Exponential decay of shearing stress during jerky flows in a Zr-based bulk metallic glass | Zendy

Junwei Qiao | Zendy; Z. Wang | Zendy; Haisheng Yang | Zendy; M. Li | Zendy; Weiquan Liang | Zendy; Bingshe Xu | Zendy

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Exponential decay of shearing stress during jerky flows in a Zr-based bulk metallic glass

Author(s) -

Junwei Qiao,

Z. Wang,

Haisheng Yang,

M. Li,

Weiquan Liang,

Bingshe Xu

Publication year - 2013

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4794725

Subject(s) - shearing (physics) , exponential function , materials science , exponential decay , shear (geology) , amorphous metal , metal , composite material , shear stress , mechanics , thermodynamics , metallurgy , physics , mathematics , mathematical analysis , nuclear physics , alloy

Presently, an exponential decay of shearing stresses with the time during jerky flows in a Zr-based bulk metallic glass is revealed. The flow stresses with the time satisfy the following equation: σ = A · e−B · x, where A = −158.24*exp ( − N/47.60) + 1939.63 (N = 1, 2, 3…), and the mean value of obtained B is −0.13 with a Normal distribution. During jerky flows, the viscous shearing layer is formed, and the exponential decay of shear banding is present. The evolvement of shear bands is explained by the consumption of free volumes during flows

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