Corrosion behavior of laser hardened 50CrMo4 (AISI 4150) steel: A depth-wise analysis

Maharjan, Niroj; Murugan, Vedigounder.; Zhou, Wei; Seita, Matteo

doi:10.1016/j.apsusc.2019.07.172

Cited by 14 publications

(5 citation statements)

References 25 publications

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“…This was attributed to the fact that high scanning speed caused insu cient diffusion of C and signi cantly affected the uniformity in the microstructure. The distribution of Cr was found to be more uniform after LSQ which was desirable in reducing the local corrosion caused by the presence of a large number of poor chromium regions [12,17]. Therefore, the corrosion resistance of mold steel can be signi cantly improved by LSQ treatment.…”

Section: Element Distributionmentioning

confidence: 98%

“…The surface properties depend on the microstructure in the quenched zone of the LSQ treated surface, which is characterized by the phase composition, the dissolution and diffusion of the initial carbides, the uniformity of element distribution and state of residual stresses. Niroj Maharjan et al [12] performed LSQ on AISI 4150 to enhance the corrosion resistance, and reported that formation of uniform protective oxide layer containing Cr in quenched surface was a key factor which resulted in enhancing the corrosion resistance of treated samples by about 3 times. Wei Zhang et al [13] combined element distribution and microstructure morphology demonstrated that laser heat treatment can effectively dissolve Ti and N elements in the alloy 800H phase.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Laser Energy Density On Carbide Dissolution, Element Distribution and Microstructure Evolution of AISI P20 Steel During Laser Surface Quenching

Zhang

Liu

et al. 2021

Preprint

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Laser surface quenching (LSQ) was performed on AISI P20 mould and hot-working die steel with an objective to improve surface characteristics. The steel was treated under three different process parameter conditions. The microstructure, element distribution and residual stresses were investigated through SEM, EDS and XRD analyses. The effect of laser energy density on carbide dissolution/ablation, microstructure evolution were thoroughly investigated. The dissolution/ablation of carbides significantly affected the formation of martensite and retained austenite, and the distribution of elements and phase in the microstructure. The results of the study and analyses of treated surface revealed that the LSQ treatment significantly improved the microstructure, eliminated the pores or other defects. Furthermore, the degree of carbide dissolution/ablation was closely related to the laser energy density. Comparing to Cr7C3, Cr3C2 was more difficult to dissolve at lower laser energy density. Thus, those incompletely dissolved Cr3C2 would hinder the growth of austenite and reduce the carbon content in austenite and lead to the formation of low-carbon martensite. The highest laser energy density (150 J/mm2), was able to produce finer microstructure and significantly reduced the inhomogeneity in distribution of Cr between the poor and the rich Cr areas.

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Section: Element Distributionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Effects of Laser Energy Density On Carbide Dissolution, Element Distribution and Microstructure Evolution of AISI P20 Steel During Laser Surface Quenching

Zhang

Liu

et al. 2021

Preprint

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“…The authors of [27] proposed another hypothesis, wherein they report that the increase in the corrosion resistance of steel after surface treatment using the laser texturing method is due to the formation of a protective oxide layer enriched with chromium, which forms on the surface of the alloy during laser processing. At the same time, it has been established that the grain size, the distribution of which varies significantly over the thickness of the sample, does not have a significant effect on the corrosion resistance of steel.…”

Section: Effect Of Laser Texturing On Corrosion Resistancementioning

confidence: 99%

Effect of Ultrasonic Cleaning after Laser Texturizing of Surface of AISI 316L Steel on the Degree of Wetting and Corrosion Resistance

Dasaev,

Kalakutskaya,

Zilova

et al. 2023

Coatings

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One of the most common current processing methods in various scientific studies is the modification of surfaces of various structural materials via laser radiation (laser ablation technique). The laser texturizing of metal surfaces is one of the promising applications for the creation of hydrophobic surfaces with a high water contact angle, increased corrosion resistance, and other properties. This paper reports the results of experimental studies to determine the effect of ultrasonic surface cleaning after laser texturizing on the degree of wetting and corrosion resistance of AISI 316L steel. The results show that ultrasonic cleaning leads to the removal of micro-/nano-sized particles formed on the surface following the laser texturizing of roughness. This effect, in turn, helps us to obtain higher values for the water contact angle and to increase the corrosion resistance.

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“…To increase the cutting die working life strong stainless steel is recommended [9]. The main objective of the paper was the analysis of how the values of the moment of die cut tightening force correlated with the die cutting speed both influence the wear of the knives on the die cut.…”

Section: Die Cut Repetitionmentioning

confidence: 99%

Research Regarding the Increase of Durability of Flexible Die Made from 50CrMo4 Used in the Typographic Industry

Neamțu

Mohora

Anania

et al. 2021

Metals

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A large amount of packaging used mainly in the food industry is obtained by technologies that involve the use of machines such as those that cut with flexible die. The durability of the flexible die is a very important aspect and in this regard the purpose of the research was to identify technologies for its development. Thus, the research considered the analysis of the durability of the knives made of 50CrMo4 steel considering hard chrome-plating treatment, as well as laser hardening of the knives. For the analysis of the durability of the tools, two technological parameters were considered, namely the moment of the tightening force, which had values in the range of 50 Nm–110 Nm, and the die cutting speed, which was adjusted to values in the range of 50–60 m/min. For the analysis of the durability of the flexible die, the wear of the tools was taken into account, as well as the maximum length of the die cut material.

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Corrosion behavior of laser hardened 50CrMo4 (AISI 4150) steel: A depth-wise analysis

Cited by 14 publications

References 25 publications

Effects of Laser Energy Density On Carbide Dissolution, Element Distribution and Microstructure Evolution of AISI P20 Steel During Laser Surface Quenching

Effects of Laser Energy Density On Carbide Dissolution, Element Distribution and Microstructure Evolution of AISI P20 Steel During Laser Surface Quenching

Effect of Ultrasonic Cleaning after Laser Texturizing of Surface of AISI 316L Steel on the Degree of Wetting and Corrosion Resistance

Research Regarding the Increase of Durability of Flexible Die Made from 50CrMo4 Used in the Typographic Industry

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