Weldability of Low Carbon Steel with Al Coating Condition by Nd:YAG Laser

Fe-50%Al coatings were deposited on the surface of low-carbon steel using mechanical alloying technique atdifferent milling times. The correlation between structure and hardness of coating before and after heat treatment wasinvestigated. At the milling time of less than 180 min, the coating has an elongated lamellar structure. The size of elongatedlamellar structure decreased with increasing milling times which led to an increase in the hardness value of coating. Afterheat treatment, the coating transformed to FeAl intermetallic phase with a denser structure and uniform in the composition. Itaffected the hardness of coating. The hardness value of all samples after heat treatment was higher than coating after milling.The hardness of coating was strongly influenced by the morphology and phase of coating.

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Fabrication of Fe‒Al Coatings with Micro/Nanostructures for Antifouling Applications

Coatings ◽

10.3390/coatings10090902 ◽

2020 ◽

Vol 10 (9) ◽

pp. 902

Author(s):

Zhaorong He ◽

Dacheng Wang ◽

Zhiqing Fan ◽

Yingjun Chen ◽

Shidong Li ◽

...

Keyword(s):

Heat Transfer ◽

Contact Angle ◽

Carbon Steel ◽

Induction Period ◽

Low Carbon Steel ◽

Industrial Applications ◽

Polished Surface ◽

Low Carbon ◽

Antifouling Property ◽

Al Coating

Fouling is one of the common problems in heat-transfer applications, resulting in higher fouling resistance, and lower heat-transfer coefficient. This paper introduces the design and fabrication of an Fe–Al coating with micro/nanostructures on low-carbon steel by electrical discharge coating (EDC) technology to improve the antifouling property. The Fe–Al coating with micro/nanostructures is characterized by a large number of micro/nanostructures and superior anti-fouling property, which is attributed to its hydrophobic surface. The antifouling property, fouling induction period and contact angle of the Fe–Al coating with micro/nanostructures increase with the increasing gap voltage. Compared with the polished surface of low-carbon steel, the Fe–Al coating with micro/nanostructures extends the induction period from 214 to 1350 min, with a heat flux of 98 kW·m−2. After 50 adhesion tests, the contact angle of the Fe–Al coating with micro/nanostructures decreases from 6.81% to 27.52%, which indicates that the Fe–Al coating with micro/nanostructures is durable and suitable for industrial applications.

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Study of Twin Wire Arc Sprayed Zinc/Aluminum Coating on Low Carbon Steel Substrate: Application to Corrosion Protection

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.685.271 ◽

2013 ◽

Vol 685 ◽

pp. 271-276 ◽

Cited By ~ 2

Author(s):

S. Djerourou ◽

H. Lahmar ◽

N. Bouhellal ◽

Y. Mebdoua

Keyword(s):

Carbon Steel ◽

Steel Substrate ◽

Low Carbon Steel ◽

Xrd Analysis ◽

Sem Analysis ◽

Low Carbon ◽

Gravimetric Measurement ◽

Measurement Analysis ◽

Coating Microstructure ◽

Al Coating

Experimental study of twin wire arc sprayed Zn/Al coating on low carbon steel substrate has been undertaken in the present paper. The spray distances have a pronounced effect on the coating microstructure and it’s resistance against corrosion. Structural and surface morphological analyses of the Zn/Al coatings were performed using XRD, SEM, microhardness, metallographic microscope and gravimetric measurement analysis. The XRD analysis shows an effect only on the critallinity of the phases. The results obtained from SEM analysis show that the coating prepared at 100 mm present higher hardness, low porosity fraction compared to other prepared coatings. Metallographic microscopy and gravimetric measurement result reveals that the coating prepared at 100 mm present a best corrosion resistance when exposed to seawater solution. These studies have been made for a spray distance ranging from 100 to 140 mm.

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Equivalent Pulsed GMA Power to 2 kW CW Nd:YAG Laser Power in Welding of Carbon Steel and Al Alloy

Materials Science Forum ◽

10.4028/www.scientific.net/msf.580-582.463 ◽

2008 ◽

Vol 580-582 ◽

pp. 463-466

Author(s):

Guo Liang Qin ◽

Xu You Wang ◽

Shang Yang Lin

Keyword(s):

Carbon Steel ◽

Welding Speed ◽

Nd:Yag Laser ◽

Heat Input ◽

Laser Power ◽

Continuous Wave ◽

Low Carbon Steel ◽

Al Alloy ◽

Weld Penetration ◽

Low Carbon

Based on the bead on plate test and the effects of heat input on weld penetration, the equivalence between 2 kW CW (Continuous Wave) Nd:YAG laser power and pulsed GMA(Gas Metal Arc) power and the effect of welding speed on their equivalent ratios in welding carbon steel and Al alloy were studied. The studied results show that 9.8 kW pulsed GMA power is needed to reach the same weld penetration depth with 2 kW CW Nd:YAG laser power for welding of low carbon steel at v=1.2 m/min; for Al alloy, it is 3.92 kW pulsed GMA power. The equivalent ratios of 2 kW Nd:YAG laser power and pulsed GMA power are 4.9~6.4 and 1.85~2.1 times at different welding speed for low carbon steel and Al alloy, respectively. But their equivalent ratios have different variations with welding speed; at which the equivalent ratio of low carbon steel increases with welding speed and that of Al alloy decreases. The studied results offer the experimental boundary of heat input for analyzing the effect of Nd:YAG laser power and pulsed GMA power on laser+pulsed GMA hybrid welding process.

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CW Nd:YAG laser cutting of ultra low carbon steel thin sheets using O2 assist gas

Journal of Materials Processing Technology ◽

10.1016/j.jmatprotec.2007.05.013 ◽

2008 ◽

Vol 196 (1-3) ◽

pp. 64-72 ◽

Cited By ~ 19

Author(s):

Hanadi G. Salem ◽

Mohy S. Mansour ◽

Yehya Badr ◽

Wafaa A. Abbas

Keyword(s):

Carbon Steel ◽

Nd:Yag Laser ◽

Laser Cutting ◽

Low Carbon Steel ◽

Thin Sheets ◽

Low Carbon ◽

Ultra Low Carbon Steel

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Laser Surface Modification of AISI 1025 Low Carbon Steel Using Pulsed Nd:YAG Laser for Enhance Surface Properties

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.554-557.596 ◽

2013 ◽

Vol 554-557 ◽

pp. 596-602 ◽

Cited By ~ 3

Author(s):

Fazliana Fauzun ◽

Syarifah N. Aqida ◽

Md. Saidin bin Wahab

Keyword(s):

Grain Size ◽

Surface Modification ◽

Carbon Steel ◽

Nd:Yag Laser ◽

Low Carbon Steel ◽

Laser Surface ◽

Low Carbon ◽

Laser Surface Modification ◽

Metallographic Study ◽

Modified Layer

This paper presents laser surface modification of AISI 1025 low carbon steel for enhance surface hardness properties. An Nd:YAG laser system with pulse mode was used in order to modify 10mm thick plate surface. Three controlled parameters were laser power, pulse duration and overlap percentage which ranged from 100W to 200W, 0.4 to 1.0ms and 50% to 90% respectively. The treated samples was characterised for metallographic study and hardness. Metallographic study was conducted using optical microscope for laser modified layer thickness and grain size. Hardness properties were measured using Vickers indenter. The result show that hardness of laser treated area increased due to fine grain size produced in the laser modified layer. The overlapping rates increase significantly with decreasing laser scanning speed. These findings are important high wear applications.

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