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논문 기본정보
HSC발전소 터빈용 초내열합금 Alloy 617 및 263 용접부의 미세조직에 미치는 후열처리의 영향
논문 개요
| 기관명 | NDSL |
|---|---|
| 저널명 | Journal of welding and joining = 대한용접 middot;접합학회지 |
| ISSN | 2466-2232,2466-2100 |
| ISBN |
논문저자 및 소속기관 정보
| 저자(한글) | 김정길,심덕남,박해지 |
|---|---|
| 저자(영문) | |
| 소속기관 | |
| 소속기관(영문) | |
| 출판인 | |
| 간행물 번호 | |
| 발행연도 | 2016-01-01 |
| 초록 | Recently nickel based superalloys are extensively being regarded as the materials for the steam turbine parts for hyper super critical (HSC) power plants working at the temperature over $700^{ circ}C$ , since the materials have excellent strength and corrosion resistance in high temperature. In this paper, alloy 617 of solution strengthened material and alloy 263 of ${ gamma}^{ prime}$ -precipitation strengthened material were prepared as the testing materials for HSC plants each other. Post weld heat treatment (PWHT) was conducted with the gas tungsten arc (GTA) welded specimens. The microstructure of the base metals and weld metals were investigated with Electron Probe Micro-Analysis (EPMA) and Scanning Transmission Electron Microscope (STEM). The experimental results revealed that Ti-Mo carbides were formed in both of the base metals and segregation of Co and Mo in both of the weld metals before PWHT and PWHT leaded to precipitation of various carbides such as Mo carbides in the specimens. Furthermore, fine ${ gamma}^{ prime}$ particles, that were not precipitated in the specimens before PWHT, were observed in base metal as well as in the weld metal of alloy 263 after PWHT. |
| 원문URL | http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=03553784&target=NART&cn=JAKO201620340446102 |
| 첨부파일 |
추가정보
| 과학기술표준분류 | |
|---|---|
| ICT 기술분류 | |
| DDC 분류 | |
| 주제어 (키워드) | Hyper super critical power plant,Ni-based Superalloy, lt,TEX gt,${ gamma}^{ prime}$ lt,/TEX gt,(Gamma prime) Precipitation,Steam turbine rotor |