An improved method to estimate Young's modulus of Zr-based BMGs accounting for pile-up during nanoindentation

Zhang, Yichun; Shi, Tielin; Tang, Zi‐Rong; Liao, Guanglan

doi:10.1016/j.jnoncrysol.2015.07.031

Cited by 9 publications

(1 citation statement)

References 29 publications

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“…Nanoindentation technique, based on classic elastic contact theory and the Oliver and Pharr method, 9 has been proven to be an effective method to evaluate the mechanical behaviour of solids and films at nanoscale, owing to its extremely high load and displacement resolution. [10][11][12][13] Tsui et al 14 studied the residual stress in an aluminium alloy using nanoindentation technique, and pointed out residual stress had almost no effect on the nanohardness and Young's modulus, but significantly influence the load-displacement curve. According to this investigation, Suresh and Giannakopoulo, 15 Carlsson and Larsson, 16,17 Lee and Kwon 18 and Wang and Ozaki 19 proposed different models to estimate the residual stress.…”

Section: Introductionmentioning

confidence: 99%

Residual stress in low temperature carburised layer of austenitic stainless steel

Rong

Jiang

Gong

2016

Materials Science and Technology

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Microstructure, elements concentration and residual stress of a low temperature carburised layer on 316L austenitic stainless steel were investigated by optical microscopy, electron probe microanalysis, nanoindentation and X-ray diffraction (XRD). The results show that surface carbon concentration and nanohardness increase significantly after low temperature carburisation in the mixture gas of 30 vol.-% CO-30 vol.-% H 2 -40 vol.-%N 2 at 743 K for 20 h, while Young's modulus keeps unchanged. A finite element model was proposed to simulate the nanoindentation of unstressed carburised layer based on the results of nanoindentation experiments. Combined with the experimental and simulation results, the residual stress was calculated based on Suresh model, which agrees well with the corrected data by XRD method. The surface displacement around indenter was discussed.

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