대한용접접합학회:학술대회논문집 (Proceedings of the KWS Conference)
- 대한용접접합학회 2003년도 춘계학술발표대회 개요집
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- Pages.40-42
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- 2003
니켈기 초내열합금 PTA용접부의 고온균열감수성과 고온연성거동에 관한 연구
A Study on Relationship between Hot Ductility Behavior and Hot Cracking Susceptibility in PTA Weld of Ni-based Superalloy
- 이청래 (한양대학교 대학원 재료공학과) ;
- 김성욱 (한양대학교 대학원 재료공학과) ;
- 최우혁 (한양대학교 대학원 재료공학과) ;
-
엄상호
(한양대학교 대학원 재료공학과) ;
-
이창희
(한양대학교 재료공학과) ;
- 김재철 (한전전력연구원 발전연구소) ;
-
최철
(한전전력연구원 발전연구소)
- Lee, Chung-Rae ;
- Kim, Sung-Wook ;
- Choi, Woo-Hyuk ;
-
Eom, Sang-Ho
;
-
Lee, Chang-Hee
;
- Kim, Jae-Chul ;
-
Choi, Chul
- 발행 : 2003.05.01
초록
In general, nickel-base superalloy has been extensively used as land-based gas turbine blades and vanes. Plasma transferred arc welding(PTAW) has been considered as a repair welding process of nickel-base superalloy. This research evaluated the relationship between hot ductility behavior and hot cracking susceptibility in nickel-base superalloys. Ductility recovery rate of nickel base superalloys was found to be poor due to incipient melting and constitutional liquation. This seems to increase the hot cracking susceptibility.
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