Influence of heat treatment on microstructures and mechanical properties of K447A cladding layers obtained by laser solid forming

Zhang, Zhenlin; Zhao, Yue; Jing, Shan; Wu, Aiping; Gu, Hui; Tang, Xiaohong

doi:10.1016/j.jallcom.2019.03.136

Cited by 28 publications

(4 citation statements)

References 23 publications

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“…When a mold is damaged, it is generally repaired by means of welding. This is because welding can repair the surface or damaged part of the mold, and it is more cost-effective than replacing the damaged mold [1][2][3][4]. however, in the welding procedure, pre-heat treatment and post-heat treatment of the mold are required.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Output Conditions on Microstructure and Properties of SKD61 Laser Cladding

Kim,

Yoo,

Hong

2024

Archives of Metallurgy and Materials

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This study investigated the effect of cladding on tool steel (SKD61) by using 5%Cr-1.5%Mo-Fe powder (SKD61), which is expected to be economically effective when used to manufacture and mend die-casting parts. The cladding conditions were as follows: the distance between the coaxial powder supply head and the substrate surface was 20 mm, and Ar was used as the supply gas. The laser outputs applied in the cladding procedure were 3, 4, and 5 kW. The microstructure of the heat-affected zone in the processed specimens was analyzed, and the macrostructure and morphology of the substrate material were studied. Specimen hardness measurements were performed at intervals of 0.1 mm from the substrate surface to the core. As the laser output increased from 3 to 4 and 5 kW, the dilution rate increased from 10.6% to 11.8 and 13.2%. It was confirmed that the fraction of carbides increased as the laser output increased from 3 kW to 5 kW.

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Section: Introductionmentioning

confidence: 99%

“…Recently, several studies have been conducted to compensate for these shortcomings, and in these studies, laser cladding technology has been applied to restore damaged molds or mold surfaces. in particular, laser cladding technology can be applied in remanufacturing processes and to repair mold and die surfaces [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Effect of Output Conditions on Microstructure and Properties of SKD61 Laser Cladding

Kim,

Yoo,

Hong

2024

Archives of Metallurgy and Materials

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“…This laser cladding method has been utilized as a method to improve the quality and prolong the life time of mold in the mold industry, which is essential to the basic industries. it is applied to repair the damaged part or surface of the mold, and it can be cost-effective than the total replacement cost of the damaged mold [1][2][3][4]. Recently, research is being conducted to minimize repair costs by forming an alloy layer on the surface of a specific part of the mold to improve the performance, and by reprocessing the alloy layer after using the mold for a certain period of time [5].…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

2022

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Study on Improvement of Surface propertIeS of SKd61 powder on S45c uSIng LaSer cLaddIng in this study, we investigated the effect of cladding on structural carbon steel (S45C) using 5%Cr-1.5%mo-Fe powder (SKD61), which is expected to show economically efficient production of die-casting parts. The process conditions were performed under argon atmosphere using a diode laser source with specialized wavelength of 900-1070 nm, and the output conditions were 3, 4, and 5 kW, respectively. after the cladding was completed, the surface coating layer's shape and the microstructure were analyzed. The hardness test was carried out with micro Vickers hardness tester under 500 gram-force along the normal line at the interval of 0.2 mm from the surface to core direction on the cross-sectional area. in addition, polarization curve test of the surface coating layer was performed to investigate the corrosion resistance characteristics.

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“…Precise repair of damaged areas or surfaces is much more cost-effective than a full replacement. Laser cladding can be applied to a remanufacturing process, especially for repairing cracks in the mold and dies surface [5][6][7]. it increases the mold's life by creating new properties on the substrate surface to improve toughness and hardness.…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Kim,

Yoo,

Jeon

et al. 2021

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Study on Improvement of Surface propertIeS of Low carbon SteeL uSIng LaSer cLaddIngLaser cladding is a method that can be applied to repair the crack and break on the mold and die surfaces, as well as generate new attributes on the surface to improve toughness, hardness, and corrosion resistance. it is used to extend the life of the mold. it also has the advantages of superior bonding strength and precision coating on a local area compared with the conventional thermal spraying technology. in this study, we investigated the effect of cladding on low carbon alloy steel using 18%Cr-2.5%Ni-Fe powder (Rockit404), which showed high hardness on the die surface. The process conditions were performed in an argon atmosphere using a diode laser source specialized for 900-1070 nm, and the output conditions were 5, 6, and 10 kW, respectively. After the cladding was completed, the surface coating layer's shape, the hardness according to the cross-section's thickness, and the microstructure were analyzed.

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Influence of heat treatment on microstructures and mechanical properties of K447A cladding layers obtained by laser solid forming

Cited by 28 publications

References 23 publications

Effect of Output Conditions on Microstructure and Properties of SKD61 Laser Cladding

Effect of Output Conditions on Microstructure and Properties of SKD61 Laser Cladding

Archives of Metallurgy and Materials

Archives of Metallurgy and Materials

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