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Korean J. Met. Mater.
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Korean Journal of Metals and Materials
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단결정 Ni기 초합금의 결정방위에 따른 수소 취화 민감도 평가
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윤희수, 다오반헝, 권휴상, 이지훈, 남승훈
Korean J. Met. Mater.
2025;63(5):389-398. Published online 2025 May 5
DOI:
https://doi.org/10.3365/KJMM.2025.63.5.389
Abstract
As demand for hydrogen, a clean energy source, has increased, hydrogen embrittlement caused by hydrogen penetration into materials has became a major challenge. This study evaluated the effect of crystallographic orientation on hydrogen embrittlement sensitivity, using single-crystal Ni-based superalloys that are used in hydrogen gas turbines. The two crystallographic orientations.....
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미소 시편을 이용한 가스터빈 블레이드 사용품의 인장 및 미세조직 특성평가
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김영대, 하인생, 방지예, 정진성
Korean J. Met. Mater.
2022;60(11):865-871. Published online 2022 Oct 31
DOI:
https://doi.org/10.3365/KJMM.2022.60.11.865
Abstract
A gas turbine (GT) blade is a key hot-pass component for advanced GT engines, and should have stable properties under extreme conditions of 1,350°C and 3,600rpm, etc. The GT blade, after operating with nearly 800 equivalent start-stops (ES) or 24,000 equivalent operation hours (EOH), should be replaced due to degradation.....
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ERNiFeCr-2 용가재 적용에 따른 CM247LC 초내열합금 용접부 응고균열 민감도 변화 거동
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김경민, 정혜은, 정예선, 이의종, 이형수, 서성문, 천은준
Korean J. Met. Mater.
2021;59(10):698-708. Published online 2021 Sep 6
DOI:
https://doi.org/10.3365/KJMM.2021.59.10.698
Abstract
The metallurgical aspects of weld solidification cracking in Ni-based superalloys (with Ti+Al > 5 mass%) have not been widely investigated thus far. Herein, the solidification cracking susceptibility of the CM247LC superalloy and its welds with ERNiFeCr-2 filler wire was quantitatively evaluated using a novel modified Varestraint testing method, for the.....
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Crossref 3
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열처리 및 HIP 공정을 이용한 가스터빈 고온부품 재생시 미세조직 및 기계적 특성 변화
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장성용, 오기용
Korean J. Met. Mater.
2019;57(7):468-474. Published online 2019 Jun 5
DOI:
https://doi.org/10.3365/KJMM.2019.57.7.468
Abstract
The evolution of microstructure and mechanical characteristics during the rejuvenation of a hot gas pass component of a gas turbine was investigated with an actual service-exposed bucket in a power plant. Heat treatment and hot isostatic pressing processes were conducted to rejuvenate a hot gas pass component of a F.....
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Web of Science 1
Crossref 1
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