Stick-slip dynamics in a Ni62Nb38 metallic glass film during nanoscratching

被引：31

作者：

Han, D. X. ^{[1
]}

Wang, G. ^{[1
]}

Ren, J. L. ^{[2
]}

Yu, L. P. ^{[2
]}

Yi, J. ^{[1
]}

Hussain, I. ^{[1
]}

Song, S. X. ^{[3
]}

Xu, H. ^{[1
]}

Chan, K. C. ^{[4
]}

Liaw, P. K. ^{[5
]}

机构：

[1] Shanghai Univ, Inst Mat, Lab Microstruct, Shanghai 200444, Peoples R China

[2] Zhengzhou Univ, Sch Math & Stat, Zhengzhou 450001, Henan, Peoples R China

[3] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China

[4] Hong Kong Polytech Univ, Dept Ind & Syst Engn, Hong Kong, Hong Kong, Peoples R China

[5] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

来源：

ACTA MATERIALIA | 2017年 / 136卷

基金：

美国国家科学基金会;

关键词：

Stick-slip dynamics; Metallic glass film; Nanoscratching; Self-similar behavior; Fractal dimension; TIME-SERIES; PLASTIC-DEFORMATION; LYAPUNOV EXPONENTS; FRACTAL DIMENSION; ROOM-TEMPERATURE; PRACTICAL METHOD; SHEAR BANDS; FLOW; BEHAVIOR; NANOCOMPOSITES;

D O I：

10.1016/j.actamat.2017.06.061

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Stick-slip dynamics during nanoscratching, is investigated for the Ni62Nb38 metallic glass. Detrended fluctuation analysis is introduced to explore the influence of loading force on the temporal scaling and stick-slip behavior. The self-similar characteristics and complexity in the temporal scale of the lateral force signal are investigated. A modified Cauchy class model is used for the stochastic stick-slip process, which connects the fractal dimension and the Hurst exponent and features the positive correlation process. The confidence intervals of the differential friction coefficient at different loading forces elucidate the inhomogeneous (and homogeneous) shear-branching processes during the nanoscratching process. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：49 / 60

页数：12

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