Microstructure Simulation and Experimental Research of as-Cast 42CrMo Steel during Quenching Process

Fu, Jia; Li, Yong Tang; Qi, Hui

doi:10.4028/www.scientific.net/amr.317-319.19

Cited by 7 publications

(4 citation statements)

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“…Without subsequent heat replenishment, the surface temperature of the oxide layer is low and its growth kinetics of rapid thermal oxidation is limited [26,27], which easily leads to a discontinuous and thin oxide layer. To solve the corrosion problem of rebar, many researchers have done many studies on how to improve the resistance to rusting, and the usual methods to prevent rusting are surface coating, galvanic protection, corrosion inhibitors and new rust inhibitors [28][29][30]. All these methods can play a role in preventing rusting of steel, but all of them have different degrees of defects in the implementation process.…”

Section: Introductionmentioning

confidence: 99%

Optimising the corrosion performance of hot-rolled steel bar in concrete

Zhou

Yin

Liu³

et al. 2022

Corrosion Engineering, Science and Technology

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To optimising the corrosion resistance mechanism of hot-rolled steel bar, the effects of different tempering temperatures and high-oxygen-rich oxidation times were studied by scanning electron microscopy, X-ray diffraction, Raman spectroscopy, electrochemical and atmospheric corrosion tests. The thickness of the oxide layer of the rebar could reach 10 μm and rarely corroded after high-oxygen-rich oxidation at 850°C for 1 s, which exhibits superior corrosion resistance. The electrochemical test results showed that the I corr value after 1 s of high-oxygen-rich oxidation at 850°C was about 0.02 mA cm −2 , which was 56.4% lower than that of the heated specimen at 685°C (0.045 mA cm −2 ). The results of Raman spectroscopy showed that the rust layer of the heated specimen at 685°C mainly consisted of α-Fe 2 O 3 , γ-FeOOH and α-FeOOH, and the oxidised layer after 1 s of high-oxygen-rich oxidation at 850°C mainly consisted of α-Fe 2 O 3 and Fe 3 O 4 , which maintained the original oxidised layer morphology.

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Section: Introductionmentioning

confidence: 99%

Optimising the corrosion performance of hot-rolled steel bar in concrete

Zhou

Yin

Liu³

et al. 2022

Corrosion Engineering, Science and Technology

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“…It becomes an important means to measure material properties and is widely used in the fields of medical devices, bio-engineering, aircraft and film material research. Material physical parameters can be calculated through various simulation methods to provide support for performance calculation [2][3][4][5]. Until now, there are many reports on micro-indentation [6][7][8], however, these researches are almost about the experimental analysis and its numerical calculation has not studies yet.…”

Section: Introductionmentioning

confidence: 99%

Micro-indentation hardness model of AISI1045 steel during micro-plasticity indentation experiment considering size effect

Zhang

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract:The analytical method is used to study micro-plasticity indentation and the increment equation is worked out by analyzing the contacted nodes between rigid indenter with material. Then the experiment under various maximum loads (50mN, 100mN, 200mN, 300mN, 400mN, 500mN and650mN) at the constant loading speed 9.6841mN/s is carried out on MCT-W501 micro-indentation tester and the constitutive equation of AISI1045 steel is obtained by Taylor equation. The experimental result shows great indentation size effects, so the intrinsic material length is introduced to accurately simulate the micro-indentation plasticity changes. Based on ABAQUS analyzing software, the equation obtained by experiment is input to simulate the loading curve between indentation load and indentation depth considering the effect of strain gradient. The result shows that the square of hardness relative value has a linear decrease with the increase of indentation diagonal. Based on the result of simulation and calculation, the final constitutive equation is proposed and the data of modified equation is quite coordinate with experimental and calculated data with relative error less than 4.92% thus the constitutive equation is verified.

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“…During cooling process at a constant rate, phase transformations occurred as well as performance parameters of different phases formed during quenching process. The theoretical analysis [17], microstructure simulation [17] and the experiment [16] of as-cast 42CrMo steele have been investigated, which helps us to investigate the medium-carbon alloy steel -AISI1050 steel. AISI1050 steel is mainly used to produce the train wheel, gear, friction disk and mandrel with small cross-sections [18].…”

Section: Introductionmentioning

confidence: 99%

Microstructure simulation and mechanical properties of aisi1050 disk during quenching process

Fu¹,

Li²,

Li³

et al. 2016

Proceedings of the 2016 International Conference on Innovative Material Science and Technology (IMST 2016)

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Microstructures of AISI1050 disk after quenching process (cooling from 880°C to 150°C by 6% AQ251 quenchant) were simulated by DEFORM-HT software, and the corresponding mechanical properties were calculated by the finite difference method (FDM). Above all, thermo-physical parameters and diagrams of CCT curve were calculated by JMATPRO software, and then the characterization of phase transformation and CCT curve were fatherly analyzed. Besides, the simulation of multi-phase microstructure considering initial thermo-physical parameters was realized by DEFORM-HT. The FDM method helps to obtain the volume fraction of single phase, and a weight function considering carbon equivalent of phases was introduced to predict the final hardness of multi-phase and quenched microstructure according to the single phase hardness simulated. This helps to explain the relationship between final hardness and various single phases.

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Microstructure Simulation and Experimental Research of as-Cast 42CrMo Steel during Quenching Process

Cited by 7 publications

References 0 publications

Optimising the corrosion performance of hot-rolled steel bar in concrete

Optimising the corrosion performance of hot-rolled steel bar in concrete

Micro-indentation hardness model of AISI1045 steel during micro-plasticity indentation experiment considering size effect

Microstructure simulation and mechanical properties of aisi1050 disk during quenching process

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