Microstructural and Hardness Study of Pulsed Nd:YAG Laser Surface Alloyed Aluminum with Iron

Ansari, Mohammad; Soltani, Reza; Sohi, M. Heydarzadeh; Valefi, Zia

doi:10.1007/s11661-015-3320-7

Cited by 9 publications

(1 citation statement)

References 23 publications

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“…The material to be processed is one of the factors for selection of laser type. Heatsensitive materials and refractory materials are generally processed in pulsed mode [10][11][12][13][14][15]. It is also observed that the solidified structure of developed materials may be different in the case of continuous and pulse laser modes [16].…”

Section: Selection Of Lasermentioning

confidence: 99%

Laser Surface Treatment

Siddiqui¹,

Dubey²

2020

Engineering Steels and High Entropy-Alloys

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Laser surface treatment (LST) utilizes intense thermal energy of laser beam for modification, alloying, and cladding surface of substrate materials. In LST very high cooling rates of 104-106°C/s can be achieved. Such high cooling rate arrests the possibilities of segregation in the case of multicomponent systems. Moreover, very narrow heat-affected zone (HAZ) and easy automation make it suitable for large-scale industrial production. LST depends on many process parameters such as laser power, scan speed, focal length, spot size, substrate temperature, and type of material. Selection of proper range of process parameters for good surface quality is essential. Pores and cracks may arise due to improper selection of parameters. Multilayered, high-entropy, thermal barrier coatings using LST with good bonding with substrates have been developed.

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