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Jingon Jeong 1 Article
272 Evaluation of Liquation Cracking Susceptibility of CM247LC Superalloy Repair Welds via Pre-Weld Varestraint Test
Pre-weld Varestraint 시험을 이용한 CM247LC 초내열합금 보수용접부 액화균열 민감도 평가
Ye-Seon Jeong, Jingon Jeong, Se-Yun Kim, Sung-Hwan Bae, Uijong Lee, Hyungsoo Lee, Seong-Moon Seo, Eun-Joon Chun
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,..... More

                        
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