Laser cladding of a featureless iron-based alloy

Aghasibeig, Maniya; Fredriksson, Hasse

doi:10.1016/j.surfcoat.2012.08.013

Cited by 30 publications

(21 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…M. Aghasibeig applied Fe-Cr-Mn-Si-Mo-C amorphous composite coatings on AISI 1018 steel substrates using a diode laser. 9 Currently, the fabrication of amorphous coatings with laser processing methods is still attracting considerable attention. 10,11 An amorphous coating often exhibits a high microhardness, excellent corrosion resistance and wear resistance, and also allows extensive potential industrial applications in nuclear energy, thermal-power and chemical plants, shipping and sewagedisposal systems, etc.…”

Section: Introductionmentioning

confidence: 99%

Effects of heat inputs on the structure of Ni-based amorphous composite coatings applied with laser cladding

Li¹,

Chen²,

Gu³

et al. 2019

Mater. Tehnol.

View full text Add to dashboard Cite

In this paper, Ni-based amorphous composite coatings were fabricated under different heat inputs on a mild-steel substrate using laser cladding with coaxial powder feeding. The microstructure of the coating was studied using a scanning electron microscope (SEM), X-ray diffraction (XRD) and transmission electron microscope (TEM). The effects of the heat inputs on the amorphous-phase forming ability of the Ni-based alloy was investigated systematically with experimental and numerical simulation methods. The results show that there was no amorphous phase in the coating when the heat input was 131.3 J/mm. The amorphous-phase fraction increased with a decrease in the laser-cladding heat inputs from 81.3 J/mm to 50.0 J/mm. Then a 3D thermal finite-element (FE) model was built to simulate the temperature field of coaxial laser cladding at different heat inputs using the element birth and death technique. Detailed 3D transient thermal analyses were performed on temperature-dependent material properties. The proposed model was validated with the experimental results. It was found that a decrease in the heat input leads to a lower high-temperature residence time and a higher cooling rate of the melted pool. Consequently, a low heat input can be considered as a necessary condition for the formation of the amorphous phase during the laser-cladding process.

show abstract

Section: Introductionmentioning

confidence: 99%

Effects of heat inputs on the structure of Ni-based amorphous composite coatings applied with laser cladding

Li¹,

Chen²,

Gu³

et al. 2019

Mater. Tehnol.

View full text Add to dashboard Cite

show abstract

“…LASER surface treatment consists of an advanced surface modification technique, in a controlled manner [1][2][3][4] and envolving high cooling rates of about 10 4 K/s 5 , for production of metallurgically well-bonded coatings. Surface treatments through LASER can enhance wear and corrosion resistance of materials 6 , being used in steels, reducing the progress of wear and extending tool life.…”

Section: Introductionmentioning

confidence: 99%

“…The Fe 60 Cr 8 Nb 8 B 24 (at%) bulk metallic glass (BMG) alloy presents good glass forming ability (GFA) 8,9 leading to a formation of an amorphous or nanocrystalline structure with lower critical cooling rates of the order of 10 4 K/s 5 . Due to an excellent combination of properties and low costs, Fe-based metallic glasses have been widely studied for industrial applications.…”

Section: Introductionmentioning

confidence: 99%

Metallic Glass Formation Upon Rapid Solidification of Fe60Cr8Nb8B24 (at%) Alloy through LASER Cladding and Remelting

et al. 2017

View full text Add to dashboard Cite

Fe 60 Cr 8 Nb 8 B 24 (at%) amorphous powder and ingot were submitted to LASER cladding and remelting process, respectively. Fe-based coatings were produced using different LASER processing parameters and characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and Vickers microhardness. All coatings obtained by LASER cladding (LC) and layers obtained by LASER surface remelting (LSR) with shorter and median interaction times (scanning speeds of 16.7 and 66.7mm/s), irrespective of overlap value, presented peaks of the crystalline phases α-Fe, Fe 2 B and the FeNbB intermetallic. In addition, layers obtained by LSR with shorter interaction time (150mm/s), in general, presented only peaks of the α-Fe and Fe 2 B phases, except that produced with overlap value of 20%, more amorphous. SEM results showed that, regardless of LASER process, the coatings presented cracks, some pores and FeNbB intermetallic phase. All coatings obtained by LC and that obtained with shorter interaction time, by LSR, showed a Vickers microhardness, 1086 to 1329HV and 2161 to 2294HV, respectively, significantly higher than the substrates, AISI steel: 170HV and Fe-Cr-Nb-B: 1921HV.

show abstract

“…Numerical modeling offers a cost-efficient way for understanding the related complex physics in a laser cladding process. An accurate model can be used in process prediction and system control [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Numerical study on the effect of pressure and nozzle dimension on particle distribution and velocity in laser cladding under vacuum base on CFD

Zhang

Coddet

2016

Journal of Manufacturing Processes

View full text Add to dashboard Cite

Laser cladding of a featureless iron-based alloy

Cited by 30 publications

References 24 publications

Effects of heat inputs on the structure of Ni-based amorphous composite coatings applied with laser cladding

Effects of heat inputs on the structure of Ni-based amorphous composite coatings applied with laser cladding

Metallic Glass Formation Upon Rapid Solidification of Fe60Cr8Nb8B24 (at%) Alloy through LASER Cladding and Remelting

Numerical study on the effect of pressure and nozzle dimension on particle distribution and velocity in laser cladding under vacuum base on CFD

Contact Info

Product

Resources

About