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Korean J. Met. Mater.
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Korean Journal of Metals and Materials
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Pre-weld Varestraint 시험을 이용한 CM247LC 초내열합금 보수용접부 액화균열 민감도 평가
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정예선, 정진곤, 김세윤, 배성환, 이의종, 이형수, 서성문, 천은준
Korean J. Met. Mater.
2022;60(4):272-281. Published online 2022 Mar 28
DOI:
https://doi.org/10.3365/KJMM.2022.60.4.272
Abstract
In this study, the liquation cracking susceptibility in the heat-affected zone of CM247LC superalloy gas turbine blades during repair welding was quantitatively evaluated using a newly developed pre-weld Varestraint test method. The repair welding geometry was replicated through Varestraint tests for the pre-weld bead. The liquation cracking susceptibility, that is,.....
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Web of Science 3
Crossref 5
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CM247LC 초내열합금 터빈 블레이드 용접 열영향부의 액화균열 발생 거동 및 민감도 평가
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정예선, 김경민, 이의종, 이형수, 서성문, 천은준
Korean J. Met. Mater.
2020;58(12):875-886. Published online 2020 Dec 4
DOI:
https://doi.org/10.3365/KJMM.2020.58.12.875
Abstract
In this study, the weldability of the as-cast CM247LC superalloy for turbine blade applications was metallurgically evaluated in terms of its hot cracking behavior and susceptibility. For this purpose, a real blade was manufactured using a directional solidification casting process, and gas tungsten arc welding was performed at the tip.....
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Web of Science 9
Crossref 11
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극초임계압 화력발전소용 마르텐사이트계 10Cr 내열강 열영향부의 용접후열처리 균열 감수성
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김민정, 강용준, 김남규, 이상훈, 송상우, 강남현
Korean J. Met. Mater.
2019;57(7):430-437. Published online 2019 Jun 5
DOI:
https://doi.org/10.3365/KJMM.2019.57.7.430
Abstract
In this study, the post-weld heat treatment (PWHT) cracking susceptibility in the heat affected zone (HAZ) of martensitic 10Cr steel was evaluated. The specimens taken from the 10Cr steel were thermally cycled using a Gleeble to simulate HAZ 1 (δ-ferrite) and HAZ 2 (single phase, γ). HAZ 2 had martensite.....
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Web of Science 5
Crossref 3
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