On the influence of laser cladding parameters and number of deposited layers on as-built and machined AISI H13 tool steel multilayered claddings

Lizzul, Lucia; Sorgato, Marco; Bertolini, Rachele; Ghiotti, Andrea; Ranieri, Maria; Rech, Silvano

doi:10.1016/j.cirpj.2021.07.003

Cited by 18 publications

(6 citation statements)

References 30 publications

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“…In [15] a SLM and heat-treated maraging steel was milled showing that both an increased surface integrity and reduced tool wear could be obtained if the process chain parameters were properly chosen, in particular the typology of the post-AM heat treatment. In [16] layers of AISI H13 tool steel were laser cladded on a C45 substrate and their machinability during milling evaluated. Even if a reduced number of layers was shown to lead to a better quality of the claddings, their machinability was negatively affected since the higher the number of the layers the higher the cutting forces and the worse the surface integrity (see Figure 2).…”

Section: Machinabilitymentioning

confidence: 99%

“…Even if a reduced number of layers was shown to lead to a better quality of the claddings, their machinability was negatively affected since the higher the number of the layers the higher the cutting forces and the worse the surface integrity (see Figure 2). (adapted from [16]).…”

Section: Machinabilitymentioning

confidence: 99%

“…2. Cutting force (left), and microhardness (right) when milling laser-cladded H13 layers on a C45 substrate(adapted from[16]).…”

mentioning

confidence: 99%

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Machining of Additive Manufactured Metal Alloys

Bruschi

Bertolini

Ghiotti

2022

KEM

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Additive Manufacturing of metal alloys offers unique advantages for producing net-shape components of complex geometries with very little waste of material. Nevertheless, machining operations may be needed on functional surfaces to get the required surface finish and geometrical tolerances. This poses challenging issues since the microstructural features characterizing the AM alloys are drastically different from those of the wrought alloys of the same chemical composition, which, in turn, may affect the mechanical and machining response to a great extent. This paper shows that both the machined surface integrity and tool wear are greatly affected by the microstructural features induced by the previous AM process as well as by the build-up orientation.

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Section: Machinabilitymentioning

confidence: 99%

Section: Machinabilitymentioning

confidence: 99%

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Machining of Additive Manufactured Metal Alloys

Bruschi

Bertolini

Ghiotti

2022

KEM

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“…The in situ synthesis is a method that improves the performance of cladding layers by adding elements to react in the molten pool to generate target reinforcements. The in situ synthesized reinforcements have received extensive attention recently [ 1 , 2 , 6 ], as they significantly improve the hardness, wear resistance, and corrosion resistance of the substrate [ 7 , 8 ]. However, defects such as pores and cracks are easily formed in coatings due to the rapid cooling and heating of laser cladding [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Microstructures and Properties of NbC-Reinforced Ni-Based Coatings Synthesized In Situ by Ultrasonic Vibration-Assisted Laser Cladding

et al. 2023

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This paper aims to explore the mechanism of an ultrasonic applied field on the microstructures and properties of coatings, and clarify the evolution of the molten pool under different ultrasonic frequencies. The Taguchi experimental design method was adopted in this paper. NbC-reinforced Ni-based coatings were in situ synthesized by laser cladding to investigate the effects of ultrasonic vibration process parameters on the microstructure, pore area, microhardness, and wear resistance of the cladding layer. The results show that the pore area decreases first and then increases as ultrasonic power increases from 600 to 900 W and ultrasonic frequency from 23 to 40 kHz. On the contrary, the hardness and wear resistance increase at first and then decrease. The pore area is minimized at 800 W ultrasonic power and 32 kHz ultrasonic frequency, and the hardness is maximized at 600 W ultrasonic power and 40 kHz ultrasonic frequency. Meanwhile, the highest wear resistance can be obtained when ultrasonic power is 700 W and ultrasonic frequency is 32 kHz. Based on the phase structure analysis, the cladding layer mainly consists of FeNi3, NbC, B4C, and CrB2. Ultrasonic vibration will not change the phase composition of the layer. Combined with the varying G/R value and cooling rate, the reasons for the change in grain morphology in different areas were analyzed to reveal the evolution mechanism of the molten pool under the influence of ultrasound.

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“…Various surface modification processes are used, depending on the specific end application. These processes may include welding arc technologies such as gas metal arc welding (GMAW) [19], gas tungsten arc welding (GTAW) [20], cold metal transfer (CMT) [21,22], plasma transferred arc (PTA) [22,23], and high-energy processes such as laser technologies [24][25][26] or additive manufacturing (AM) [27,28].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Austenitic Stainless Steel ER308 Coating on H13 Tool Steel by Robotic GMAW Process

Hernandez-Flores,

Rodriguez-Vargas,

Stornelli

et al. 2023

Metals

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Within the drilling, petrochemical, construction, and related industries, coatings are used to recover components that failed during service or to prevent potential failures. Due to high stresses, such as wear and corrosion, which the materials are subjected to, industries require the application of coating between dissimilar materials, such as carbon steels and stainless steels, through arc welding processes. In this work, an austenitic stainless steel (ER308) coating was applied to an H13 tool steel substrate using the gas metal arc welding (GMAW) robotic process. The heat input during the process was calculated to establish a relationship between the geometry obtained in the coating and its dilution percentage. Furthermore, the evolution of the microstructure of the coating, interface, and substrate was evaluated using XRD and SEM techniques. Notably, the presence of martensite at the interface was observed. The mechanical behavior of the welded assembly was analyzed through Vickers microhardness, and a pin-on-disk wear test was employed to assess its wear resistance. It was found that the dilution percentage is around 18% at high heat input (0.813 kJ/mm) but decreases to about 14% with reduced heat input. Microhardness tests revealed that at the interface, the maximum value is reached at about 625 HV due to the presence of quenched martensite. Moreover, increasing the heat input favors wear resistance.

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On the influence of laser cladding parameters and number of deposited layers on as-built and machined AISI H13 tool steel multilayered claddings

Cited by 18 publications

References 30 publications

Machining of Additive Manufactured Metal Alloys

Machining of Additive Manufactured Metal Alloys

Microstructures and Properties of NbC-Reinforced Ni-Based Coatings Synthesized In Situ by Ultrasonic Vibration-Assisted Laser Cladding

Evaluation of Austenitic Stainless Steel ER308 Coating on H13 Tool Steel by Robotic GMAW Process

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