Ing. Martin Juliš, Ph.D.
E-mail:   Martin.Julis@ceitec.vutbr.cz  Dept.:   Institute of Materials Science and Engineering Dept. of Mechanics and Design of Materials Position:   Assistant Professor Room:   Laboratoř materiálových analýz a spolupráce s průmyslem, Purkyňova 656/123, 612 00 Brno

Supervised courses:

• Metallic Materials (WKM)
• Non-destructive Testing of Materials (WNZ)

Publications:

• KLAKURKOVÁ, L.; JULIŠ, M.; ČELKO, L.; HORYNOVÁ, M.; HÉGR, E.; ŠVEJCAR, J.:
  Analysis of surface defects of aluminium components with hard anodized layers, Elsevier
  journal article in Web of Science
• HORYNOVÁ, M.; JULIŠ, M.; ČELKO, L.; ŠVEJCAR, J.:
  Failure analysis of induction hardened injector body, Elsevier
  journal article in Web of Science
• SLÁMEČKA, K.; ČELKO, L.; SKALKA, P.; POKLUDA, J.; NĚMEC, K.; JULIŠ, M.; KLAKURKOVÁ, L.; ŠVEJCAR, J.:
  Bending fatigue failure of atmospheric-plasma-sprayed CoNiCrAlY + YSZ thermal barrier coatings
  journal article in Web of Science
• ČELKO, L.; KLAKURKOVÁ, L.; JULIŠ, M.; JULIŠOVÁ, M.; ŠVEJCAR, J.:
  Formation and Growth of Eutectic Layers in Nickel Coated Thick Aluminium-based Substrates,
  45th International October Conference of Mining and Mellurgy Proceedings, pp.333-336, ISBN 978-86-6305-012-9, (2013), University of Belgrade - Technical Faculty in Bor
  conference paper
  akce: 45th International October Conference on Mining and Metallurgy, Bor Lake, Bor, 16.10.2013-19.10.2013
• OBRTLÍK, K.; POSPÍŠILOVÁ, S.; JULIŠ, M.; PODRÁBSKÝ, T.; POLÁK, J.:
  Fatigue behaviour of coated and uncoated cast Inconel 713LC at 800 deg,
  INTERNATIONAL JOURNAL OF FATIGUE, Vol.41, (2012), No.., pp.101-106, ISSN 0142-1123, Elsevier, Ltd.
  journal article - other
• JULIŠ, M.; OBRTLÍK, K.; POSPÍŠILOVÁ, S.; PODRÁBSKÝ, T.; POLÁK, J.:
  Influence of AlSi diffusion coating on low cycle fatigue properties of cast superalloy Inconel 738LC at 800deg,
  Key Engineering Materials (print), Vol.488-489, (2012), No.1, pp.307-310, ISSN 1013-9826, Trans Tech Publications
  journal article - other
• OBRTLÍK, K.; HUTAŘOVÁ, S.; JULIŠ, M.; PODRÁBSKÝ, T.; KRUML, T.:
  Influence of Al-Cr diffusion coating on low cycle fatigue behavior of cast nickel-base superalloy at 800 C,
  19th European Conference on Fracture, pp.1-7, ISBN 978-5-905576-18-8, (2012), Kazan
  conference paper
  akce: European Conference on Fracture, ECF19, Kazaň, 26.08.2012-31.08.2012
• OBRTLÍK, K.; POSPÍŠILOVÁ, S.; JULIŠ, M.; PODRÁBSKÝ, T.; POLÁK, J.:
  Effect of Al and AlSi diffusion coating on the low cycle fatigue behavior of Inconel 713LC,
  Procedia Engineering, Vol.2011, (2011), No.10, pp.1360-1365, ISSN 1877-7058, Elsevier Ltd.
  journal article - other
• POSPÍŠILOVÁ, S.; OBRTLÍK, K.; JULIŠ, M.; PODRÁBSKÝ, T.:
  Initiation and Growth of Fatigue Cracks in Inconel 713LC with Al Coating at 800 degC,
  Chemické listy, Vol.105, (2011), No.S, pp.840-841, ISSN 0009-2770, Chemické listy
  journal article - other

List of publications at Portal BUT

Abstracts of most important papers:

• OBRTLÍK, K.; POSPÍŠILOVÁ, S.; JULIŠ, M.; PODRÁBSKÝ, T.; POLÁK, J.:
  Fatigue behaviour of coated and uncoated cast Inconel 713LC at 800 deg,
  INTERNATIONAL JOURNAL OF FATIGUE, Vol.41, (2012), No.., pp.101-106, ISSN 0142-1123, Elsevier, Ltd.
  journal article - other
  Cylindrical specimens of Inconel 713LC in as-received condition and with surface treatment by Al diffusion coating were cyclically strained under strain control at 800 deg in air. Surface treated layer characterization is obtained and the hardness depth profile was measured. Cyclic stress-strain response and fatigue life of both materials are acquired. The stress response of the coated superalloy is lower in comparison with the untreated one. Beneficial effect of surface treatment on the Manson-Coffin curve is documented. Specimen section and fracture surface study revealed fatigue damage mechanisms both in coated and uncoated specimens. Main crack propagation path is predominantly interdendritic.
• JULIŠ, M.; OBRTLÍK, K.; POSPÍŠILOVÁ, S.; PODRÁBSKÝ, T.; POLÁK, J.:
  Influence of AlSi diffusion coating on low cycle fatigue properties of cast superalloy Inconel 738LC at 800deg,
  Key Engineering Materials (print), Vol.488-489, (2012), No.1, pp.307-310, ISSN 1013-9826, Trans Tech Publications
  journal article - other
  High temperature low cycle fatigue behaviour of cast nickel-based superalloy Inconel 738LC in as-received condition and coated with an Al-Si diffusion layer was studied. The Al-Si protective layer was deposited on the gauge section of cylindrical specimens using the slurry technique. Fatigue tests were performed on cylindrical specimens under total strain control in symmetrical cycle at 800 deg in air. The coating has a beneficial effect on fatigue life in the low amplitude domain. The stress response of the coated material is higher for high amplitudes in comparison with the uncoated one. Fracture surfaces and sections parallel to the specimen axis have been examined to study fatigue damage mechanisms.
• OBRTLÍK, K.; HUTAŘOVÁ, S.; JULIŠ, M.; PODRÁBSKÝ, T.; KRUML, T.:
  Influence of Al-Cr diffusion coating on low cycle fatigue behavior of cast nickel-base superalloy at 800 C,
  19th European Conference on Fracture, pp.1-7, ISBN 978-5-905576-18-8, (2012), Kazan
  conference paper
  akce: European Conference on Fracture, ECF19, Kazaň, 26.08.2012-31.08.2012
  High temperature low cycle fatigue behavior of the cast nickel-based superalloy Inconel 713LC in as-received condition and coated with an Al-Cr diffusion layer have been investigated. The diffusion coating was deposited using the CVD out of pack technique. It was characterized and the hardness depth profile was measured. Fatigue tests were performed at 800 C in air using cylindrical specimens. Cyclic hardening/softening curves, cyclic stress-strain curve and fatigue life curves were obtained. The detrimental effect of the surface treatment on the Manson-Coffin and the derived Wöhler curves is documented. Fracture surface and surface relief observations and examinations of specimen sections help to discuss the effect of the diffusion coating on the fatigue life.
• OBRTLÍK, K.; POSPÍŠILOVÁ, S.; JULIŠ, M.; PODRÁBSKÝ, T.; POLÁK, J.:
  Effect of Al and AlSi diffusion coating on the low cycle fatigue behavior of Inconel 713LC,
  Procedia Engineering, Vol.2011, (2011), No.10, pp.1360-1365, ISSN 1877-7058, Elsevier Ltd.
  journal article - other
  Cylindrical specimens of Inconel 713LC in untreated condition and surface treated with Al and Al-Si diffusion coating were cyclically strained under strain control at 800 deg in air. The structural and hardness characteristics of the hardened surface layer are presented. Cyclic hardening/softening curves, cyclic stress-strain curves, and fatigue life curves are obtained. The sections parallel to the specimen axis have been examined to study fatigue damage mechanisms. The effect of Al coating on stress response and fatigue life slightly differs from that of Al-Si coating.
• OBRTLÍK, K.; POSPÍŠILOVÁ, S.; JULIŠ, M.; PODRÁBSKÝ, T.; POLÁK, J.:
  Low Cycle Fatigue Behavior of Cast Superalloy Inconel 713LC with Al Coating at 800 degC,
  Key Engineering Materials (print), Vol.452-453, (2011), No.1, pp.265-268, ISSN 1013-9826, Trans Tech Publications
  journal article - other
  Cylindrical specimens of Inconel 713LC in as-cast condition and with Al diffusion coating by the CVD technique were cyclically strained under total strain control at 800 degC. Hardening/softening curves, cyclic stress-strain curves, and fatigue life curves are obtained. The coating has a beneficial effect on the Manson-Coffin curve while the fatigue life is reduced in the Basquin representation. The stress response of the coated material is lower in comparison with the uncoated one. Sections parallel to the specimen axis have been examined to study fatigue damage mechanisms.