Correlation between microstructure evolution and creep of alloy 263

Hee Jeong Chung; Joo Youl Huh; Woo Sang Jung

doi:10.1016/j.matchar.2019.109847

Correlation between microstructure evolution and creep of alloy 263

Hee Jeong Chung, Joo Youl Huh, Woo Sang Jung

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

This study discusses the temperature dependence of deformation mechanisms and microstructure evolution during creep. Alloy 263 was investigated for creep under various conditions of applied stress and temperature until fracture. The crept microstructure was analyzed using electron microscopy. The analysis shows the phase reaction of MC + γ → M₂₃C₆ + (γ′, η) in creep condition takes place. Moreover, the precipitation of η, which has slower precipitation kinetics than γ′, was promoted by creep. Additionally, the interaction between γ′ and dislocations changed from shearing to by-passing with the increase of temperature because critical shear stress of each deformation mechanisms is dependent on temperature.

Original language	English
Article number	109847
Journal	Materials Characterization
Volume	156
DOIs	https://doi.org/10.1016/j.matchar.2019.109847
Publication status	Published - 2019 Oct

Keywords

Alloy 263
Creep
Eta
Gamma prime

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.matchar.2019.109847

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@article{a71eb087d0544acbbeda1d195cb4869b,

title = "Correlation between microstructure evolution and creep of alloy 263",

abstract = "This study discusses the temperature dependence of deformation mechanisms and microstructure evolution during creep. Alloy 263 was investigated for creep under various conditions of applied stress and temperature until fracture. The crept microstructure was analyzed using electron microscopy. The analysis shows the phase reaction of MC + γ → M23C6 + (γ′, η) in creep condition takes place. Moreover, the precipitation of η, which has slower precipitation kinetics than γ′, was promoted by creep. Additionally, the interaction between γ′ and dislocations changed from shearing to by-passing with the increase of temperature because critical shear stress of each deformation mechanisms is dependent on temperature.",

keywords = "Alloy 263, Creep, Eta, Gamma prime",

author = "Chung, {Hee Jeong} and Huh, {Joo Youl} and Jung, {Woo Sang}",

note = "Funding Information: We would like to acknowledge the financial support from the R&D Convergence Program of National Research Council of Science & Technology (Grant no. CAP16-08-KITECH) and Core Technology Development Program (Grant no. 10052860) of Ministry of Trade, Industry and Energy, Korea. We also thank Doosan Heavy Industries & Construction Co. Ltd. for providing the materials. Funding Information: We would like to acknowledge the financial support from the R&D Convergence Program of National Research Council of Science & Technology (Grant no. CAP16-08-KITECH ) and Core Technology Development Program (Grant no. 10052860 ) of Ministry of Trade, Industry and Energy, Korea . We also thank Doosan Heavy Industries & Construction Co., Ltd. for providing the materials. Publisher Copyright: {\textcopyright} 2019 Elsevier Inc.",

year = "2019",

month = oct,

doi = "10.1016/j.matchar.2019.109847",

language = "English",

volume = "156",

journal = "Materials Characterization",

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T1 - Correlation between microstructure evolution and creep of alloy 263

AU - Chung, Hee Jeong

AU - Huh, Joo Youl

AU - Jung, Woo Sang

N1 - Funding Information: We would like to acknowledge the financial support from the R&D Convergence Program of National Research Council of Science & Technology (Grant no. CAP16-08-KITECH) and Core Technology Development Program (Grant no. 10052860) of Ministry of Trade, Industry and Energy, Korea. We also thank Doosan Heavy Industries & Construction Co. Ltd. for providing the materials. Funding Information: We would like to acknowledge the financial support from the R&D Convergence Program of National Research Council of Science & Technology (Grant no. CAP16-08-KITECH ) and Core Technology Development Program (Grant no. 10052860 ) of Ministry of Trade, Industry and Energy, Korea . We also thank Doosan Heavy Industries & Construction Co., Ltd. for providing the materials. Publisher Copyright: © 2019 Elsevier Inc.

PY - 2019/10

Y1 - 2019/10

N2 - This study discusses the temperature dependence of deformation mechanisms and microstructure evolution during creep. Alloy 263 was investigated for creep under various conditions of applied stress and temperature until fracture. The crept microstructure was analyzed using electron microscopy. The analysis shows the phase reaction of MC + γ → M23C6 + (γ′, η) in creep condition takes place. Moreover, the precipitation of η, which has slower precipitation kinetics than γ′, was promoted by creep. Additionally, the interaction between γ′ and dislocations changed from shearing to by-passing with the increase of temperature because critical shear stress of each deformation mechanisms is dependent on temperature.

AB - This study discusses the temperature dependence of deformation mechanisms and microstructure evolution during creep. Alloy 263 was investigated for creep under various conditions of applied stress and temperature until fracture. The crept microstructure was analyzed using electron microscopy. The analysis shows the phase reaction of MC + γ → M23C6 + (γ′, η) in creep condition takes place. Moreover, the precipitation of η, which has slower precipitation kinetics than γ′, was promoted by creep. Additionally, the interaction between γ′ and dislocations changed from shearing to by-passing with the increase of temperature because critical shear stress of each deformation mechanisms is dependent on temperature.

KW - Alloy 263

KW - Creep

KW - Eta

KW - Gamma prime

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DO - 10.1016/j.matchar.2019.109847

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SN - 1044-5803

VL - 156

JO - Materials Characterization

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M1 - 109847

ER -

Correlation between microstructure evolution and creep of alloy 263

Abstract

Keywords

ASJC Scopus subject areas

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