Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5465648 | Surface and Coatings Technology | 2017 | 8 Pages |
Abstract
A new inverse method was proposed to calculate the anisotropic elastic-plastic properties (flow stress) of electrodeposited Ag thin coating utilizing nanoindentation tests, previously reported inverse method for isotropic materials and three-dimensional (3-D) finite element analyses (FEA). Indentation depth was ~ 4% of coating thickness (~ 10 μm) to avoid substrate effect and different indentation responses were observed in the longitudinal (L) and the transverse (T) directions. The estimated elastic-plastic properties were obtained in the newly developed inverse method by matching the predicted indentation responses in the L and T directions with experimental measurements considering indentation size effect (ISE). The results were validated with tensile flow curves measured from free-standing (FS) Ag film. The current method can be utilized to characterize the anisotropic elastic-plastic properties of coatings and to provide the constitutive properties for coating performance evaluations.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Guang Cheng, Xin Sun, Yuxin Wang, See Leng Tay, Wei Gao,