Numerical Simulation of Traditional and Technological Zinc‐Based Coatings: Part I

Abstract

Herein, the bending behavior of a hot‐rolled hyper‐sandelin steel subjected to hot‐dip galvanizing (HDG) is numerically simulated. Two coating types are analyzed, that is, a pure zinc coating and a zinc‐based coating with 3% Sn addition by weight. It is experimentally observed that the tin addition influences the thickness of each intermetallic phase and increases the ductility of the intermetallic phases. Therefore, the key of the numerical simulation is to assume suitable constitutive laws to phase layers, by considering that only few mechanical parameters are available in the literature. Such an approach has shown quite satisfactory results and it can be promising as a numerical tool to be used by HDG industry, being quite simple but quite accurate to estimate flexural strength and damage of Zn‐based coated steels.

Numerical Simulation of Traditional and Technological Zinc‐Based Coatings: Part II

“…The galvanizing process is described in detail in ref. [24]. The samples were submitted to five different dipping times, and more precisely, 15, 60, 180, 360, and 900 s.…”

“…In Figure 12, the results obtained by using the model B, in terms of bending moment against the half bending angle, are reported for technological bath characterized by dipping times equal to 15, 60, 180, 360, and 900 s, and then compared with both the experimental results and the numerical results obtained by using the FE model reported in ref. [24]. As it has been proved for model A (see Section 5.1) that the random field does not influence the global bending behavior of the model, only one simulation is performed for each case.…”

“…5) For each dipping time examined, the numerical results are in agreement with the experimental ones reported in ref. [24].…”

“…The numerical results, obtained by the numerical hybrid models developed, and related to the global bending behavior of coated plates, are compared with both experimental data [17,23,45,46] and other previous numerical results obtained by some of the present authors. [24] Moreover, the numerical crack patterns are compared with the experimental observations of the longitudinal section of the plates at the end of testing, by means of a light optical microscope. [17,23,45,46] The article is organized as follows.…”

“…Figure 8. Bending moment versus half bending angle in the case of pure zinc baths characterized by dipping times of a) 60 s, b) 180 s, c) 360 s, and d) 900 s. Experimental data, numerical results obtained by the FE model reported in ref [24],. and numerical results obtained by the hybrid model A are reported.…”