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Stress induced atomic-scale damage and relaxation in bulk metallic glasses

Liu, Zhiyuan ; Yang, Yong ; Lu, Jian ; Wang, Gongyao ; Liaw, Peter K. ; Liu, Chain-Tsuan

Journal of Alloys and Compounds, Dec 15, 2015, Vol.652, p.185(6) [Tạp chí có phản biện]

ISSN: 0925-8388

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  • Nhan đề:
    Stress induced atomic-scale damage and relaxation in bulk metallic glasses
  • Tác giả: Liu, Zhiyuan ; Yang, Yong ; Lu, Jian ; Wang, Gongyao ; Liaw, Peter K. ; Liu, Chain-Tsuan
  • Chủ đề: Metallic Glasses – Electric Properties ; Building Materials – Electric Properties ; Biomedical Engineering – Electric Properties
  • Là 1 phần của: Journal of Alloys and Compounds, Dec 15, 2015, Vol.652, p.185(6)
  • Mô tả: To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.jallcom.2015.08.176 Byline: Zhiyuan Liu, Yong Yang, Jian Lu, Gongyao Wang, Peter K. Liaw, Chain-Tsuan Liu Abstract: The nanoscale Electric Contact Resistance (nanoECR) system with a high resolution is used to study the possible structural change in bulk metallic glasses (BMGs) after stimulation of cyclic stress. It is found that the electrical current traveling through the fatigue-tested Zr.sub.50Cu.sub.40Al.sub.10 BMG specimen is much lower than that of as-cast one at the same electric voltage. Excluding the effect of sample geometry, it is revealed that the increase in the electric resistivity of the fatigue-tested BMG is due to a more disordered structure. Furthermore, our results show pronounced atomic-scale damage and relaxation in the fatigue-tested BMG, shedding quantitative insights into the process of structural evolution in BMGs under cyclic loadings. Author Affiliation: (a) Shenzhen Key Laboratory of Advanced Manufacturing Technology for Mold & Die, Department of Mechanical and Electronic Engineering, Shenzhen University, Shenzhen, China (b) Centre for Advanced Structural Materials, Department of Mechanical and Biomedical Engineering, College of CSE, City University of Hong Kong, Kowloon Tong, Hong Kong, China (c) Department of Materials Science and Engineering, The University of Tennessee, Knoxville, TN 37996, USA Article History: Received 30 June 2015; Revised 20 August 2015; Accepted 21 August 2015
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 0925-8388

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