Laser-based Surface Modifications of Aluminum and its Alloys

Quazi, M. M.; Fazal, M. A.; Haseeb, A.S.M.A.; Yusof, Farazila; Masjuki, H.H.; Ahmed, Arslan

doi:10.1080/10408436.2015.1076716

Cited by 103 publications

(38 citation statements)

References 136 publications

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“…18 This friction, in turn, affects engine durability as well as fuel consumption. Therefore, various methods are used to improve the performance of automotive engines such as coatings, 19 laser texturing, [20][21][22][23] reducing the weight of components and modifying the composition of automotive lubricants. 24 Thus engine oil having high lubricity is needed to reduce friction and wear in order to extend engine life.…”

Section: Introductionmentioning

confidence: 99%

Effect of gasoline–bioethanol blends on the properties and lubrication characteristics of commercial engine oil

et al. 2017

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Section: Introductionmentioning

confidence: 99%

Effect of gasoline–bioethanol blends on the properties and lubrication characteristics of commercial engine oil

et al. 2017

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“…Laser surface alloying of martensitic stainless steel for properties improvement by using the CO2 laser and it has the significant progress in improving the properties of martensitic stainless steel has been reported [20,21]. The hardness of material such as various stainless steels had been improved through laser alloying by incorporating carbide and borides [22][23][24][25]. Existing studies have focused on predicting the LSP introduced residual stress [26][27][28][29], but very limited work has given attention to further heat effect zone under laser processing.…”

Section: Introductionmentioning

confidence: 99%

Thermal Effect Analysis of Laser Processing Cemented Carbide Micro-texture

Wan¹,

Zheng²

2019

IJHT

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Laser surface microtexturing techniques can improve the friction properties of materials by reducing the contact area and form heat affected zones (HAZ) by energy conduction in laser processing. HAZ has a significant effect on the surface friction properties in the friction zone. This paper focuses on the formation of HAZ on the surface of cemented carbide during laser processing micro-texture. Firstly, the principle of energy absorption, conversion and conduction in laser processing is analyzed. Then the finite element method is used to study the distribution of temperature field and its change with time. Then the laser processing of microtexture of cemented carbide is carried out by laser marking machine. In the experiment, the characteristics of HAZ on the surface of cemented carbide after laser processing were studied by ultra-depth microscope, EDS and SEM. The effects of different laser processing parameters on the size of HAZ were studied, and the changes of element content after laser processing were studied. At the same time, the morphology of HAZ microcracks was observed and the reasons for its formation were analyzed. The results show that the laser power is the main factor affecting the HAZ size, followed by the laser scanning speed and the number of scans. The content of Co after laser processing is highest near the center of the micro-texture, and decreases from the center to the edge. The thermal stress and stress concentration caused by the temperature gradient cause microcracks to form around and inside the microtexture. By selecting reasonable laser parameters, it has an important influence on the size, element content and microcrack formation of HAZ, and it is of great significance to improve the micro-texture properties of the processed cemented carbide.

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“…Laser-melted surface layers produce a fine microstructure that reduced the size of particles of galvanic couples and sites in place of pits nucleation [7]. Laser surface treatment of aluminium alloys has been widely investigated since last decade [8,9]. LSM was applied to aluminium composites also but the available literature is sparse.…”

Section: Introductionmentioning

confidence: 99%

Strengthening of the Surface Properties of Al-4.5%Cu/BLA Composites by Laser Applications

Rao*¹,

Balasubramanian²,

Sahu³

et al. 2019

IJITEE

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Aluminium composites were used widely due to merits like high strength to weight ratio, electrical and thermal conductivity. In this paper, the influence of the Laser Surface Melting on exterior surface of Al-4.5% Cu alloy metal matrix composite reinforced with 2 and 4 wt.% of Bamboo Leaf Ash particles produced by stir casting. The composite’s surface was melted using a laser machine. The microstructure and the hardness of as-cast and laser melted surface of composites were studied. The results of the composites have been compared before and after laser treatment. The grain size on surface of composites was reduced after laser treatment and also observed that porosity was minimized. The hardness of surface composites was enhanced desirably after laser treatment. Thus, re-melting the surface by laser can be suitably useful to strengthen the surface properties of the Aluminium composites.

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Laser-based Surface Modifications of Aluminum and its Alloys

Cited by 103 publications

References 136 publications

Effect of gasoline–bioethanol blends on the properties and lubrication characteristics of commercial engine oil

Effect of gasoline–bioethanol blends on the properties and lubrication characteristics of commercial engine oil

Thermal Effect Analysis of Laser Processing Cemented Carbide Micro-texture

Strengthening of the Surface Properties of Al-4.5%Cu/BLA Composites by Laser Applications

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