Microstructure and Tensile Properties of a CoNi-Based Superalloy Fabricated by Selective Electron Beam Melting

Sean P. Murray; Kira M. Pusch; Andrew T. Polonsky; Chris J. Torbet; Gareth G.E. Seward; Peeyush Nandwana; Michael M. Kirka; Ryan R. Dehoff; Ning Zhou; Stéphane A.J. Forsik; William Slye; Tresa M. Pollock

doi:10.1007/978-3-030-51834-9_86

Microstructure and Tensile Properties of a CoNi-Based Superalloy Fabricated by Selective Electron Beam Melting

Sean P. Murray, Kira M. Pusch, Andrew T. Polonsky, Chris J. Torbet, Gareth G.E. Seward, Peeyush Nandwana, Michael M. Kirka, Ryan R. Dehoff, Ning Zhou, Stéphane A.J. Forsik, William Slye, Tresa M. Pollock

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

10 Scopus citations

Abstract

Successful application of selective electron beam melting to a novel CoNi-based superalloy named SB-CoNi-10 is demonstrated. Crack-free as-printed microstructures exhibit excellent ductilities above 30% and ultimate tensile strengths above 1.1 GPa at room temperature in tension. Conventional post-processing consisting of a super-solvus hot isostatic pressing (HIP), a solution heat treatment (SHT), and a low-temperature aging has been applied to remove microstructural inhomogeneities present in the as-printed microstructure. The microstructures of the as-printed and HIP+SHT+Aged alloys have been investigated to determine the effect of post-processing heat treatments on the nanoscale γ/γ^′ microstructure and the mesoscale grain structure. Tensile tests have been conducted at room temperature and elevated temperatures above 850 ^∘C to investigate mechanical properties in both the as-printed and HIP+SHT+Aged conditions. The high-temperature ductility and strength are strongly affected by the microstructure, with a mostly columnar-grained microstructure in the as-printed condition exhibiting superior ductility to the fully recrystallized microstructure in the HIP+SHT+Aged condition.

Original language	English
Title of host publication	Superalloys 2020 - Proceedings of the 14th International Symposium on Superalloys
Editors	Sammy Tin, Mark Hardy, Justin Clews, Jonathan Cormier, Qiang Feng, John Marcin, Chris O'Brien, Akane Suzuki
Publisher	Springer Science and Business Media Deutschland GmbH
Pages	880-890
Number of pages	11
ISBN (Print)	9783030518332
DOIs	https://doi.org/10.1007/978-3-030-51834-9_86
State	Published - 2020
Event	14th International Symposium on Superalloys, Superalloys 2021 - Seven Springs, United States Duration: Sep 12 2021 → Sep 16 2021

Publication series

Name	Minerals, Metals and Materials Series
ISSN (Print)	2367-1181
ISSN (Electronic)	2367-1696

Conference

Conference	14th International Symposium on Superalloys, Superalloys 2021
Country/Territory	United States
City	Seven Springs
Period	09/12/21 → 09/16/21

Funding

Acknowledgements Funding for this research was provided by a DoD Vannevar Bush Faculty Fellowship, Grant ONR N00014-18-3031. In addition, tuition and stipend funding was provided to S.P.M. by a DoD National Defense Science and Engineering Graduate Fellowship. This research was sponsored by the US Department of Energy, Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office, under contract DE-AC05-00OR22725 with UT-Battelle, LLC, and performed in partiality at the Oak Ridge National Laboratory’s Manufacturing Demonstration Facility, an Office of Energy Efficiency and Renewable Energy user facility. Thanks are due to Dr. Brent Goodlet for technical assistance with the RUS measurements. for this research was provided by a DoD Vannevar Bush Faculty Fellowship, Grant ONR N00014-18-3031. In addition, tuition and stipend funding was provided to S.P.M. by a DoD National Defense Science and Engineering Graduate Fellowship. This research was sponsored by the US Department of Energy, Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office, under contract DE-AC05-00OR22725 with UT-Battelle, LLC, and performed in partiality at the Oak Ridge National Laboratory?s Manufacturing Demonstration Facility, an Office of Energy Efficiency and Renewable Energy user facility. Thanks are due to Dr. Brent Goodlet for technical assistance with the RUS measurements.

Keywords

Additive manufacturing
CoNi-based superalloys
Keywords
Mechanical properties

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1007/978-3-030-51834-9_86

Cite this

Murray, S. P., Pusch, K. M., Polonsky, A. T., Torbet, C. J., Seward, G. G. E., Nandwana, P., Kirka, M. M., Dehoff, R. R., Zhou, N., Forsik, S. A. J., Slye, W., & Pollock, T. M. (2020). Microstructure and Tensile Properties of a CoNi-Based Superalloy Fabricated by Selective Electron Beam Melting. In S. Tin, M. Hardy, J. Clews, J. Cormier, Q. Feng, J. Marcin, C. O'Brien, & A. Suzuki (Eds.), Superalloys 2020 - Proceedings of the 14th International Symposium on Superalloys (pp. 880-890). (Minerals, Metals and Materials Series). Springer Science and Business Media Deutschland GmbH. https://doi.org/10.1007/978-3-030-51834-9_86

Murray, Sean P. ; Pusch, Kira M. ; Polonsky, Andrew T. et al. / Microstructure and Tensile Properties of a CoNi-Based Superalloy Fabricated by Selective Electron Beam Melting. Superalloys 2020 - Proceedings of the 14th International Symposium on Superalloys. editor / Sammy Tin ; Mark Hardy ; Justin Clews ; Jonathan Cormier ; Qiang Feng ; John Marcin ; Chris O'Brien ; Akane Suzuki. Springer Science and Business Media Deutschland GmbH, 2020. pp. 880-890 (Minerals, Metals and Materials Series).

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title = "Microstructure and Tensile Properties of a CoNi-Based Superalloy Fabricated by Selective Electron Beam Melting",

abstract = "Successful application of selective electron beam melting to a novel CoNi-based superalloy named SB-CoNi-10 is demonstrated. Crack-free as-printed microstructures exhibit excellent ductilities above 30% and ultimate tensile strengths above 1.1 GPa at room temperature in tension. Conventional post-processing consisting of a super-solvus hot isostatic pressing (HIP), a solution heat treatment (SHT), and a low-temperature aging has been applied to remove microstructural inhomogeneities present in the as-printed microstructure. The microstructures of the as-printed and HIP+SHT+Aged alloys have been investigated to determine the effect of post-processing heat treatments on the nanoscale γ/γ′ microstructure and the mesoscale grain structure. Tensile tests have been conducted at room temperature and elevated temperatures above 850 ∘C to investigate mechanical properties in both the as-printed and HIP+SHT+Aged conditions. The high-temperature ductility and strength are strongly affected by the microstructure, with a mostly columnar-grained microstructure in the as-printed condition exhibiting superior ductility to the fully recrystallized microstructure in the HIP+SHT+Aged condition.",

keywords = "Additive manufacturing, CoNi-based superalloys, Keywords, Mechanical properties",

author = "Murray, {Sean P.} and Pusch, {Kira M.} and Polonsky, {Andrew T.} and Torbet, {Chris J.} and Seward, {Gareth G.E.} and Peeyush Nandwana and Kirka, {Michael M.} and Dehoff, {Ryan R.} and Ning Zhou and Forsik, {St{\'e}phane A.J.} and William Slye and Pollock, {Tresa M.}",

note = "Publisher Copyright: {\textcopyright} 2020, The Minerals, Metals & Materials Society.; 14th International Symposium on Superalloys, Superalloys 2021 ; Conference date: 12-09-2021 Through 16-09-2021",

year = "2020",

doi = "10.1007/978-3-030-51834-9_86",

language = "English",

isbn = "9783030518332",

series = "Minerals, Metals and Materials Series",

publisher = "Springer Science and Business Media Deutschland GmbH",

pages = "880--890",

editor = "Sammy Tin and Mark Hardy and Justin Clews and Jonathan Cormier and Qiang Feng and John Marcin and Chris O'Brien and Akane Suzuki",

booktitle = "Superalloys 2020 - Proceedings of the 14th International Symposium on Superalloys",

}

Murray, SP, Pusch, KM, Polonsky, AT, Torbet, CJ, Seward, GGE, Nandwana, P , Kirka, MM , Dehoff, RR, Zhou, N, Forsik, SAJ, Slye, W & Pollock, TM 2020, Microstructure and Tensile Properties of a CoNi-Based Superalloy Fabricated by Selective Electron Beam Melting. in S Tin, M Hardy, J Clews, J Cormier, Q Feng, J Marcin, C O'Brien & A Suzuki (eds), Superalloys 2020 - Proceedings of the 14th International Symposium on Superalloys. Minerals, Metals and Materials Series, Springer Science and Business Media Deutschland GmbH, pp. 880-890, 14th International Symposium on Superalloys, Superalloys 2021, Seven Springs, United States, 09/12/21. https://doi.org/10.1007/978-3-030-51834-9_86

Microstructure and Tensile Properties of a CoNi-Based Superalloy Fabricated by Selective Electron Beam Melting. / Murray, Sean P.; Pusch, Kira M.; Polonsky, Andrew T. et al.
Superalloys 2020 - Proceedings of the 14th International Symposium on Superalloys. ed. / Sammy Tin; Mark Hardy; Justin Clews; Jonathan Cormier; Qiang Feng; John Marcin; Chris O'Brien; Akane Suzuki. Springer Science and Business Media Deutschland GmbH, 2020. p. 880-890 (Minerals, Metals and Materials Series).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Microstructure and Tensile Properties of a CoNi-Based Superalloy Fabricated by Selective Electron Beam Melting

AU - Murray, Sean P.

AU - Pusch, Kira M.

AU - Polonsky, Andrew T.

AU - Torbet, Chris J.

AU - Seward, Gareth G.E.

AU - Nandwana, Peeyush

AU - Kirka, Michael M.

AU - Dehoff, Ryan R.

AU - Zhou, Ning

AU - Forsik, Stéphane A.J.

AU - Slye, William

AU - Pollock, Tresa M.

PY - 2020

Y1 - 2020

N2 - Successful application of selective electron beam melting to a novel CoNi-based superalloy named SB-CoNi-10 is demonstrated. Crack-free as-printed microstructures exhibit excellent ductilities above 30% and ultimate tensile strengths above 1.1 GPa at room temperature in tension. Conventional post-processing consisting of a super-solvus hot isostatic pressing (HIP), a solution heat treatment (SHT), and a low-temperature aging has been applied to remove microstructural inhomogeneities present in the as-printed microstructure. The microstructures of the as-printed and HIP+SHT+Aged alloys have been investigated to determine the effect of post-processing heat treatments on the nanoscale γ/γ′ microstructure and the mesoscale grain structure. Tensile tests have been conducted at room temperature and elevated temperatures above 850 ∘C to investigate mechanical properties in both the as-printed and HIP+SHT+Aged conditions. The high-temperature ductility and strength are strongly affected by the microstructure, with a mostly columnar-grained microstructure in the as-printed condition exhibiting superior ductility to the fully recrystallized microstructure in the HIP+SHT+Aged condition.

AB - Successful application of selective electron beam melting to a novel CoNi-based superalloy named SB-CoNi-10 is demonstrated. Crack-free as-printed microstructures exhibit excellent ductilities above 30% and ultimate tensile strengths above 1.1 GPa at room temperature in tension. Conventional post-processing consisting of a super-solvus hot isostatic pressing (HIP), a solution heat treatment (SHT), and a low-temperature aging has been applied to remove microstructural inhomogeneities present in the as-printed microstructure. The microstructures of the as-printed and HIP+SHT+Aged alloys have been investigated to determine the effect of post-processing heat treatments on the nanoscale γ/γ′ microstructure and the mesoscale grain structure. Tensile tests have been conducted at room temperature and elevated temperatures above 850 ∘C to investigate mechanical properties in both the as-printed and HIP+SHT+Aged conditions. The high-temperature ductility and strength are strongly affected by the microstructure, with a mostly columnar-grained microstructure in the as-printed condition exhibiting superior ductility to the fully recrystallized microstructure in the HIP+SHT+Aged condition.

KW - Additive manufacturing

KW - CoNi-based superalloys

KW - Keywords

KW - Mechanical properties

UR - http://www.scopus.com/inward/record.url?scp=85091271490&partnerID=8YFLogxK

U2 - 10.1007/978-3-030-51834-9_86

DO - 10.1007/978-3-030-51834-9_86

M3 - Conference contribution

AN - SCOPUS:85091271490

SN - 9783030518332

T3 - Minerals, Metals and Materials Series

SP - 880

EP - 890

BT - Superalloys 2020 - Proceedings of the 14th International Symposium on Superalloys

A2 - Tin, Sammy

A2 - Hardy, Mark

A2 - Clews, Justin

A2 - Cormier, Jonathan

A2 - Feng, Qiang

A2 - Marcin, John

A2 - O'Brien, Chris

A2 - Suzuki, Akane

PB - Springer Science and Business Media Deutschland GmbH

T2 - 14th International Symposium on Superalloys, Superalloys 2021

Y2 - 12 September 2021 through 16 September 2021

ER -

Murray SP, Pusch KM, Polonsky AT, Torbet CJ, Seward GGE, Nandwana P et al. Microstructure and Tensile Properties of a CoNi-Based Superalloy Fabricated by Selective Electron Beam Melting. In Tin S, Hardy M, Clews J, Cormier J, Feng Q, Marcin J, O'Brien C, Suzuki A, editors, Superalloys 2020 - Proceedings of the 14th International Symposium on Superalloys. Springer Science and Business Media Deutschland GmbH. 2020. p. 880-890. (Minerals, Metals and Materials Series). doi: 10.1007/978-3-030-51834-9_86

Microstructure and Tensile Properties of a CoNi-Based Superalloy Fabricated by Selective Electron Beam Melting

Abstract

Publication series

Conference

Funding

Keywords

UN SDGs

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