hot-cracking in additively-manufactured superalloys, Acta Materialia 177 (2019) 209-221 (DOI) (arXiv).

2. L. Lilensten, S. Antonov, D. Raabe, S. Tin, B. Gault and P. Kontis, Deformation of Borides in Nickel-based Superalloys: a Study of Segregation at Dislocations, Microscopy and Microanalysis 25(2) (2019) 2538-2539 (DOI).

3. ​J.R. Mianroodi, P. Shanthraj, P. Kontis, J. Cormier, B. Gault, B. Svendsen and D.Raabe, Atomistic phase field chemomechanical modeling of dislocation-solute-precipitate interaction in Ni-Al-Co, Acta Materialia 175 (2019) 250-261 (DOI-Open Access).

4. F.F. Dear, P. Kontis, B. Gault, J. Ilavsky, H. Gardner, P.A.J. Bagot, M.P. Moody, D. Rugg and D Dye, Combined APT, TEM and SAXS characterisation of nanometre-scale precipitates in titanium alloys, Microscopy and Microanalysis 25(2) (2019) 2516-2517 (DOI). 

5. P. Kontis, A. Kostka, D. Raabe and B. Gault, Influence of composition and precipitation evolution on damage at grain boundaries in a crept polycrystalline Ni-based superalloy, Acta Materialia 166 (2019) 158-167 (DOI) (arXiv).

6. Y. Chang, W. Lu, J. Guénolé, L. Stephenson, A. Szczepaniak, P. Kontis, A. Ackerman, F. Dear, I. Mouton, X. Zhong, S. Zhang, D. Dye, C. Liebscher, D. Ponge, S. Korte-Kerzel, D. Raabe and B. Gault, Ti and its alloys as examples of cryogenic focused ion beam milling of environmentally-sensitive materials, Nature Communications 10 (2019) (DOI).

7. I. Mouton, A. Breen, S. Wang, Y. Chang, A. Szczepaniak, P. Kontis, L. Stephenson, D. Raabe, M. Herbig, T.B. Britton and B. Gault, Quantification Challenges for Atom Probe Tomography of Hydrogen and Deuterium in Zircaloy-4, Microscopy and Microanalysis 25 (2019) 481-488 (DOI).

2018

1. Z. Lei, X.J. Liu, Y. Wu, H. Wang, S.H. Jiang, S. Wang, X.D. Hui, Y. Wu, B. Gault, P. Kontis, D. Raabe, L. Gu, Q. Zhang, H. Chen, H. Wang, J. Liu, K. An, Q. Zeng and T.G. Nieh, Enhanced strength and ductility in a high-entropy alloy via ordered oxygen complexes, Nature 2018 (DOI).

2. X. Wu, S.K. Makineni, P. Kontis, G. Dehm, D. Raabe, B. Gault, G. Eggeler, On the segregation of Re at dislocations in the γ’ phase of Ni-based single crystal superalloys , Materialia 4 (2018) 109-114 (DOI) (arXiv).

3. P. Kontis, M. Köhler, S. Evertz, Y.-T. Chen, V. Schnabel, R. Soler, J. Bednarick, C. Kirchlechner, G. Dehm, D. Raabe, J.M. Schneider and B. Gault, Nano-laminated Thin Film Metallic Glass Design for Outstanding Mechanical Properties, Scripta Materialia 155 (2018) 73-77 (DOI).

4. S.K. Makineni, A. Kumar, M. Lenz, T. Meiners, P. Kontis, C.H. Zenk, S. Zaefferer, G. Eggeler, S. Neumeier, E. Spiecker, D. Raabe and B. Gault, On the diffusive phase transformation mechanism assisted by extended dislocations during creep of a single crystal CoNi-based superalloy, Acta Materialia 155 (2018) 362-371 (DOI).

5. A. Breen, I. Mouton, W. Lu, S. Wang, A. Szczepaniak, P. Kontis, L. Stephenson, Y. Chang, A. Kwiatkowski da Silva, C. Liebscher, D. Raabe, T.B. Britton, M. Herbig and B. Gault, Atomic scale analysis of grain boundary deuteride growth front in Zircaloy-4, Scripta Materialia 156 (2018) 42-46 (DOI) (arXiv).

6. P. Kontis, Z. Li, M. Segersäll, J.J. Moverare, R.C. Reed, D. Raabe and B. Gault, The role of oxidized carbides on thermal-mechanical performance of polycrystalline superalloys, Metallurgical and Materials Transactions A 49 (2018)  4236-4245 (DOI).

7. S. Hamadi, J. Delautre, J. Cormier, P. Villechaise, S. Utada, P. Kontis and Nathalie Bozzolo, Consequences of a room temperature plastic deformation during processing on the durability of a Ni-based SX superalloy, Metallurgical and Materials Transactions A 49 (2018) 4246-4261 (DOI).

8. L.M. Suave, A.S. Munoz, A. Gaubert, G. Benoit, L. Marcin, P. Kontis, P. Villechaise and J. Cormier, Thin-wall debit in creep of DS200+Hf alloy, Metallurgical and Materials Transactions A 49 (2018) 4012-4028 (DOI).

9. S.K. Makineni, M. Lenz, P. Kontis, Z. Li, A. Kumar, P.J. Felfer, S. Neumeier, M. Herbig, E. Spiecker, D. Raabe and B. Gault, Correlative Microscopy - Novel methods and their applications to explore 3D chemistry and structure of nanoscale lattice defects: A case study in superalloys, JOM 70(9) (2018) 1736-1743 Invited (DOI).

10. P. Kontis, D.M. Collins, A.J. Wilkinson, R.C. Reed, D. Raabe and B. Gault, Microstructural degradation of polycrystalline superalloys from oxidized carbides and implications on crack initiation, Scripta Materialia 147 (2018) 59-63 (DOI).

11. P. Kontis, Z. Li, D.M. Collins, J. Cormier, D. Raabe and B. Gault, The Effect of Chromium and Cobalt Segregation at Dislocations on Nickel-based Superalloys, Scripta Materialia 145 (2018) 76-80 (DOI).

12. E. Chauvet, P. Kontis, E.A. Jägle, B. Gault, D. Raabe, C. Tassin, J.-J. Blandin, R. Dendievel, B. Vayre, S. Abed, G. Martin, Hot Cracking Mechanism Affecting a Non-weldable Ni-based Superalloy Produced by Selective Electron Beam Melting, Acta Materialia 142 (2018) 82-94 (DOI).

2017

1. Y. Gong, D.J. Young, P. Kontis, Y.L. Chiu, H. Larsson, A. Shin, J.M. Pearson, M.P. Moody and R.C. Reed, On the Breakaway Oxidation of Fe9Cr1Mo Steel in High Pressure CO2, Acta Materialia 130 (2017) 361-374 (DOI-Open Access).

2. P. Kontis, E. Alabort, D. Barba, D.M. Collins, A.J. Wilkinson and R.C. Reed, On the Role of Boron on Improving Ductility in a New Polycrystalline Superalloy, Acta Materialia 124 (2017) 489-500 (DOI-Open Access).

3. P. Kontis, S. Pedrazzini, Y. Gong, P.A.J. Bagot, M.P. Moody and R.C. Reed, The Effect of Boron on Oxide Scale Formation in a New Polycrystalline Superalloy, Scripta Materialia 127 (2017) 156-159 (DOI-Open Access).

2016

1. E. Alabort, P. Kontis, D. Barba, K. Dragnevski and R.C. Reed, On the Mechanism of Superplasticity in Ti-6Al-4V, Acta Materialia 105 (2016) 449-463 (DOI-Open Access).

2. P. Kontis, H.A.M. Yusof, S. Pedrazzini, M. Danaie, K.L. Moore, P.A.J. Bagot, M.P. Moody, C.R.M. Grovenor and R.C. Reed, On the Effect of Boron on Grain Boundary Character in a New Polycrystalline Superalloy, Acta Materialia 103 (2016) 688-699 (DOI-Open Access).

3. W.D. Summers, E. Alabort, P. Kontis, F. Hofmann and R.C. Reed, In-situ high-temperature tensile testing of a polycrystalline nickel-based superalloy, Materials at High Temperature 33 338-345 (2016) (DOI).

4. P. Kontis, D.M. Collins, S. Johansson, A.J. Wilkinson, J.J. Moverare and R.C. Reed, Crack Initiation and Propagation during Thermal-Mechanical Fatigue of IN792: Effects of Dwell Time, 13th International Symposium on Superalloys 2016, Pennsylvania, USA, 11 - 15 September 2016 (DOI).

2015

1. M. Segersäll, P. Kontis, S. Pedrazzini, P.A.J. Bagot, M.P. Moody, J.J. Moverare, R.C. Reed, Thermal-Mechanical Fatigue Behaviour of a New Single Crystal Superalloy: Effects of Si and Re Alloying, Acta Materialia 95 (2015) 456-467 (DOI).

For the full publication list please follow this link.