Effect of material microstructure on creep damage formation behavior for Ni-base directionally solidified superalloy

Go Ozeki; Ryuji Sugiura; Toshimitsu Yokobori; Yoshiko Nagumo; Hiroaki Takeuchi; Takashi Matsuzaki

doi:10.1115/PVP2013-97808

Effect of material microstructure on creep damage formation behavior for Ni-base directionally solidified superalloy

Go Ozeki, Ryuji Sugiura, Toshimitsu Yokobori, Yoshiko Nagumo, Hiroaki Takeuchi, Takashi Matsuzaki

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

1 Citation (Scopus)

Abstract

Ni-base directionally solidified superalloy strengthened by γ′ precipitates have been developed as a gas turbine blade. However, it is difficult to detect creep damage such as creep voids by conventional observation techniques. It is important to clarify the creep damage behavior for Ni-base superalloy. In this study, creep crack growth tests for Ni-base directionally solidified superalloy CM247LC were conducted using the in-situ observational system. Additionally, the metallographical investigation was conducted on crept specimen using EBSD analysis and relationship between creep crack growth path and material microstructure were clarified. And, in order to clarify the difference of creep crack growth behavior, the designed two-dimensional elastic-plastic creep finite element analyses were conducted for the model with grain distribution obtained by EBSD analysis.

Original language	English
Title of host publication	ASME 2013 Pressure Vessels and Piping Conference, PVP 2013
DOIs	https://doi.org/10.1115/PVP2013-97808
Publication status	Published - 2013 Dec 1
Event	ASME 2013 Pressure Vessels and Piping Conference, PVP 2013 - Paris, France Duration: 2013 Jul 14 → 2013 Jul 18

Publication series

Name	American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume	6 A
ISSN (Print)	0277-027X

Other

Other	ASME 2013 Pressure Vessels and Piping Conference, PVP 2013
Country/Territory	France
City	Paris
Period	13/7/14 → 13/7/18

ASJC Scopus subject areas

Mechanical Engineering

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10.1115/PVP2013-97808

Cite this

Ozeki, G., Sugiura, R., Yokobori, T., Nagumo, Y., Takeuchi, H., & Matsuzaki, T. (2013). Effect of material microstructure on creep damage formation behavior for Ni-base directionally solidified superalloy. In ASME 2013 Pressure Vessels and Piping Conference, PVP 2013 (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 6 A). https://doi.org/10.1115/PVP2013-97808

Effect of material microstructure on creep damage formation behavior for Ni-base directionally solidified superalloy. / Ozeki, Go; Sugiura, Ryuji; Yokobori, Toshimitsu; Nagumo, Yoshiko; Takeuchi, Hiroaki; Matsuzaki, Takashi.

ASME 2013 Pressure Vessels and Piping Conference, PVP 2013. 2013. (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 6 A).

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

Ozeki, G, Sugiura, R, Yokobori, T, Nagumo, Y, Takeuchi, H & Matsuzaki, T 2013, Effect of material microstructure on creep damage formation behavior for Ni-base directionally solidified superalloy. in ASME 2013 Pressure Vessels and Piping Conference, PVP 2013. American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, vol. 6 A, ASME 2013 Pressure Vessels and Piping Conference, PVP 2013, Paris, France, 13/7/14. https://doi.org/10.1115/PVP2013-97808

Ozeki G, Sugiura R, Yokobori T, Nagumo Y, Takeuchi H, Matsuzaki T. Effect of material microstructure on creep damage formation behavior for Ni-base directionally solidified superalloy. In ASME 2013 Pressure Vessels and Piping Conference, PVP 2013. 2013. (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP). https://doi.org/10.1115/PVP2013-97808

Ozeki, Go ; Sugiura, Ryuji ; Yokobori, Toshimitsu ; Nagumo, Yoshiko ; Takeuchi, Hiroaki ; Matsuzaki, Takashi. / Effect of material microstructure on creep damage formation behavior for Ni-base directionally solidified superalloy. ASME 2013 Pressure Vessels and Piping Conference, PVP 2013. 2013. (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP).

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AU - Takeuchi, Hiroaki

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AB - Ni-base directionally solidified superalloy strengthened by γ′ precipitates have been developed as a gas turbine blade. However, it is difficult to detect creep damage such as creep voids by conventional observation techniques. It is important to clarify the creep damage behavior for Ni-base superalloy. In this study, creep crack growth tests for Ni-base directionally solidified superalloy CM247LC were conducted using the in-situ observational system. Additionally, the metallographical investigation was conducted on crept specimen using EBSD analysis and relationship between creep crack growth path and material microstructure were clarified. And, in order to clarify the difference of creep crack growth behavior, the designed two-dimensional elastic-plastic creep finite element analyses were conducted for the model with grain distribution obtained by EBSD analysis.

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Effect of material microstructure on creep damage formation behavior for Ni-base directionally solidified superalloy

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