Surface Properties and Corrosion Behavior of Turn-Assisted Deep-Cold-Rolled AISI 4140 Steel

Abstract

In this research, the effect of various turn-assisted deep-cold-rolling process parameters on the residual stress, microstructure, surface hardness, surface finish, and corrosion behavior of AISI 4140 steel has been investigated. The examination of the surface morphology of the turned and processed samples was performed by using a scanning electron microscope, energy-dispersive spectroscopy, and atomic force microscopy. Response surface methodology and desirability function approach were used for reducing the number of experiments and finding local optimized conditions for parameters under the study. The results from the residual stress measurements indicate that the rolling force has the highest effect by generating a deeper layer of residual compressive stress. The outcomes of surface hardness and surface finish emphasize that rolling force and number of tool passes are the most significant parameters affecting the responses. Surface studies confirmed the corrosion and its intensity onto the metal surface, and according to atomic force microscopy studies, the surface had become remarkably rough after exposure to the corrosive medium. Improvements in surface microhardness from 225 to 305.8 HV, the surface finish from 4.84 down to 0.261 μm, and corrosion rate from 6.672 down to 3.516 mpy are observed for a specific set of parameters by turn-assisted deep-cold-rolling process. The multiresponse optimization for surface finish and corrosion rate together shows that a ball diameter of 10 mm, a rolling force of 325.75 N, initial roughness of 4.84 µm, and number of tool passes of 3 give better values for the two responses under consideration with composite desirability of 0.9939. Based on the experimental work at the optimum parameter setting, the absolute average error between the experimental and predicted values for the corrosion rate is calculated as 3.2%.

Deep Rolling Techniques: A Comprehensive Review of Process Parameters and Impacts on the Material Properties of Commercial Steels

“…Furthermore, in another work, P. R. Prabhu et al [46] discussed the influence of DR on surface properties along with the corrosion behavior of AISI 4140 steel. Their findings showed, among the considered DR control parameters, that the rolling force and rolling ball size along with the number of roll passes had a significant influence on surface properties, primarily roughness and hardness.…”

Analysis of the inhibiting action of pectin on corrosion of AISI1040 dual-phase steel with ferrite–martensite and ferrite–bainite structure: a comparison in 0.5 M sulphuric acid

“…Recently, multivariate techniques are frequently used in optimization studies because they require less time, reagents, and experimental work. The design of experiment is widely used as an empirical multivariate modelling strategy to graphically assess the link between various factors and outcome parameters for optimization [30][31][32][33][34][35][36]. Accessible designs are useful to notice the impacts of factors and their interactions on the measured responses with a moderately lower number of investigations and to create a numerical model.…”

Corrosion inhibition of ferrite bainite AISI1040 steel in H2SO4 using biopolymer

“…Although a lot of research articles have come out concerning the excellent blend of mechanical properties in DP steels (A. Karimi, S. Kheirandish, 2017;Basantia et al, 2021;Bilal et al, 2019;Fereiduni & Ghasemi Banadkouki, 2014;Kumar et al, 2019;Shahzad et al, 2018;Xiong et al, 2019;Zhao et al, 2019;Zhu, 2019), further examinations are important to discover the influence of phase constituents on the corrosion resistance properties (Bignozzi et al, 2020;Gürkan Aydın, 2019;Ma et al, 2020;P. R. Prabhu, Prabhu, Sharma et al, 2020;Zhang et al, 2020).…”