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논문 기본정보
원전 이종금속 용접부의 장기 열적 시효에 따른 미세조직 및 기계적 특성변화에 관한 고찰
논문 개요
| 기관명 | NDSL |
|---|---|
| 저널명 | 한국압력기기공학회 논문집 = Transactions of the Korean society of pressure vessel and piping |
| ISSN | 1738-8333, |
| ISBN |
논문저자 및 소속기관 정보
| 저자(한글) | 최경준,유승창,김지현 |
|---|---|
| 저자(영문) | |
| 소속기관 | |
| 소속기관(영문) | |
| 출판인 | |
| 간행물 번호 | |
| 발행연도 | 2014-01-01 |
| 초록 | In this study, the metallurgical analysis and mechanical property measurement have been performed to investigate the effect of long-term thermal aging on the microstructural evolution in the fusion boundary region between weld metal and low alloy steel in dissimilar metal welds. A representative dissimilar weld mock-up made of Alloy 690-Alloy 152-A533 Gr. B was fabricated and aged at $450^{ circ}C$ for 2,750 hours. The microstructural characterization was conducted mainly near in a weld root region by using optical microscopy, scanning electron microscopy, transmission electron microscopy. And the mechanical properties were measured with Vickers microhardness test and nanoindentation method. A steep gradient was shown in the chemical composition profile across the interface between A533 Gr. B and Alloy 152. Type-II boundaries were found in weld side of DMW and the hardness was the highest at the narrow zone between Type-II boundary and fusion boundary. |
| 원문URL | http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=03553784&target=NART&cn=JAKO201404641500213 |
| 첨부파일 |
추가정보
| 과학기술표준분류 | |
|---|---|
| ICT 기술분류 | |
| DDC 분류 | |
| 주제어 (키워드) | 이종금속용접부,열적 시효,용접경계면,Type-II 경계면,크롬탄화물 석출물,미세경도,나노압입자 시험,Dissimilar metal weld,Thermal aging,Fusion boundary,Type-II boundary,Chromium carbide precipitate,Microhardness,Nanoindentation |