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2011
2006
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Magnesium alloys have been focussed for the applications for lightweight of vehicle and electronics due to their high strength, low specific density and good damping capacity. This paper deals with the creep strength of Mg-Nd-Zr-Zn alloy. For the alloy, pure magnesium(99.9%) was melt with atmosphere of 0.3%SF6 and 25%CO₂. After melting, 0.3% of zinc was inserted to stir for 10min at elevated temperature of 770℃. Master alloys of Mg-15%Nd and Mg-15%Zr were stirred in furnace. The creep tests were performed to obtain creep rate and rupture in the temperature range of 200 to 220℃ and 280 to 310℃ at an applied stress of 156 to 172MPa and 78 to 94MPa, respectively. The deformation mechanism was predicted dislocation climb from measured apparent activation energy and stress exponent. Also the increaser the temperature and stress the lower the stress exponent and activation energy. Finally, LMP parameter gives good information for the predicted creep rupture life.
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ABSTRACT
1. 서론
2. 실험
3. 실험결과 및 고찰
4. 결론
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참고문헌
참고문헌 (5)
참고문헌 신청
1. [단행본] - E. Ghali / 2000 / First Nagaoka International Workshop on Magnesium Platform Science and Technology / Nagaoka : 261 ~
2. [기타자료] - T.J.Ruden / 1994 / Albright, Advanced Mater &Processes, No. 6 : 28 ~
3. [단행본] - A.Finkel / 1997 / First Israeli Conference on Mganesium Science and Technology", Magnesium Research Institute / Beer-Sheva : 121 ~ 126
4. [학술지(정기간행물)] - E.M. La / 1910 / vol.A84 / Proc. Royal Soc.(London) 84 : 1 ~
5. [단행본] - F. Garofalo / 1965 / Fundamentals of Creep and Creep Rupture in Metals / The McMillan Co
2. [기타자료] - T.J.Ruden / 1994 / Albright, Advanced Mater &Processes, No. 6 : 28 ~
3. [단행본] - A.Finkel / 1997 / First Israeli Conference on Mganesium Science and Technology", Magnesium Research Institute / Beer-Sheva : 121 ~ 126
4. [학술지(정기간행물)] - E.M. La / 1910 / vol.A84 / Proc. Royal Soc.(London) 84 : 1 ~
5. [단행본] - F. Garofalo / 1965 / Fundamentals of Creep and Creep Rupture in Metals / The McMillan Co
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UCI(KEPA) : I410-ECN-0101-2013-581-001374953