Studie je zaměřena na získání poznatků a kontrolu tvorby intermetalických fází a jim odpovídajících mikrostruktur v práškovém depozitu připraveném kinetickým nanášením za studena a následným tepelným zpracováním. Ke splnění těchto cílů je nezbytné (i) zevrubně studovat proces depozice prostřednictvím kinetického nanášení za studena prášků vysoce reaktivních kovů (Ti, Al, Ni apod.) v porovnání s běžnými kompaktačními metodami a charakterizovat deformační texturu, mikrostrukturu a fázové složení depozitů; (ii) charakterizovat tyto parametry pro struktury získané tepelným zpracováním v běžné atmosféře, příp. v inertním plynu; (iii) rozvinout získané poznatky s cílem získat postup přípravy antioxidačních povlaků na experimentální TiAl slitině a (iv) kombinací získaných poznatků navrhnout postup přípravy materiálů s predikovatelnými vlastnostmi a dobrým aplikačním potenciálem.

Description in English
The study is aimed at gaining sufficient understanding and control over the formation of intermetallic phases and their respective microstructures in powder deposits prepared by cold gas dynamic spray technology and their subsequent thermal treatment. In order to pursue the aim there is a need for (i) a thorough study of the deposition process by cold gas dynamic spraying of highly reactive elements (Ti, Al, Ni etc.) in comparison with the traditional compacting methods and characterization of the deformation texture, microstructure and phase content of the deposits; (ii) characterization of these properties during heat treatment in ambient atmosphere or inert environment in order to allow controlling the microstructure and phase composition of the formed intermetallic materials; (iii) expanding of the obtained findings in order to develop a route for antioxidation coating formation in the experimental TiAl based alloy and (iv) combining of the gained knowledge in order to provide a defined path for creating materials with predictable qualities and good application potential.

Keywords
aluminidy titanu, intermetalické fáze, intermetalické slitiny, kinetické nanášení prášku za studena, depozice za studena, in situ reakce, kompozity, antioxidacní bariéry, objemová intermetalika

Key words in English
titanium; aluminides; intermetallic; compounds; intermetallic; alloys; cold; gas; dynamic; spray; cold; spray; in; situ; reactions; composites; antioxidation; bariers; bulk; intermetalics

GA13-35890S

Czech

Dlouhý Ivo, prof. Ing., CSc. - principal person responsible

Dept. of Mechanics and Design of Materials
- responsible department (1.1.1989 - not assigned)
Dept. of Mechanics and Design of Materials
- beneficiary (1.2.2013 - 31.12.2016)

DLOUHÝ, I.; STRATIL, L.; FUKUTOMI, H.; HASEGAWA, M. Crack resistance characterization in TiAl intermetallics with enhanced toughness. Key Engineering Materials (print), 2016, vol. 741, no. 11, p. 13-18. ISSN: 1013-9826.
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KRAJŇÁKOVÁ, P.; ČUPERA, J.; JAN, V.; DLOUHÝ, I. STUDY OF THE ELECTRON BEAM REMELTING OF A CGDS DEPOSITED CONICRALY LAYERS. In METAL 2017: 26TH INTERNATIONAL CONFERENCE ON METALLURGY AND MATERIALS. KELTICKOVA 62, SLEZSKA, OSTRAVA 710 00, CZECH REPUBLIC: TANGER LTD, 2017. p. 1333-1337. ISBN: 978-80-87294-79-6.
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KRAJŇÁKOVÁ, P.; DLOUHÝ, I.; ČÍŽEK, J.; ČUPERA, J.; SHVAB, R. Effect of Double Electron beam Remelting on Microstructure of HVOF and CGDS Bond Coat. In Metallography XVI. Materials Science Forum. Zurich, Switzerland: Trans tech Publications Ltd, 2017. p. 574-578. ISBN: 978-3-0357-1018-2. ISSN: 0255-5476.
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YIN, S.; XIE, Y.; ČÍŽEK, J.; EMMANUEL, E.; TANVIR, H.; DOWLING, D.; LUPOI, R. Advanced diamond-reinforced metal matrix composites via cold spray: Properties and deposition mechanism. COMPOSITES PART B-ENGINEERING, 2017, vol. 113, no. 1, p. 44-54. ISSN: 1359-8368.
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ČÍŽEK, J.; SEINER, H.; SEDLÁK, P.; HUANG, R.; ČUPERA, J.; DLOUHÝ, I.; LANDA, M. Elastic moduli, isotropy, and deformation accommodation mechanisms of cold sprayed deposits. In Proceedings of NMDFSP. Yokohama: Yokohama National University, 2016. p. 3-4. ISBN: 9782123456803.
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ČÍŽEK, J.; CÉNEK, L.; MATĚJKOVÁ, M.; KOUŘIL, J.; ČUPERA, J.; DLOUHÝ, I. Potential of New-Generation Electron Beam Technology in Interface Modification of Cold and HVOF Sprayed MCrAlY Bond Coats. In Proceedings of SMT30. Milan, Itálie: Politecnico di Milano, 2016. p. 1-5. ISBN: 9782123456803.
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ČUPERA, J. Imaging of lattice orientation and deformations by electron channelling contrast imaging compared with low voltage imaging and EBSD. In MULTI-SCALE DESIGN OF ADVANCED MATERIALS CONFERENCE PROCEEDINGS. Brno: Brno University of Technology, 2016. p. 2-12. ISBN: 978-80-214-5358-6.
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MATĚJKOVÁ, M.; ČÍŽEK, J.; GEARTNER, F.; KLASSEN,; DLOUHÝ, I. Effect of processing parameters on high-energy ball milling HA/Ti composite powders. In Multi-scale design of advanced materials conference proceedings. 2016. p. 19-24. ISBN: 978-80-214-5358-6.
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KHUN, N.; LI, Z.; KHOR, K.; ČÍŽEK, J. Higher in-flight particle velocities enhance in vitro tribological behavior of plasma sprayed hydroxyapatite coatings. Tribology International, 2016, vol. 103, no. 1, p. 496-503. ISSN: 0301-679X.
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MORAVČÍK, I.; ČÍŽEK, J.; DLOUHÝ, I.; KRAJŇÁKOVÁ, P. INFLUENCE OF SINTERING TEMPERATURE ON MICROSTRUCTURE AND HARDNESS OF AlCoCrFeNiTi0.5 HIGH ENTROPY ALLOY. In METAL 2016. Brno: TANGER Ltd., 2016. p. 64-65. ISBN: 978-80-87294-66-6.
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GAVENDOVÁ, P.; ČÍŽEK, J.; ČUPERA, J.; HASEGAWA, M.; DLOUHÝ, I. Microstructure modification of CGDS and HVOF sprayed CoNiCrAlY bond coat remelted by electron beam. Procedia Materials Science, 2016, vol. 12, no. 1, p. 89-94. ISSN: 2211-8128.
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MORAVČÍK, I.; ČÍŽEK, J.; GAVENDOVÁ, P.; SHEIKH, S.; GUO, S.; DLOUHÝ, I. Effect of heat treatment on microstructure and mechanical properties of spark plasma sintered AlCoCrFeNiTi0.5 high entropy alloy. MATERIALS LETTERS, 2016, vol. 174, no. 1, p. 53-56. ISSN: 0167-577X.
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ALIASGHARI, S.; NĚMCOVÁ, A.; ČÍŽEK, J.; GHOLINIA, A.; SKELDON, P.; THOMPSON, G. Effects of reagent purity on plasma electrolytic oxidation of titanium in an aluminate–phosphate electrolyte. TRANSACTIONS OF THE INSTITUTE OF METAL FINISHING, 2016, vol. 94, no. 1, p. 32-42. ISSN: 0020-2967.
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SEINER, H.; ČÍŽEK, J.; SEDLÁK, P.; HUANG, R.; ČUPERA, J.; DLOUHÝ, I.; LANDA, M. Elastic moduli and elastic anisotropy of cold sprayed metallic coatings. Surface and Coatings Technology, 2016, vol. 291, no. N/A, p. 342-347. ISSN: 0257-8972.
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GAVENDOVÁ, P.; ČÍŽEK, J.; ČUPERA, J.; HASEGAWA, M.; DLOUHÝ, I. Microstructure modification of CGDS and HVOF sprayed CoNiCrAlY bond coat remelted by electron beam. New Methods of Damage and Failure Analysis of Structural Parts. VŠB-TU Ostrava. Ostrava: Vydavatelství VŠB-TU Ostrava, 2014. p. 119-120. ISBN: 978-80-248-3488-7.
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JAN, V.; ČÍŽEK, J.; DYČKA, M.; ČUPERA, J. HYPO-EUTECTOID NITI ALLOY MANUFACTURED BY CGDS POWDER MIX DEPOSITION AND HEAT TREATEMENT. Limoges: University of Limoges, 2015.
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VÁLKA, L. The influence of impurity level on fracture behaviour of high strength structural steels. Žilina, Slovensko: Katedra materiálového inžinierstva, SF Žilinskej Univerzity v Žilině, 2015.
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ČÍŽEK, J.; SEINER, H.; HUANG, R.; LANDA, M.; DLOUHÝ, I. Elastic Isotropy of Cold Sprayed Coatings. Limoges: University of Limoges, 2015. p. 1-16.
Detail

ČÍŽEK, J.; SEINER, H.; HUANG, R.; LANDA, M.; DLOUHÝ, I. Elastic Isotropy of Cold Sprayed Coatings. In International Conference of Engineering Against Failure. Skiathos, Řecko: University of Patras, 2015. p. 401-406. ISBN: 978-960-88104-5-7.
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ČÍŽEK, J.; SEINER, H.; HUANG, R.; LANDA, M.; DLOUHÝ, I. Elastic Isotropy of Cold Sprayed Coatings. In International Thermal Spray Conference 2015 Proceedings. Long Beach, USA: ASM International, 2015. p. 353-356. ISBN: 978-1-62708-093-4.
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Responsibility: Dlouhý Ivo, prof. Ing., CSc.