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Title:
Characterization of nanoscale structural heterogeneity in an amorphous alloy by synchrotron small angle X-ray scattering
Author: Sun Xing; Mo Guang; Zhao Lin-Zhi; Dai LH(戴兰宏); Wu Zhong-Hua; Jiang MQ(蒋敏强)
Source: ACTA PHYSICA SINICA
Issued Date: 2017-09-05
Volume: 66, Issue:17
Abstract: Amorphous alloys are the glassy solids that are formed through the glass transition of high-temperature melts. They therefore inherit the long-ranger disorders of melts and many quenched-in defects such as free volume. This inevitably leads to structural heterogeneity on a nanoscale that is believed to be as fertile sites for initiating relaxation and flow. However, due to limitations of spatiotemporal measurements, experimental characterization of the nanoscale structural heterogeneity in amorphous alloys has faced a great challenges. In this paper, an in-situ tensile testing setup with synchrotron small angle X-ray scattering is designed for a Zr-based (Vitreloy 1) amorphous alloy. By the small angle X-ray scattering, the structural heterogeneity of the Vitreloy 1 amorphous alloy can be described by the fluctuation of electron density. The small angle scattering images are recorded with the charge coupled device (CCD) detector, and then are azimuthally integrated into the one-dimensional scattering intensity curves using the FIT2D software. We apply the Porod law, Guinier law and Debye law to the obtained scattering intensity curves, and attempt to obtain the information about structural heterogeneity in the Vitreloy 1 amorphous alloy at different stress levels.
Keyword: amorphous alloys ; nanoscale structural heterogeneity ; small angle X-ray scattering ; deformation
Language: 英语
Indexed Type: SCI ; EI ; CSCD
DOI: 10.7498/aps.66.176109
Related URLs: 查看原文
DOC Type: Article
WOS Subject: Physics, Multidisciplinary
WOS Subject Extended: Physics
WOS Keyword Plus: SHEAR TRANSFORMATION ZONES ; BULK METALLIC GLASSES ; PLASTIC-DEFORMATION ; SOLIDS ; DYNAMICS ; ORIGIN ; FLOW
WOS ID: WOS:000412842000009
ISSN: 1000-3290
Funder: National Natural Science Foundation of China(11522221 ; Key Research Program of Frontiers Sciences, Chinese Academy of Sciences(QYZDJSSW-JSC011) ; Strategic Priority Research Program of Chinese Academy of Sciences(XDB22040303) ; 11372315 ; 11472287)
Department: LNM冲击动力学与新型材料力学性能
Classification: Q4
Ranking: 1
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/70078
Appears in Collections:非线性力学国家重点实验室_期刊论文

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Recommended Citation:
Sun Xing,Mo Guang,Zhao Lin-Zhi,et al. Characterization of nanoscale structural heterogeneity in an amorphous alloy by synchrotron small angle X-ray scattering[J]. ACTA PHYSICA SINICA,2017-09-05,66(17).
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