Local strain behavior of bulk metallic glasses under tension studied by in situ x-ray diffraction

Local strain behavior of bulk metallic glasses under tension studied by in situ x-ray diffraction
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原位 X 射线衍射研究块体金属玻璃在张力下的局部应变行为

DOI:
10.1063/1.3064136
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发表时间:
2009-01
影响因子:
4
通讯作者:
Jiang, J. Z.
Jiang, J. Z.
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Franz, H.;Lou, H. B.;He, Z. H.;Bednarcik, J.;Cao, Q. P.;Wang, X. D.;Jiang, J. Z.

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利用同步辐射原位衍射技术研究了Zr 62 Al 8 Ni 13 Cu 17、Cu 46 Zr 46 Al 8、Zr 48 Cu 43 Al 7Ag 2和La 62 Al 14(Cu 5/6 Ag 1/6)14 Co 5 Ni 5块体非晶合金(BMG)的单轴拉伸行为。结果表明,在低应力状态下,局部应变分布基本均匀。当应力接近断裂强度时,非均匀性明显。四种BMG的局部应变波动幅度可能与中程有序内过剩自由体积的分布有关。
The uniaxial tensile behavior of Zr62Al8Ni13Cu17, Cu46Zr46Al8, Zr48Cu43Al7Ag2, and La62Al14(Cu5/6Ag1/6)14Co5Ni5 bulk metallic glasses (BMGs) has been investigated by using in situ synchrotron radiation diffraction technique. It is found that the local strain is basically homogeneously distributed at low stress. However, heterogeneity appears obviously when the stress is close to the fracture strength. The amplitude of fluctuation in local strain for four BMGs could relate to the distribution of excess free volume within the medium range order.
原位 X 射线衍射研究块体金属玻璃的拉伸行为
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发表时间: 2007-08
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