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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2016.1
- 수록면
- 1,026 - 1,032 (7page)
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The effect of the type of the crystalline phase and its volume fraction on the mechanical property ofCu50Zr50-xTix alloys (x = 0-10) bulk metallic glass composites has been investigated in this study. Up to 6at% of Ti, B19’ phase particles distributed in the glassy matrix, while at 8 and 10% of Ti, B2 phase particlesare retained in the glass matrix due to suppression of the eutectoid transformation of B2 phase and byavoidance of martensitic transformation of B2 into B19’. The volume fraction of crystalline phase is stronglydependent on the cooling rate. The larger volume fraction of the crystalline phases results in the loweryield stress, the higher plastic strain, and the more pronounced work hardening behavior. At the crystallinevolume fraction below ~30%, the variation of the yield strength can be described by the rule of mixturemodel (ROM), while at the crystalline volume fraction higher than ~50% by the load-bearing model (LBM). At the crystal fractions between 30 and 50%, there is a yield strength drop and a transition from the ROMto the LBM. This transition is due to the formation of the crystalline structural framework at higher crystalfraction.
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