Self-healing behavior of Inconel 617B superalloy

Seok Hyeon Kang; Sukjin Lee; Jin Yoo Suh; Han Jin Kim; Young Kook Lee

doi:10.1016/j.jallcom.2019.07.204

Self-healing behavior of Inconel 617B superalloy

Seok Hyeon Kang, Sukjin Lee, Jin Yoo Suh, Han Jin Kim, Young Kook Lee

Department of Materials Science and Engineering

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

4 Citations (Scopus)

Abstract

In the present study, the self-healing behavior of Inconel 617B superalloy (617B), used as a high-temperature material, was investigated through both preliminary test consisting of room-temperature tension and annealing and creep rupture test. Micro-cracks in the solution-treated specimen, which had been fractured at room temperature, were filled in by the precipitation of M₂₃C₆ and the segregation of B, C, and S after annealing at 800 °C for 16 h. Due to this healing effect and dislocation recovery, a 33% pre-strained and annealed specimen exhibited the longer total elongation, compared to the specimen strained until fracture without annealing after 33% pre-strain. Finally, creep rupture tests revealed that the creep strength of 617B is higher than Inconel 617 superalloy (617) due to the self-healing effect by the high-temperature precipitation of M₂₃C₆ and the segregation of B, C, and S as well as grain boundary strengthening of B and C.

Original language	English
Pages (from-to)	1217-1223
Number of pages	7
Journal	Journal of Alloys and Compounds
Volume	805
DOIs	https://doi.org/10.1016/j.jallcom.2019.07.204
Publication status	Published - 2019 Oct 15

Bibliographical note

Funding Information:
We are thankful to Dr. Chang-Seok Oh (Korea Institute of Materials Science, Changwon), Mr. Young-Kwang Kim, and Professor Byeong-Joo Lee (Pohang University of Science and Technology, Pohang) for their assistances with thermodynamic calculations using Thermo-Calc software (database TTNI6). This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.

Publisher Copyright:
© 2019 Elsevier B.V.

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.jallcom.2019.07.204

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title = "Self-healing behavior of Inconel 617B superalloy",

abstract = "In the present study, the self-healing behavior of Inconel 617B superalloy (617B), used as a high-temperature material, was investigated through both preliminary test consisting of room-temperature tension and annealing and creep rupture test. Micro-cracks in the solution-treated specimen, which had been fractured at room temperature, were filled in by the precipitation of M23C6 and the segregation of B, C, and S after annealing at 800 °C for 16 h. Due to this healing effect and dislocation recovery, a 33% pre-strained and annealed specimen exhibited the longer total elongation, compared to the specimen strained until fracture without annealing after 33% pre-strain. Finally, creep rupture tests revealed that the creep strength of 617B is higher than Inconel 617 superalloy (617) due to the self-healing effect by the high-temperature precipitation of M23C6 and the segregation of B, C, and S as well as grain boundary strengthening of B and C.",

author = "Kang, {Seok Hyeon} and Sukjin Lee and Suh, {Jin Yoo} and Kim, {Han Jin} and Lee, {Young Kook}",

note = "Funding Information: We are thankful to Dr. Chang-Seok Oh (Korea Institute of Materials Science, Changwon), Mr. Young-Kwang Kim, and Professor Byeong-Joo Lee (Pohang University of Science and Technology, Pohang) for their assistances with thermodynamic calculations using Thermo-Calc software (database TTNI6). This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors. Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

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doi = "10.1016/j.jallcom.2019.07.204",

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AU - Kang, Seok Hyeon

AU - Lee, Sukjin

AU - Suh, Jin Yoo

AU - Kim, Han Jin

AU - Lee, Young Kook

N1 - Funding Information: We are thankful to Dr. Chang-Seok Oh (Korea Institute of Materials Science, Changwon), Mr. Young-Kwang Kim, and Professor Byeong-Joo Lee (Pohang University of Science and Technology, Pohang) for their assistances with thermodynamic calculations using Thermo-Calc software (database TTNI6). This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors. Publisher Copyright: © 2019 Elsevier B.V.

PY - 2019/10/15

Y1 - 2019/10/15

N2 - In the present study, the self-healing behavior of Inconel 617B superalloy (617B), used as a high-temperature material, was investigated through both preliminary test consisting of room-temperature tension and annealing and creep rupture test. Micro-cracks in the solution-treated specimen, which had been fractured at room temperature, were filled in by the precipitation of M23C6 and the segregation of B, C, and S after annealing at 800 °C for 16 h. Due to this healing effect and dislocation recovery, a 33% pre-strained and annealed specimen exhibited the longer total elongation, compared to the specimen strained until fracture without annealing after 33% pre-strain. Finally, creep rupture tests revealed that the creep strength of 617B is higher than Inconel 617 superalloy (617) due to the self-healing effect by the high-temperature precipitation of M23C6 and the segregation of B, C, and S as well as grain boundary strengthening of B and C.

AB - In the present study, the self-healing behavior of Inconel 617B superalloy (617B), used as a high-temperature material, was investigated through both preliminary test consisting of room-temperature tension and annealing and creep rupture test. Micro-cracks in the solution-treated specimen, which had been fractured at room temperature, were filled in by the precipitation of M23C6 and the segregation of B, C, and S after annealing at 800 °C for 16 h. Due to this healing effect and dislocation recovery, a 33% pre-strained and annealed specimen exhibited the longer total elongation, compared to the specimen strained until fracture without annealing after 33% pre-strain. Finally, creep rupture tests revealed that the creep strength of 617B is higher than Inconel 617 superalloy (617) due to the self-healing effect by the high-temperature precipitation of M23C6 and the segregation of B, C, and S as well as grain boundary strengthening of B and C.

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Self-healing behavior of Inconel 617B superalloy

Abstract

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