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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.1
- 수록면
- 69 - 74 (6page)
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In this study, the Mg97Zn1Y2–Al alloy was selected as a high damping material, anelastic and microplastic damping wereanalyzed by studying strain amplitude-dependent damping curves of the alloy. The C1and C2values of the Granato–Lücke(G–L) model, the theoretical basis of anelastic damping, can be calculated for each alloy, then, the corresponding numbersof strong and weak pinners are deduced. However, since the occurrence of microplastic damping in a high strain amplitudecannot be explained by the G–L model, a new microplastic damping theory was introduced, by comparing the activationvolume of the material dislocation slip, the microplastic damping capacity of the Mg97Zn1Y2–xwt%Al (x = 0.3, 1, 3) alloysat the microplastic stage are compared. The elastic and plastic deformation of the materials could be sensitively reflected bystudying the damping behavior of these two stages
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