스크랩 불순물이 Zr 합금의 미세조직 및 기계적 특성에 미치는 영향

정구범; 김인원; 송재숙; 신평우; 홍순익

추천

검색

자료유형: 학술저널

저자정보: 정구범 (충남대학교 나노소재공학과) 김인원 (충남대학교 나노소재공학과) 송재숙 (충남대학교 나노소재공학과) 신평우 (창원대학교 금속재료공학전공) 홍순익 (충남대학교 나노소재공학과)

저널정보: 한국주조공학회 한국주조공학회지 (주조) 한국주조공학회지 제36권 제3호

발행연도: 2016.1

수록면: 81 - 87 (7page)

이용수

📌

연구주제

📖

연구배경

🔬

연구방법

🏆

연구결과

초록· 키워드

오류제보하기

In this study, the effect of scrap ratio on the mechanical properties of Zr alloys was studied. Oxygen content in the ingot cake increased rapidly with increasing fraction of scrap, which can be attributed to the surface oxide of scrap including small pieces of turning, chips, etc. Iron content did not increase much with the increasing addition of scrap, suggesting scrap materials was well reserved in the iron-free container. As-cast structure of Zr alloy with the scrap:sponge ratio displayed plate/or needle ${\alpha}$ phase and no appreciable change of the cast structure was observed with change of scrap fraction. The strength increases with increasing fraction of scrap, which can be attributed to the increase of oxygen content. The ductility decreased slightly with increase of scrap fraction. Dislocation-oxygen interaction is known to increase the strength at the expense of ductility. Ingot cake with intentionally added $Fe_2O_3$ exhibited the drastic decrease of the formability, even exhibited the brittle fracture behavior during rolling. The oxidation resistance, however, increased with the increase of scrap fraction because of high oxygen content, which may prevent more penetration and diffusion of oxygen into matrix.

#Zr alloy #Strength #Ductility #Oxygen #Recycling

참고문헌 (17)

참고문헌 신청

R. W. Cahn / 1996 / A Comprehensive Treatment, Structure and Properties of Non-Ferrous alloys / Materials Science and Technology 8:436

Hong SI / 2005 / Stress-induced reorientation of hydrides and mechanical properties of Zircaloy- 4 cladding tubes / J. Nucl. Mater 340:203~208

박경태 / 2012 / 지르코늄의 製造와 再活用技術 / 자원리싸이클링 21(5):18~30

Nuclear Zirconium Alloy Market / 2010 / Microstructure and Deformability of Cast Zr-Nb-Fe-O alloy with High Iron and Oxygen Content

Lee SY / 2009 / Circumferential creep properties of stress-relieved Zircaloy-4 and Zr- Nb-Sn-Fe cladding tubes / J. Nucl. Mater 392:63~69

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!