Neutron and synchrotron probes in the development of Co-Re-based alloys for next generation gas turbines with an emphasis on the influence of boron additives

D. Mukherji, R. Gilles, L. Karge, P. Strunz, P. Beran, H. Eckerlebe, A. Stark, L. Szentmiklósi, Z. MácSik, G. Schumacher, I. Zizak, M. Hofmann, M. Hoelzel, J. Rösler

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Nickel-based superalloys are the materials of choice in the hot section of current gas turbines, but they are reaching temperature limits constrained by their melting temperature range. Co-Re alloy development was prompted by a search for new materials for future gas turbines, where the temperature of application will be considerably higher. Addition of the very high melting point refractory metal Re to Co can increase the melting range of Co alloys to much higher temperatures than the commercial Co alloys in use today. The alloy development strategy is first discussed very briefly. In this program, model ternary and quaternary compositions were studied in order to develop a basic understanding of the alloy system. In situ neutron and synchrotron measurements (small and wide angle) at high temperatures were extensively used for this purpose and some selected results from the in situ measurements are presented. In particular, the effect of boron doping in Co-Re-Cr alloys and the stability of the TaC precipitates at high temperatures were investigated. A fine dispersion of TaC precipitates strengthens some Co-Re alloys, and their stability at the application temperature is critical for the long-term creep properties.

Original languageEnglish
Pages (from-to)1417-1430
Number of pages14
JournalJournal of Applied Crystallography
Volume47
Issue number4
DOIs
Publication statusPublished - 2014

Fingerprint

Synchrotrons
Boron
Neutrons
Gas turbines
Gases
Temperature
Freezing
Melting point
Precipitates
Refractory metals
Nickel
Superalloys
Creep
Melting
Metals
Doping (additives)
Chemical analysis

Keywords

  • boron additives
  • Co-Re alloys
  • gas turbines
  • neutron and synchrotron probes

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

Cite this

Neutron and synchrotron probes in the development of Co-Re-based alloys for next generation gas turbines with an emphasis on the influence of boron additives. / Mukherji, D.; Gilles, R.; Karge, L.; Strunz, P.; Beran, P.; Eckerlebe, H.; Stark, A.; Szentmiklósi, L.; MácSik, Z.; Schumacher, G.; Zizak, I.; Hofmann, M.; Hoelzel, M.; Rösler, J.

In: Journal of Applied Crystallography, Vol. 47, No. 4, 2014, p. 1417-1430.

Research output: Contribution to journalArticle

Mukherji, D, Gilles, R, Karge, L, Strunz, P, Beran, P, Eckerlebe, H, Stark, A, Szentmiklósi, L, MácSik, Z, Schumacher, G, Zizak, I, Hofmann, M, Hoelzel, M & Rösler, J 2014, 'Neutron and synchrotron probes in the development of Co-Re-based alloys for next generation gas turbines with an emphasis on the influence of boron additives', Journal of Applied Crystallography, vol. 47, no. 4, pp. 1417-1430. https://doi.org/10.1107/S1600576714013624
Mukherji, D. ; Gilles, R. ; Karge, L. ; Strunz, P. ; Beran, P. ; Eckerlebe, H. ; Stark, A. ; Szentmiklósi, L. ; MácSik, Z. ; Schumacher, G. ; Zizak, I. ; Hofmann, M. ; Hoelzel, M. ; Rösler, J. / Neutron and synchrotron probes in the development of Co-Re-based alloys for next generation gas turbines with an emphasis on the influence of boron additives. In: Journal of Applied Crystallography. 2014 ; Vol. 47, No. 4. pp. 1417-1430.
@article{74cd7797d37046cb97ae7b87657aa098,
title = "Neutron and synchrotron probes in the development of Co-Re-based alloys for next generation gas turbines with an emphasis on the influence of boron additives",
abstract = "Nickel-based superalloys are the materials of choice in the hot section of current gas turbines, but they are reaching temperature limits constrained by their melting temperature range. Co-Re alloy development was prompted by a search for new materials for future gas turbines, where the temperature of application will be considerably higher. Addition of the very high melting point refractory metal Re to Co can increase the melting range of Co alloys to much higher temperatures than the commercial Co alloys in use today. The alloy development strategy is first discussed very briefly. In this program, model ternary and quaternary compositions were studied in order to develop a basic understanding of the alloy system. In situ neutron and synchrotron measurements (small and wide angle) at high temperatures were extensively used for this purpose and some selected results from the in situ measurements are presented. In particular, the effect of boron doping in Co-Re-Cr alloys and the stability of the TaC precipitates at high temperatures were investigated. A fine dispersion of TaC precipitates strengthens some Co-Re alloys, and their stability at the application temperature is critical for the long-term creep properties.",
keywords = "boron additives, Co-Re alloys, gas turbines, neutron and synchrotron probes",
author = "D. Mukherji and R. Gilles and L. Karge and P. Strunz and P. Beran and H. Eckerlebe and A. Stark and L. Szentmikl{\'o}si and Z. M{\'a}cSik and G. Schumacher and I. Zizak and M. Hofmann and M. Hoelzel and J. R{\"o}sler",
year = "2014",
doi = "10.1107/S1600576714013624",
language = "English",
volume = "47",
pages = "1417--1430",
journal = "Journal of Applied Crystallography",
issn = "0021-8898",
publisher = "International Union of Crystallography",
number = "4",

}

TY - JOUR

T1 - Neutron and synchrotron probes in the development of Co-Re-based alloys for next generation gas turbines with an emphasis on the influence of boron additives

AU - Mukherji, D.

AU - Gilles, R.

AU - Karge, L.

AU - Strunz, P.

AU - Beran, P.

AU - Eckerlebe, H.

AU - Stark, A.

AU - Szentmiklósi, L.

AU - MácSik, Z.

AU - Schumacher, G.

AU - Zizak, I.

AU - Hofmann, M.

AU - Hoelzel, M.

AU - Rösler, J.

PY - 2014

Y1 - 2014

N2 - Nickel-based superalloys are the materials of choice in the hot section of current gas turbines, but they are reaching temperature limits constrained by their melting temperature range. Co-Re alloy development was prompted by a search for new materials for future gas turbines, where the temperature of application will be considerably higher. Addition of the very high melting point refractory metal Re to Co can increase the melting range of Co alloys to much higher temperatures than the commercial Co alloys in use today. The alloy development strategy is first discussed very briefly. In this program, model ternary and quaternary compositions were studied in order to develop a basic understanding of the alloy system. In situ neutron and synchrotron measurements (small and wide angle) at high temperatures were extensively used for this purpose and some selected results from the in situ measurements are presented. In particular, the effect of boron doping in Co-Re-Cr alloys and the stability of the TaC precipitates at high temperatures were investigated. A fine dispersion of TaC precipitates strengthens some Co-Re alloys, and their stability at the application temperature is critical for the long-term creep properties.

AB - Nickel-based superalloys are the materials of choice in the hot section of current gas turbines, but they are reaching temperature limits constrained by their melting temperature range. Co-Re alloy development was prompted by a search for new materials for future gas turbines, where the temperature of application will be considerably higher. Addition of the very high melting point refractory metal Re to Co can increase the melting range of Co alloys to much higher temperatures than the commercial Co alloys in use today. The alloy development strategy is first discussed very briefly. In this program, model ternary and quaternary compositions were studied in order to develop a basic understanding of the alloy system. In situ neutron and synchrotron measurements (small and wide angle) at high temperatures were extensively used for this purpose and some selected results from the in situ measurements are presented. In particular, the effect of boron doping in Co-Re-Cr alloys and the stability of the TaC precipitates at high temperatures were investigated. A fine dispersion of TaC precipitates strengthens some Co-Re alloys, and their stability at the application temperature is critical for the long-term creep properties.

KW - boron additives

KW - Co-Re alloys

KW - gas turbines

KW - neutron and synchrotron probes

UR - http://www.scopus.com/inward/record.url?scp=84905506382&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84905506382&partnerID=8YFLogxK

U2 - 10.1107/S1600576714013624

DO - 10.1107/S1600576714013624

M3 - Article

AN - SCOPUS:84905506382

VL - 47

SP - 1417

EP - 1430

JO - Journal of Applied Crystallography

JF - Journal of Applied Crystallography

SN - 0021-8898

IS - 4

ER -