2022
DOI: 10.1007/s12540-022-01250-4
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Quantifying Susceptibility to Solidification Cracking in Oscillated CM247LC Superalloy Welds via Varestraint Testing

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Cited by 8 publications
(10 citation statements)
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“…Generally, it has been well-known that molten pool oscillation in welding is a useful technology for changing the local solidification microstructure and morphology of SGBs [4,31,32]. Thus, to control the connected liquation cracking and correlated pipeline diffusion behaviours at SGBs, circular laser beam wobble welding was employed.…”
Section: Resultsmentioning
confidence: 99%
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“…Generally, it has been well-known that molten pool oscillation in welding is a useful technology for changing the local solidification microstructure and morphology of SGBs [4,31,32]. Thus, to control the connected liquation cracking and correlated pipeline diffusion behaviours at SGBs, circular laser beam wobble welding was employed.…”
Section: Resultsmentioning
confidence: 99%
“…Welding and joining are essential processes in blade manufacturing, and the soundness of the joint is directly related to the durability of the blade. However, the 247LC superalloy, which is known to be a difficult material to weld, suffers from hot weld cracking phenomena including solidification, liquation, and ductility-dip cracks [3][4][5][6]. These are also present in additive manufacturing processes [7][8][9][10].…”
Section: Introductionmentioning
confidence: 99%
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“…특히 블레 이드 내부의 중공설계는 블레이드 최종 제조단계에서 용접공정을 수반하게 되고, 터빈 운전시의 블레이드 내 구성은 해당 초내열합금의 용접건전성과 직결된다고 할 수 있다 4,5) . 본 연구에서 주목하고 있는 블레이드 소재 는 일방향응고용 247LC 초내열합금으로, 해당 소재는 용접 고온균열(응고 및 액화균열)에 취약한 소재로 잘 알려져 있다 6,7) . 본 저자는 247LC 초내열합금 용접부 의 응고 및 액화균열 민감도 최소화를 위한 용접야금학 적 인자 규명에 대한 다양한 선행연구 결과를 보고한 바 있다 4,5,[7][8][9][10][11] .…”
Section: 서 론unclassified
“…본 연구에서 주목하고 있는 블레이드 소재 는 일방향응고용 247LC 초내열합금으로, 해당 소재는 용접 고온균열(응고 및 액화균열)에 취약한 소재로 잘 알려져 있다 6,7) . 본 저자는 247LC 초내열합금 용접부 의 응고 및 액화균열 민감도 최소화를 위한 용접야금학 적 인자 규명에 대한 다양한 선행연구 결과를 보고한 바 있다 4,5,[7][8][9][10][11] . 가스텅스텐아크용접(Gas Tungsten Arc Welding, GTAW)을 이용한 Varestraint 시험으로부터,…”
Section: 서 론unclassified