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Effect of Single Crystal Growth and Solidification Grain Boundaries on Weld Solidification Cracking Behavior of CMSX-4 Superalloy
CMSX-4 초내열합금 용접 응고균열 거동에 미치는 단결정 성장 및 응고결정립계의 영향
Kyeong-Min Kim, Ye-Seon Jeong, D.V. Kiran, Suk-Hwan Kwon, Seong-Moon Seo, Eun-Joon Chun
김경민, 정예선, D.V. Kiran, 권석환, 서성문, 천은준
Korean J. Met. Mater. 2024;62(1):22-31.   Published online 2023 Dec 29
DOI: https://doi.org/10.3365/KJMM.2024.62.1.22

Abstract
Single-crystal superalloys have been popularly employed in high-temperature parts of gas turbines, such as blades. However, the welds of such alloys are highly susceptible to solidification cracking, which limits their applicability to high-temperature turbine blades. In this study, the effects of characteristics of weld solidification on solidification cracking susceptibilities (solidification..... More

                   Crossref 1
Method of Suppressing Solidification Cracking by Laser Surface Melting and Epitaxial Growth Behavior for Directionally Solidified 247LC Superalloy
레이저 급속 표면용융에 따른 일방향응고 247LC 초내열합금의 에피택셜 성장 및 응고균열 억제 방안
Kyeong-Min Kim, Eun-Joon Chun
김경민, 천은준
Korean J. Met. Mater. 2023;61(4):252-260.   Published online 2023 Mar 22
DOI: https://doi.org/10.3365/KJMM.2023.61.4.252

Abstract
In this study, the relationship between solidification cracking and epitaxial growth behavior with the high-speed laser surface melting of a directionally solidified 247LC superalloys was fundamentally and metallurgically investigated, to develop a successful welding procedure for the next generation of gas turbine blades. Under typical laser surface melting conditions (scan..... More

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