Laser Surface Modification of Aluminium Alloy AlMg9 with B4C Powder

Sroka, M.; Jonda, E.; Pakieła, Wojciech

doi:10.3390/ma13020402

Cited by 10 publications

(10 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The suppression of the martensitic transformation under non-equilibrium cooling conditions has been reported in several works on the casting and surface treatment of different cast iron grades [ 25 , 26 ]. It indicates that, from the point of view of the maximum surface hardness, the lower traverse speeds, ensuring lower values of the cooling rate, are beneficial in producing more wear-resistant layers [ 27 , 28 ]. On the other hand, to avoid surface melting with increasing power density, the elevation of traverse speed is required.…”

Section: Discussionmentioning

confidence: 99%

High-Power Diode Laser Surface Transformation Hardening of Ferrous Alloys

et al. 2022

View full text Add to dashboard Cite

A high-power direct diode laser (HPDDL) having a rectangular beam with a top-hat intensity distribution was used to produce surface-hardened layers on a ferrous alloy. The thermal conditions in the hardened zone were estimated by using numerical simulations and infrared (IR) thermography and then referred to the thickness and microstructure of the hardened layers. The microstructural characteristics of the hardened layers were investigated using optical, scanning electron and transmission electron microscopy together with X-ray diffraction. It was found that the major factor that controls the thickness of the hardened layer is laser power density, which determines the optimal range of the traverse speed, and in consequence the temperature distribution in the hardened zone. The increase in the cooling rate led to the suppression of the martensitic transformation and a decrease in the hardened layer hardness. The precipitation of the nanometric plate-like and spherical cementite was observed throughout the hardened layer.

show abstract

Section: Discussionmentioning

confidence: 99%

High-Power Diode Laser Surface Transformation Hardening of Ferrous Alloys

et al. 2022

View full text Add to dashboard Cite

show abstract

“…This Special Issue, entitled “Development of Laser Welding and Surface Treatment of Metals”, is a complementary and valuable resource of knowledge in the following fields: Study of technological conditions of laser welding, investigation of test joints properties [ 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ]; Analytical and numerical models of heat sources of laser beam and arc welding processes [ 19 , 20 , 22 , 23 ]; Study of laser cladding and investigations of the coating’s properties and tribological characteristics [ 27 , 28 , 29 , 30 , 31 , 32 , 33 ]; Study and development of fusion welding processes, investigation of properties of the deposit produced under forced cooling or underwater conditions [ 34 , 35 , 36 ]; Study of cladding, surfacing, and thermal spraying processes of wear-resistant coatings, characterization of the coatings [ 37 , 38 , 39 ]; Study of application of local strengthening of the thin-walled structure by laser treatment [ 40 ]. …”

Section: Short Characterization Of the Special Issuementioning

confidence: 99%

Development of Laser Welding and Surface Treatment of Metals

Lisiecki

2022

Materials

View full text Add to dashboard Cite

This Special Issue on Development of Laser Welding and Surface Treatment of Metals contains as many as twenty-two research articles mainly related to the application of lasers, but also on other welding processes that may be competitive to laser technologies under specific conditions. Despite the introduction of lasers for material processing in the 1960s, the continuous development of laser devices also leads to the development and expansion of laser technology applications. This Special Issue is a compendium of knowledge in the field of fusion welding, the manufacturing of surface layers and coatings with increased wear resistance and tribological characteristics, as well as corrosion resistance and the characterization of coatings and surface layers. The topics of the presented research articles include aspects related to laser welding (eight articles), especially technological conditions, the properties of different types of joints, and analytical and numerical aspects of modelling the laser heat sources. The second dominant issue concerns laser cladding and laser surface treatment of different ferrous and nonferrous metallic and composite materials (six articles). In addition, there are interesting results of the study of fusion welding under forced cooling of the deposit or underwater conditions (four articles), results on the characterization of wear resistance coating produced by different technologies that can be competitive for laser cladding (three articles), and an original study on local strengthening of the thin-walled structure by laser treatment (one article). This Special Issue provides very wide and valuable knowledge based on theoretical and empirical study in the field of laser and fusion welding, laser and related coating technologies, characterization of coatings, and wear phenomena.

show abstract

“…One of the primary methods for obtaining materials with better mechanical properties is surface treatment technology. Among these processes is laser surface alloying, which can lead to obtaining good wear resistance on aluminum substrate [8][9][10]. Laser surface alloying by adding an external material is one of the effective methods among the three surface modification techniques, i.e., laser dispersing, laser cladding, and laser surface alloying.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Al-CuMgMn Alloy Developed by Laser Beam Surface Modification for Wear Resistance

Tolcha

Jiru

Lemu

2021

Metals

View full text Add to dashboard Cite

Laser surface alloying is one of the recent technologies used in the manufacturing sector for improving the surface properties of metals. Aluminum alloys are key materials in the manufacturing sector. This favors their high demand in many industries. In this study investigation, the surface alloying of pure aluminum was conducted using a CO2 laser. Four types of alloying powders were used with a 2:1:1 combination of copper, magnesium, and manganese. The hardness of the alloyed zones of Al-CuMgMn increased by 2 to 7 times at a 1.7 kW processing laser power. To assess the rate of wear for the alloyed samples, a modified Lancaster wear coefficient was considered. When the pin-on-disc wear test at 10 N and 20 N loads was analyzed with different sliding speeds, a reduction in wear by 30–50% appeared due to surface alloying. The result shows good insight into the wear behavior. In the same way, microstructure and surface morphology studies displayed a good metallurgical bonding without defects. In a statistical sense, the friction and wear behavior matched with an asperity-based model. The experimental results revealed that laser surface alloy has more wear resistance.

show abstract

Laser Surface Modification of Aluminium Alloy AlMg9 with B4C Powder

Cited by 10 publications

References 28 publications

High-Power Diode Laser Surface Transformation Hardening of Ferrous Alloys

High-Power Diode Laser Surface Transformation Hardening of Ferrous Alloys

Development of Laser Welding and Surface Treatment of Metals

Experimental Investigation of Al-CuMgMn Alloy Developed by Laser Beam Surface Modification for Wear Resistance

Contact Info

Product

Resources

About