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Hye-Eun Jeong 2 Articles
69 Variation of liquation cracking susceptibility for over–aged 247LC superalloy repair weld heat–affected zone
장시간 열간노출에 따른 247LC 초내열합금 보수용접 열영향부의 액화균열민감도 변화
Hye-Eun Jeong, Seong-Moon Seo, Eun-Joon Chun
정혜은, 서성문, 천은준
Korean J. Met. Mater. 2023;61(2):69-75.   Published online 2023 Jan 27
DOI: https://doi.org/10.3365/KJMM.2023.61.2.69

In this study, the liquation cracking temperature range (LCTR) of over-aged 247LC superalloy repair welds was quantitatively evaluated using spot-Varestraint testing, especially for application in the repair weld heat-affected zone (HAZ). The metallurgical mechanism of the evaluated liquation cracking susceptibility and variation of the LCTRs of the over-aged 247LC superalloys..... More

698 Effect of ERNiFeCr-2 Filler Metal on Solidification Cracking Susceptibility of CM247LC Superalloy Welds
ERNiFeCr-2 용가재 적용에 따른 CM247LC 초내열합금 용접부 응고균열 민감도 변화 거동
Kyeong-Min Kim, Hye-Eun Jeong, Ye-Seon Jeong, Uijong Lee, Hyungsoo Lee, Seong-Moon Seo, Eun-Joon Chun
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

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..... More

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