The Effect of Laser Surface Treatment on Structure and Mechanical Properties Aluminium Alloy ENAC-AlMg9

Pakieła, Wojciech; Dobrzański, L. A.; Labisz, K.; Tański, Tomasz; Basa, Kishor K.; Roszak, Marek

doi:10.1515/amm-2016-0221

Cited by 10 publications

(8 citation statements)

References 9 publications

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“…10). It was not observed in solidification molten pool the defects in the form of cracks, voids or craters which could adversely affect the strength properties of the obtained layer [18,19]. The transition zone between the substrate material and the obtained layer was less enriched in phases containing Cr and Ni.…”

Section: Resultsmentioning

confidence: 93%

“…The use of a fiber laser with rectangular spot gives possibilities to obtain surface layer that is characterized by a uniform distribution of introduced elements, short time of heat source interaction on the workpiece, and the possibility of introducing a very wide range of alloy elements [18,19]. During the laser surface treatment of the aluminum alloy a mixture of nickel and chromium powders was introduced.…”

Section: Introductionmentioning

confidence: 99%

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The structure and mechanical properties of AlMg5Si2Mn alloy after surface alloying by the use of fiber laser

et al. 2018

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Laser surface treatment is successfully applied to increase hardness as well as corrosion and wear resistance in light alloys such as aluminum or magnesium. The laser surface remelting also can be used to repair superficial cracks, voids or porosity caused by the mechanical impact, metallurgical process as well as the corrosive environment on the surface of the aluminum alloy. The purpose of this paper was to investigate the influence of a fiber laser surface treatment on the structure and properties of the EN AC AlMg5Si2Mn alloy. The goal of this investigation was to increase the hardness and improve tribological properties of the aluminum alloy surface as a result of the conducted laser surface treatment. During laser processing, the top surface of the aluminum alloy was enriched with Cr and Ni particles. The grain size of the applied particles was approximately about 60-130 m. The Cr-Ni powder has been introduced in the molten pool using vacuum feeder at a constant rate of 4.5 g/min. For surface remelting we used square laser beam at a size 3 × 3 mm and with the power of 3.0 kW. The linear laser scan rate of the beam was set at 0.5 m/min. Argon was used to protect the liquid metal alloy during surface treatment. Application of the laser treatment on aluminum alloy has enabled to obtain much harder as well as better wear resistant material compared to the untreated EN AC AlMg5Si2Mn.

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Section: Resultsmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

The structure and mechanical properties of AlMg5Si2Mn alloy after surface alloying by the use of fiber laser

et al. 2018

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“…The laser surface of aluminum alloys with feeding powder is injecting directly into the molten pool was investigated by many authors [1] - [4], [11]. Modification of surface properties of aluminum alloys play an important role in optimizing a material´s performance for a given application.…”

Section: Fig 1 Schematic Of the Lmd Processmentioning

confidence: 99%

Microstructure Study of the Stainless Steel Layer on AlSi Cast Alloy Prepared by Laser Deposition

Michna¹,

Hren²,

Michnová³

et al. 2019

Manufacturing Technology

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The main aim of this study is structural changes on the layer of Al-Si cast alloy by laser austenitic stainless steel 17 246 deposition. In order to remelt the Al-Si alloy surface the laser of 1, 9 kW has been used for facing area, and 1.6 kW for the edge. The linear laser scan rate of the beam was set 450 mm.min-1 for facing area, and for the edge 550 mm.min-1. We observed that the thin surface made of austenitic stainless steel had a lot of splits. The purpose of this study is also to enhance inherent properties of the surface materials to create new product or improve on existing one.

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“…Tests were also conducted to cover the product with corrosion-resistant and harder phases (e.g., Al 2 O 3 ) [23]. The effect of simultaneous melting and feeding of biphasic tungsten carbide WC/W 2 C particles into the molten pool on the structure and mechanical properties of ENAC-AlMg9 aluminium alloy was investigated [24]. For laser alloying, Cu, Mg, and Mn powders added to 98.6% aluminium using a CO 2 laser were also used [25].…”

Section: Introductionmentioning

confidence: 99%

Laser Surface Modification of Aluminium Alloy AlMg9 with B4C Powder

2020

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This paper presents the effects of laser treatment (fiber laser YLS-4000) on the microstructure and selected mechanical properties of the surface layer of AlMg (AlMg9) foundry alloy obtained by alloying with boron carbide (B4C). The correlation between laser alloying process parameters and selected properties of the formed layer was discussed. The studies were supported by microstructural analysis of the remelted zone (RZ), heat affected zone (HAZ), undissolved carbide particles, substrate material, and precipitates formed during rapid solidification. Metallographic investigations of the laser-treated layer were performed using optical microscopy and scanning electron microscopy (SEM). The elemental composition and a detailed analysis of chemical composition in micro-areas were carried out using energy dispersive X-ray spectroscopy (EDS). The remelting thickness, heat-affected zone (HAZ), and amount of base material in surface layers were determined. Microhardness tests were performed on transverse cross-sections of the remelted zone to obtain the hardness profiles in the base material (BM), remelted zone (RZ), and heat affected zone (HAZ). The hardness, roughness, and wear resistance measurements showed that the highest tribological properties of the obtained surface layer were achieved using 0.5 Bar protective gas (Ar) during alloying with B4C powder.

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The Effect of Laser Surface Treatment on Structure and Mechanical Properties Aluminium Alloy ENAC-AlMg9

Cited by 10 publications

References 9 publications

The structure and mechanical properties of AlMg5Si2Mn alloy after surface alloying by the use of fiber laser

The structure and mechanical properties of AlMg5Si2Mn alloy after surface alloying by the use of fiber laser

Microstructure Study of the Stainless Steel Layer on AlSi Cast Alloy Prepared by Laser Deposition

Laser Surface Modification of Aluminium Alloy AlMg9 with B4C Powder

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