Open AccessExperimental Characterisation and Numerical Modelling of the Effect of Cold Rolling on the Nanoindentation Response of Pure Zinc Grains
Author(s) -
P. T. N. Nguyen,
Fazilay Abbès,
Boussad Abbès,
Jean-Sébastien Lecomte
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/540/1/012011
Subject(s) - nanoindentation , indentation , materials science , crystal plasticity , finite element method , plasticity , slip (aerodynamics) , composite material , critical resolved shear stress , hardening (computing) , strain hardening exponent , crystallography , structural engineering , thermodynamics , shear rate , chemistry , physics , layer (electronics) , viscosity , engineering
In this study, the orientation-dependent response of as-received annealed cold-rolled pure zinc and material with thickness reduction rate of 50% grains using instrumented indentation tests is investigated. The experiments were characterized by orientation microscopy and atomic force microscopy scans to quantify the orientation-dependent mechanical response during nanoindentation. The single crystal hardening parameters are then identified for each family of slip system by using crystal plasticity finite element (CPFE) simulations. Comparison between experimental and numerical results in terms of “load-penetration depth” curves show a good agreement. The increased percentage of cold reduction increases the identified critical resolved shear stress (CRSS). Finally, the accuracy of the model is evaluated by comparing experimental and numerical data issued from nanoindentation response grains of distinct crystalline orientations involving different slip systems activity rates.