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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.1
- 수록면
- 218 - 222 (5page)
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초록· 키워드
오류제보하기
An oxide-dispersion-strengthened (ODS) layer was formed on Zircaloy-4 tubes by a laser beam scanningprocess to increase mechanical strength. Laser beam was used to scan the yttrium oxide (Y2O3)ecoatedZircaloy-4 tube to induce the penetration of Y2O3 particles into Zircaloy-4. Laser surface treatmentresulted in the formation of an ODS layer as well as microstructural phase transformation at the surfaceof the tube. The mechanical strength of Zircaloy-4 increased with the formation of the ODS layer. Thering-tensile strength of Zircaloy-4 increased from 790 to 870 MPa at room temperature, from 500 to575 MPa at 380 C, and from 385 to 470 MPa at 500 C. Strengthening became more effective as the testtemperature increased. It was noted that brittle fracture occurred at room temperature, which was notobserved at elevated temperatures. Resistance to dynamic high-temperature bursting improved. Theburst temperature increased from 760 to 830 C at a heating rate of 5 C/s and internal pressure of8.3 MPa. The burst opening was also smaller than those in fresh Zircaloy-4 tubes. This method is expectedto enhance the safety of Zr fuel cladding tubes owing to the improvement of their mechanicalproperties.
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등록된 정보가 없습니다.
참고문헌 (13)
참고문헌 신청
Y.-H. Koo / 2014 / KAERI's development of LWR accident-tolerant fuel / Nucl. Technol. 186:295~304
김현길 / 2014 / Microstructure and Mechanical Strength of Surface ODS Treated Zircaloy-4 Sheet Using Laser Beam Scanning / Nuclear Engineering and Technology 46(4):521~528
김현길 / 2016 / Development Status of Accident-tolerant Fuel for Light Water Reactors in Korea / Nuclear Engineering and Technology 48(1):1~15
Y.-I. Jung / 2017 / Strengthening of Zircaloy-4 using $Y_2O_3$ particles by a laser-beam-induced surface treatment process / Mater. Des. 116:325~330
Y.-I. Jung / 2018 / Surface treatment to form a dispersed $Y_2O_3$ layer on Zircaloy-4 tubes / Appl. Surf. Sci. 429:272~277
김현길 / 2014 / Microstructure and Mechanical Strength of Surface ODS Treated Zircaloy-4 Sheet Using Laser Beam Scanning / Nuclear Engineering and Technology 46(4):521~528
김현길 / 2016 / Development Status of Accident-tolerant Fuel for Light Water Reactors in Korea / Nuclear Engineering and Technology 48(1):1~15
Y.-I. Jung / 2017 / Strengthening of Zircaloy-4 using
Y.-I. Jung / 2018 / Surface treatment to form a dispersed
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