Microstructure and wear property of carbon nanotube carburizing carbon steel by laser surface remelting

Yao, Jianhua; Zhang, Qunli; Gao, Mingxia; Zhang, Wei

doi:10.1016/j.apsusc.2008.05.223

Cited by 29 publications

(11 citation statements)

References 12 publications

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“…Apart from these examples, laser remelting process has been applied to many different types of alloys and coatings and the effect of this process on mechanical properties as well as on properties such as wear and corrosion resistance has been investigated. [20][21][22][23][24][25] Laser remelting process can overcome the shortcomings as a promising method compared to many surface modification methods. With laser remelting, it is possible to obtain layers of adjustable thickness from a few micrometers to a few millimeters, with good metallurgical bonding.…”

Section: Introductionmentioning

confidence: 99%

Laser Remelting Power Effect on Microstructure, Hardness and Wear Behavior of AISI 1020

Erdoğan

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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In this study, the effect of laser remelting on the microstructure, hardness, and wear properties of AISI 1020 steel was investigated. In this context, laser remelting process was carried out at different laser powers. The surface of steel was subjected to laser remelting process at 1, 1.3, and 1.8 kW powers. Thanks to the applied laser remelting surface modification, martensitic transformation was obtained in the pearlite+ferrite structure. Depending on the applied laser power, the transformation depth increased. The martensitic transformation was determined at a depth of 70 µm at the lowest laser power and 250 µm at the highest laser power. An increase up to 552 HV was achieved after the remelting process on the surface of AISI 1020 steel. Depending on the increasing laser power, the highest surface hardness values decreased. However, the hardness values obtained with increasing laser power were preserved at longer distances towards the center. In ball-on-disc tribology tests, laser remelting has been shown to reduce wear losses by up to 52%. The highest wear resistance was determined in the sample whose surface was modified with the lowest laser power. Laser remelted samples showed lower friction coefficient due to hardness and oxidation on their surfaces.

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Section: Introductionmentioning

confidence: 99%

Laser Remelting Power Effect on Microstructure, Hardness and Wear Behavior of AISI 1020

Erdoğan

2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…The holding time decreases for higher temperature exposure. The carbonaceous media can be assured by conventional procedures such as solid [8], liquid [9,10], gas [11,12], or ion [13] carburizing, while more contemporary techniques involve vacuum [14], and laser [15,16] respectively.…”

Section: Introductionmentioning

confidence: 99%

Investigation of hardness behavior after carburizing and hardening of 15CrNi6 steel

et al. 2021

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DIN 15CrNi6 is the most representative grade of the case-hardened steels. The present work analyses the influence of carburizing time on hardness of the specific steel. Specimens with similar chemical composition were heated at 900°C in liquid carbonaceous media for one, two, three and four hours, correspondingly. Then samples were oil quenched and tempered at 180°C for two hours. Microhardness was measured across the carburized zone and case profiles were acquired. The effective case depth was determined as function of carburizing holding time. Core macro hardness was carried out and the impact of holding time on the substrate hardness was discussed. The optimum case depth was defined and the carburizing parameters determined. The hardness control is critical in case hardening practice and results provide practical information to heat treaters, useful both to control the treatment parameters and to minimize the risk of failure.

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“…Nanomaterials used when making coatings and nanostructured layers are characterized by considerably higher abrasion resistance than that of traditional steelbased materials. However, because of high costs and the ongoing development of their production technology, nanostructured materials are not widely used in surfacing [30][31][32][33][34][35][36][37].…”

Section: Introductionmentioning

confidence: 99%

Assessment of the quality of abrasion-resistant plates welded joint

Górka

2020

J min metall B Metall

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The article presents the analysis of the structure and properties of joints made of abrasion-resistant plates having the structure of chromium cast iron and welded with filler metals, the use of which aimed to provide the high abrasion resistance of the surface layer and good mechanical properties of the base material. The face layer of the joint was made using the MMA (Manual Metal Arc) welding method and the Fe-Cr-Nb-B type nanocrystalline filler metal. The root weld was welded using an austenitic filler metal, whereas the filling layer was welded using the MAG method with a low-alloy filler metal. The joints were subjected to non-destructive tests (visual tests and penetrant tests) as well as to mechanical properties tests. The research involved macro and microscopic metallographic tests, the determination of the grain size using an Xpert PRO X-ray diffractometer, and the EDS analysis of the chemical composition of the precipitates. The assessment of the operational properties of the joints based on hardness measurements, static tensile tests, bend tests as well as identifying the metal-mineral abrasive wear resistance were performed in accordance with ASTM G65 ? 04 standards. The results of the abrasion resistance tests were referred to the HARDOX 400 steel reference specimen. Considering the tests results it was concluded that the used filler materials can assure the appropriate operational properties of welded abrasion-resistant plates.

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Microstructure and wear property of carbon nanotube carburizing carbon steel by laser surface remelting

Cited by 29 publications

References 12 publications

Laser Remelting Power Effect on Microstructure, Hardness and Wear Behavior of AISI 1020

Laser Remelting Power Effect on Microstructure, Hardness and Wear Behavior of AISI 1020

Investigation of hardness behavior after carburizing and hardening of 15CrNi6 steel

Assessment of the quality of abrasion-resistant plates welded joint

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