Effect of laser surface cleaning of corroded 304L stainless steel on microstructure and mechanical properties

Yoo, Hyun Jong; Baek, Seungwoo; Kim, Jeoung Han; Choi, Jiyeon; Kim, Yoon Jun; Park, Changkyoo

doi:10.1016/j.jmrt.2021.11.147

Cited by 21 publications

(5 citation statements)

References 53 publications

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“…On the other hand, stainless steel including SS316L and SS304 are suitable substrate materials due to the Cr oxide-passive layer formed on its surface, improving its corrosion resistance [54]. Because of this, stainless steels are chosen by researchers as substrate materials during laser deposition.…”

Section: Ferrous-alloy Substrates and Coatingsmentioning

confidence: 99%

“…Nevertheless, these latter types may be prone to sensitisation when operating at higher temperatures for a prolonged time. Yoo et al [54] revealed that SS304L contains Cr- element that offers significant corrosion resistance, but it often precipitates along the grain boundaries when exposed to temperatures reaching 870°C, which they attribute to the depletion of Cr along the zone close to the grain boundary, causing inter-granular corrosion in heat exchanger tubes. For instance, Rezakhani [55] analysed the corrosion behaviour of FeCrAl coating deposited on SA213-T11 steel via the thermal spray technique for boiler tubes operating at elevated temperatures.…”

Section: Materials Selection For Heat Exchangersmentioning

confidence: 99%

“…This could be because chlorine reduced the amount of chromium in the coating, causing a significant mass change as shown in Figures 9 and 10. Yoo et al [54] also mentioned that 304L stainless steel is often used in heat exchangers because it contains Cr and Ni, which are responsible for high corrosion resistance due to the Cr oxide formed on the surface as a passive layer. They further revealed that this Cr could be eroded when operating at elevated temperatures at hostile environmental conditions, leading to corrosion attacks in severe environmental conditions.…”

Section: Materials Selection For Heat Exchangersmentioning

confidence: 99%

See 2 more Smart Citations

The potential use of laser cladded functionally graded materials to mitigate degradation in boiler tube heat exchangers for power plant applications: A review

Morake,

Mutua,

Ruthandi

et al. 2023

Surface Engineering

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Surface modification is essential to safeguard heat exchangers from premature failure spurred by deterioration mechanisms such as corrosion and wear, which diminish performance. Meanwhile, modifying some substrates with dissimilar materials is challenging due to a mismatch in material properties. Moreover, individual alloy coatings on substrates are usually insufficient in the required material properties, leading to accelerated failure of equipment, especially in power plant industries. This article summarised the knowledge base on functionally graded materials (FGMs) while emphasising how this promising class of novel materials can reduce deterioration. Additionally, laser cladding is established to be a suitable technique for processing FGMs. A particular focus is laid on the laser beam interaction with the FGM and expounding on the processing and material parameters that affect the microstructural properties of FGMs. The development prospects for processing FGMs with superior clad quality characteristics to increase boiler pipes' service life and performance are also highlighted.

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Section: Ferrous-alloy Substrates and Coatingsmentioning

confidence: 99%

Section: Materials Selection For Heat Exchangersmentioning

confidence: 99%

Section: Materials Selection For Heat Exchangersmentioning

confidence: 99%

See 1 more Smart Citation

The potential use of laser cladded functionally graded materials to mitigate degradation in boiler tube heat exchangers for power plant applications: A review

Morake,

Mutua,

Ruthandi

et al. 2023

Surface Engineering

View full text Add to dashboard Cite

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“…A. L. Schawlow invented laser cleaning in 1965 by using a ruby-pulsed laser to remove black pigments from paper in a targeted manner [ 23 ]. Since then, the laser-controlled cleaning technology has been applied to a variety of cleaning tasks, including the cleaning of artworks [ 24 ], artifacts [ 25 ], and glass surfaces [ 26 ], the removal of radionuclides [ 27 ], the decarburization of tire-abrasive surfaces [ 28 ], the removal of rust from carbon steel or stainless steel surfaces [ 29 , 30 ], and the removal of oxide films and paint layers from aluminum alloy surfaces [ 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Research Progress and Challenges in Laser-Controlled Cleaning of Aluminum Alloy Surfaces

et al. 2022

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Aluminum alloys have been widely utilized in automobiles, aircraft, building structures, and high-speed railways industries due to their excellent structural and mechanical properties. Surface oxide film removal prior to aluminum alloy welding and old paint removal prior to repainting aluminum alloy surfaces are critical factors in ensuring the welding quality and service life of aluminum alloy products. Because of its unique advantages, such as environmental protection and precision control, laser-controlled cleaning has great application potential as a surface cleaning technology in removing oxide films and paint layers on aluminum alloy surfaces. In this paper, the mechanism of laser cleaning of oxide films and paint layers on aluminum alloy is discussed. Furthermore, the impact of various processing parameters such as laser beam power, energy density, scanning speed, and so on is analyzed in detail. After laser cleaning, the corrosion resistance, welding performance, adhesive performance, and other properties of the aluminum alloy are optimized. This paper also discusses several real-time detection technologies for laser cleaning. A summary and the development trend are provided at the end of the paper.

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“…Laser cleaning is the technique to remove contaminants from surfaces by laser ablation, which occurs when a high-energy laser pulse irradiates the sample surface [ 1 ]. Laser ablation removes contaminants via the materials’ evaporation and volatilization.…”

Section: Introductionmentioning

confidence: 99%

Convolution Neural Network with Laser-Induced Breakdown Spectroscopy as a Monitoring Tool for Laser Cleaning Process

Choi

Park

2022

Sensors

Self Cite

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In this study, eight different painted stainless steel 304L specimens were laser-cleaned using different process parameters, such as laser power, scan speed, and the number of repetitions. Laser-induced breakdown spectroscopy (LIBS) was adopted as the monitoring tool for laser cleaning. Identification of LIBS spectra with similar chemical compositions is challenging. A convolutional neural network (CNN)-based deep learning method was developed for accurate and rapid analysis of LIBS spectra. By applying the LIBS-coupled CNN method, the classification CNN model accuracy of laser-cleaned specimens was 94.55%. Moreover, the LIBS spectrum analysis time was 0.09 s. The results verified the possibility of using the LIBS-coupled CNN method as an in-line tool for the laser cleaning process.

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Effect of laser surface cleaning of corroded 304L stainless steel on microstructure and mechanical properties

Cited by 21 publications

References 53 publications

The potential use of laser cladded functionally graded materials to mitigate degradation in boiler tube heat exchangers for power plant applications: A review

The potential use of laser cladded functionally graded materials to mitigate degradation in boiler tube heat exchangers for power plant applications: A review

Research Progress and Challenges in Laser-Controlled Cleaning of Aluminum Alloy Surfaces

Convolution Neural Network with Laser-Induced Breakdown Spectroscopy as a Monitoring Tool for Laser Cleaning Process

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