On the Effect of Nb on the Microstructure and Properties of Next Generation Polycrystalline Powder Metallurgy Ni-Based Superalloys

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On the Effect of Nb on the Microstructure and Properties of Next Generation Polycrystalline Powder Metallurgy Ni-Based Superalloys. / Christofidou, Katerina A.; Hardy, Mark C.; Li, Hang-yue; Argyrakis, Christos; Kitaguchi, Hiroto; Jones, Nicholas G.; Mignanelli, Paul M.; Wilson, Alison S.; Messé, Olivier M. D. M.; Pickering, Ed J.; Gilbert, Robert J.; Rae, Cathie M. F.; Yu, Suyang; Evans, Alex; Child, Daniel; Bowen, Paul; Stone, Howard J.

In: Metallurgical and Materials Transactions A, Vol. 49, No. 9, 23.05.2018, p. 3896-3907.

Research output: Contribution to journalArticlepeer-review

Harvard

Christofidou, KA, Hardy, MC, Li, H, Argyrakis, C, Kitaguchi, H, Jones, NG, Mignanelli, PM, Wilson, AS, Messé, OMDM, Pickering, EJ, Gilbert, RJ, Rae, CMF, Yu, S, Evans, A, Child, D, Bowen, P & Stone, HJ 2018, 'On the Effect of Nb on the Microstructure and Properties of Next Generation Polycrystalline Powder Metallurgy Ni-Based Superalloys', Metallurgical and Materials Transactions A, vol. 49, no. 9, pp. 3896-3907. https://doi.org/10.1007/s11661-018-4682-4

APA

Christofidou, K. A., Hardy, M. C., Li, H., Argyrakis, C., Kitaguchi, H., Jones, N. G., Mignanelli, P. M., Wilson, A. S., Messé, O. M. D. M., Pickering, E. J., Gilbert, R. J., Rae, C. M. F., Yu, S., Evans, A., Child, D., Bowen, P., & Stone, H. J. (2018). On the Effect of Nb on the Microstructure and Properties of Next Generation Polycrystalline Powder Metallurgy Ni-Based Superalloys. Metallurgical and Materials Transactions A, 49(9), 3896-3907. https://doi.org/10.1007/s11661-018-4682-4

Vancouver

Author

Christofidou, Katerina A. ; Hardy, Mark C. ; Li, Hang-yue ; Argyrakis, Christos ; Kitaguchi, Hiroto ; Jones, Nicholas G. ; Mignanelli, Paul M. ; Wilson, Alison S. ; Messé, Olivier M. D. M. ; Pickering, Ed J. ; Gilbert, Robert J. ; Rae, Cathie M. F. ; Yu, Suyang ; Evans, Alex ; Child, Daniel ; Bowen, Paul ; Stone, Howard J. / On the Effect of Nb on the Microstructure and Properties of Next Generation Polycrystalline Powder Metallurgy Ni-Based Superalloys. In: Metallurgical and Materials Transactions A. 2018 ; Vol. 49, No. 9. pp. 3896-3907.

Bibtex

@article{84a05360d6ba4acf970724a49fe24526,
title = "On the Effect of Nb on the Microstructure and Properties of Next Generation Polycrystalline Powder Metallurgy Ni-Based Superalloys",
abstract = "The effect of Nb on the properties and microstructure of two novel powder metallurgy (P/M) Ni-based superalloys was evaluated, and the results critically compared with the Rolls-Royce alloy RR1000. The Nb-containing alloy was found to exhibit improved tensile and creep properties as well as superior oxidation resistance compared with both RR1000 and the Nb-free variant tested. The beneficial effect of Nb on the tensile and creep properties was due to the microstructures obtained following the post-solution heat treatments, which led to a higher γ′ volume fraction and a finer tertiary γ′ distribution. In addition, an increase in the anti-phase-boundary energy of the γ′ phase is also expected with the addition of Nb, further contributing to the strength of the material. However, these modifications in the γ′ distribution detrimentally affect the dwell fatigue crack-growth behavior of the material, although this behavior can be improved through modified heat treatments. The oxidation resistance of the Nb-containing alloy was also enhanced as Nb is believed to accelerate the formation of a defect-free Cr2O3 scale. Overall, both developmental alloys, with and without the addition of Nb, were found to exhibit superior properties than RR1000.",
author = "Christofidou, {Katerina A.} and Hardy, {Mark C.} and Hang-yue Li and Christos Argyrakis and Hiroto Kitaguchi and Jones, {Nicholas G.} and Mignanelli, {Paul M.} and Wilson, {Alison S.} and Mess{\'e}, {Olivier M. D. M.} and Pickering, {Ed J.} and Gilbert, {Robert J.} and Rae, {Cathie M. F.} and Suyang Yu and Alex Evans and Daniel Child and Paul Bowen and Stone, {Howard J.}",
year = "2018",
month = may,
day = "23",
doi = "10.1007/s11661-018-4682-4",
language = "English",
volume = "49",
pages = "3896--3907",
journal = "Metallurgical and Materials Transactions A",
issn = "1073-5623",
publisher = "ASM International",
number = "9",

}

RIS

TY - JOUR

T1 - On the Effect of Nb on the Microstructure and Properties of Next Generation Polycrystalline Powder Metallurgy Ni-Based Superalloys

AU - Christofidou, Katerina A.

AU - Hardy, Mark C.

AU - Li, Hang-yue

AU - Argyrakis, Christos

AU - Kitaguchi, Hiroto

AU - Jones, Nicholas G.

AU - Mignanelli, Paul M.

AU - Wilson, Alison S.

AU - Messé, Olivier M. D. M.

AU - Pickering, Ed J.

AU - Gilbert, Robert J.

AU - Rae, Cathie M. F.

AU - Yu, Suyang

AU - Evans, Alex

AU - Child, Daniel

AU - Bowen, Paul

AU - Stone, Howard J.

PY - 2018/5/23

Y1 - 2018/5/23

N2 - The effect of Nb on the properties and microstructure of two novel powder metallurgy (P/M) Ni-based superalloys was evaluated, and the results critically compared with the Rolls-Royce alloy RR1000. The Nb-containing alloy was found to exhibit improved tensile and creep properties as well as superior oxidation resistance compared with both RR1000 and the Nb-free variant tested. The beneficial effect of Nb on the tensile and creep properties was due to the microstructures obtained following the post-solution heat treatments, which led to a higher γ′ volume fraction and a finer tertiary γ′ distribution. In addition, an increase in the anti-phase-boundary energy of the γ′ phase is also expected with the addition of Nb, further contributing to the strength of the material. However, these modifications in the γ′ distribution detrimentally affect the dwell fatigue crack-growth behavior of the material, although this behavior can be improved through modified heat treatments. The oxidation resistance of the Nb-containing alloy was also enhanced as Nb is believed to accelerate the formation of a defect-free Cr2O3 scale. Overall, both developmental alloys, with and without the addition of Nb, were found to exhibit superior properties than RR1000.

AB - The effect of Nb on the properties and microstructure of two novel powder metallurgy (P/M) Ni-based superalloys was evaluated, and the results critically compared with the Rolls-Royce alloy RR1000. The Nb-containing alloy was found to exhibit improved tensile and creep properties as well as superior oxidation resistance compared with both RR1000 and the Nb-free variant tested. The beneficial effect of Nb on the tensile and creep properties was due to the microstructures obtained following the post-solution heat treatments, which led to a higher γ′ volume fraction and a finer tertiary γ′ distribution. In addition, an increase in the anti-phase-boundary energy of the γ′ phase is also expected with the addition of Nb, further contributing to the strength of the material. However, these modifications in the γ′ distribution detrimentally affect the dwell fatigue crack-growth behavior of the material, although this behavior can be improved through modified heat treatments. The oxidation resistance of the Nb-containing alloy was also enhanced as Nb is believed to accelerate the formation of a defect-free Cr2O3 scale. Overall, both developmental alloys, with and without the addition of Nb, were found to exhibit superior properties than RR1000.

U2 - 10.1007/s11661-018-4682-4

DO - 10.1007/s11661-018-4682-4

M3 - Article

VL - 49

SP - 3896

EP - 3907

JO - Metallurgical and Materials Transactions A

JF - Metallurgical and Materials Transactions A

SN - 1073-5623

IS - 9

ER -