PSI - Issue 23

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Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2019) 000 – 000 Structural Integrity Procedia 00 (2019) 000 – 000

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Procedia Structural Integrity 23 (2019) 179–184

© 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the scientific committee of the ICMSMF organizers © 201 9 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the scientific committee of the IC MSMF organizers. In his paper, ternary FeAl20Si20 (wt.%) intermeta lic alloy was pr pared by mechanical alloying from dif erent feedstock materi ls. Various combinations of element l as well as pr -alloy d feedstock powde s were milled in hard-soft, soft-hard a d hard-hard init al mixing conditions with the aim to optimize the mechanical lloying process especially speed-up the processing time. The microstructure, phase com osition and mechanical properties after different time of mechanical alloying were haract rized. T effec f usi g the pre-alloyed powders on kin tics of m chanical alloying and final phase composition is compared with the results obt ined on batches prepared from elemental powders. Using of ppropriate pre-alloyed p wder ca slightly speed-u mechanical alloying process, nevertheless it has no significant effect on final microstructure, phase composition and mechanical properties. © 201 9 The Authors. Published by Elsevier B.V. This is an ope acces article under CC BY-NC-ND lic nse (http://creativecommon org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the scientific committee of the IC MSMF organizers. 9th International Conference on Materials Structure and Micromechanics of Fracture Mechanical Alloying of Fe-Al-Si Intermetallic Compounds Using Pure and Pre-Alloyed Powders Petr Haušild a, * , Jaroslav Čech a , Václav Bouček a , Miroslav Karlík a , Kateřina Nová b , Filip Průša b , Pavel Novák b , Jaromír Kopeček c a Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Trojanova 13, 120 00 Praha 2, Czech Republic b University of Chemistry and Technology Prague, Faculty of Chemical Technology , Technická 5, 166 28 Prague 6, Czech Republic c Institute of Physics, ASCR, v.v.i., Department of Functional Materials, Na Slovance 2, 182 21 Prague 8, Czech Republic In this paper, ternary FeAl20Si20 (wt.%) intermetallic alloy was prepared by mechanical alloying from different feedstock materials. Various combinations of elemental as well as pre-alloyed feedstock powders were milled in hard-soft, soft-hard and hard-hard initial mixing conditions with the aim to optimize the mechanical alloying process especially speed-up the processing time. The microstructure, phase composition and mechanical properties after different time of mechanical alloying were characterized. The effect of using the pre-alloyed powders on kinetics of mechanical alloying and final phase composition is compared with the results obtained on batches prepared from elemental powders. Using of appropriate pre-alloyed powders can slightly speed-up mechanical alloying process, nevertheless it has no significant effect on final microstructure, phase composition and mechanical properties. 9th International Conference on Materials Structure and Micromechanics of Fracture Mechanical Alloying of Fe-Al-Si Intermetallic Compounds Using Pure and Pre-Alloyed Powders Petr Haušild a, * , Jaroslav Čech a , Václav Bouček a , Miroslav Karlík a , Kateřina Nová b , Filip Průša b , Pavel Novák b , Jaromír Kopeček c a Czech Technical Univ rs ty in Prague, Faculty of N clear Sciences and Physical Engineering, Trojanova 13, 120 00 Praha 2, Cz ch Republic b Univer ity of Chemi try and Technology Pragu , Faculty of Chemical Technology , Te hnická 5, 66 28 Prague 6, Cz ch Republic c Institute of Physics, ASCR, v.v.i., Department of Functional Materials, Na Slovance 2, 182 21 Prague 8, Czech Republic Abstract Abstract

Keywords: Intermetallic alloys; mechanical alloying; SEM; X-ray diffraction; nanoindentation Keywords: Intermetallic alloys; mechanical alloying; SEM; X-ray diffraction; nanoindentation

* Corresponding author. Tel.: +420 224 358 514; fax: +420 224 358 523. E-mail address: petr.hausild@fjfi.cvut.cz * Correspon ing author. Tel.: +420 224 358 514; fax: +420 224 358 523. E-mail address: petr.hausild@fjfi.cvut.cz

2452-3216 © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the scientific committee of the IC MSMF organizers. 2452-3216 © 2019 The Authors. Published by Elsevier B.V. This is an ope acces article under CC BY-NC-ND lic nse (http://creativecommon org/licenses/by-nc-nd/4.0/)

Peer-review under responsibility of the scientific committee of the IC MSMF organizers.

2452-3216 © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the scientific committee of the ICMSMF organizers 10.1016/j.prostr.2020.01.083