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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.10
- 수록면
- 3,905 - 3,917 (13page)
- DOI
- 10.1007/s12540-020-00877-5
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초록· 키워드
오류제보하기
Creep properties of ZK60 alloy and ZK60/SiCw composite have been investigated after extrusion and precipitation hardeningby accelerated creep test. Creep tests were conducted at 150 °C in the stress range of 10?120 MPa. At low stresses, the stressexponents of 1.93 and 1.75 were obtained for the unreinforced alloy and the composite, respectively. Stress exponents of theunreinforced alloy and composite sample were 5.82 and 7.07, respectively, at high stresses. The creep mechanism changedby increasing the stress from grain boundary sliding (GBS) to dislocation creep due to the fact that the average true creepactivation energy changed from 55 to 95.06 kJ/mol. Based on the microstructural observations, at low stresses, the grainrefinement induced by twinning caused the GBS mechanism. However, at high stresses, slip changed from basal planes tothe pyramidal secondary slip system which was associated with increase in twin density. Examination of the fracture surfacesrevealed that cavity nucleation in the grain corners and around the precipitates was the main reason for creep failure.
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참고문헌 (48)
참고문헌 신청
E. Aghion / 2003 / The art of developing new magnesium alloys for high temperature applications / Mater. Sci. Forum 419?422:407~418
Y. Jingyuan / 2016 / Effect of Zn on microstructures and properties of Mg–Zn alloys prepared by powder metallurgy method / Rare Metal Mater. Eng 45:2757~2762
A. Galiyev / 2001 / Correlation of plastic deformation and dynamic recrystallization in magnesium alloy ZK60 / Acta Mater 49:1199~1207
J. D. Robson / 2015 / The interaction of grain refnement and ageing in magnesium–zinc–zirconium(ZK)alloys / Acta Mater 95:10~19
G. Sha / 2012 / Hydrogen-induced decomposition of Zr-rich cores in an Mg–6Zn–0.6Zr–0.5Cu alloy / Acta Mater 60:5615~5625
Y. Jingyuan / 2016 / Effect of Zn on microstructures and properties of Mg–Zn alloys prepared by powder metallurgy method / Rare Metal Mater. Eng 45:2757~2762
A. Galiyev / 2001 / Correlation of plastic deformation and dynamic recrystallization in magnesium alloy ZK60 / Acta Mater 49:1199~1207
J. D. Robson / 2015 / The interaction of grain refnement and ageing in magnesium–zinc–zirconium(ZK)alloys / Acta Mater 95:10~19
G. Sha / 2012 / Hydrogen-induced decomposition of Zr-rich cores in an Mg–6Zn–0.6Zr–0.5Cu alloy / Acta Mater 60:5615~5625
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