The influence of melt mixing on the structure and properties of directed crystallized alloy Mo - 17,5Si - 8B

Authors

  • M.I. Upatov National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv
  • Yu.I. Bogomol National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv
  • V.V. Bolbut Otto-von-Guericke-Universität Magdeburg, Institut für Fertigungstechnik und Qualitätssicherung, Magdeburg, Federal Republic of Germany
  • P.I. Loboda National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv

DOI:

https://doi.org/10.15407/mom2018.01.022

Abstract

By method of crucibleless zone melting was obtained alloys Mo – 17,5% Si – 8% B (at.%), with additional melt mixing by rotating cylindrical workpiece around its axis. Structure of obtained alloy is a grain of molybdenum solid solution, around which are located two - and three - phase eutectics (Mo – Mo5SiB2), (Mo3Si - Mo5SiB2) and (Mo – Mo3Si – Mo5SiB2). Due to solid-hardening, the microhardness of molybdenum solid solution increases by more than 4 times compared with pure molybdenum. The crack growth resistance of eutectic areas lies within 14 MPa∙м1/2. It is shown that the directed crystallized Mo – Si – B alloy is characterized by increased resistance of creep, which indicates the perspective of its use in nodes of high – temperature appliance.

References

Lemberg J.A., Ritchie R.O. Advanced Materials, 2012, Vol. 24, № 26, pp. 3445 –3480.

https://doi.org/10.1002/adma.201200764

Rioult F.A., Imhoff S. D., Sakidja R. Transient oxidation of Mo–Si–B alloys, Acta Materialia, 2009, No 57, pp. 4600 – 4613.

https://doi.org/10.1016/j.actamat.2009.06.036

Park J. S., Materialia, 2002, No 46, pp. 765 – 770.

https://doi.org/10.1016/S1359-6462(02)00070-2

Potanin A.Y., Pogozhev Y.C., Levashov E.A., Ceramics International, 2017, No 43, pp. 10478 – 10486.

https://doi.org/10.1016/j.ceramint.2017.05.093

Sharma Paswan, Materials Science and Engineering, 2006, No 424, pp. 251–265.

https://doi.org/10.1016/j.msea.2006.03.014

Parthasarathy T.A., Acta Materialia, 2002, No 50, pp. 1857 – 1868.

https://doi.org/10.1016/S1359-6454(02)00039-3

Mendiratta M. G., Intermetallics, 2002, 10, pp. 225 – 232.

https://doi.org/10.1016/S0966-9795(01)00118-2

Supatarawanich V., Intermetallics 1, 2004, No 12, pp 721 – 725.

https://doi.org/10.1016/j.intermet.2004.02.011

Bogomol Y. I., Popovich O. I., Khazeman M., Naukovі vіstі Natsіonal'nogo tekhnіchnogo unіversitetu Ukraїni "Kiїvs'kiy polіtekhnіchniy іnstitut", 2016, No 106, pp. 69 –78.

Hasemann G., Bogomol I., Schliephake D. Intermetallics, 2014, No 48, pp. 28 – 33.

https://doi.org/10.1016/j.intermet.2013.11.022

Samsonov G.V. Handbook of the physicochemical properties of the elements. Edited by. New York: IFI/Plenum, 1968.

https://doi.org/10.1007/978-1-4684-6066-7

Pisarenko G. S., Agaev A. S., Kvitka A. L. Soprotivlenie materialov, Kiev: Vishcha shkola, 1986, 775 p.

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Published

2018-03-30

Issue

Vol. 24 No. 1 (2018): The Scientific Technical journal Metal Science and Treatment of Metals

Section

MELTING AND CRYSTALLIZATION

License

Copyright (c) 2018 M.I. Upatov, Yu.I. Bogomol, V.V. Bolbut, P.I. Loboda

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

The influence of melt mixing on the structure and properties of directed crystallized alloy Mo - 17,5Si - 8B. (2018). Scientific Technical Journal ‘’Metal Science and Treatment of Metals’’, 24(1), 22-29. https://doi.org/10.15407/mom2018.01.022

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