Electro-spark deposition of Fe-based amorphous alloy coatings

Chen, Lingxin; Gao, Wei; Li, Zhengwei; Zhang, Haifeng; Hu, Zhuangqi

doi:10.1016/j.matlet.2006.04.042

Cited by 63 publications

(29 citation statements)

References 22 publications

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“…Among them, there are Fe-based alloys [21], superalloys [22][23][24], and magnesium alloys [25]. Heard and Brochu [26] determined that ESD is a feasible method of producing an aluminum-nickel deposit, consisting of a nano-structured Al3Ni phase.…”

Section: Introductionmentioning

confidence: 99%

Study of the Direct Metal Deposition of AA2024 by ElectroSpark for Coating and Reparation Scopes

2017

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ElectroSpark Deposition (ESD) is a pulsed micro-welding process that is capable of depositing wear and corrosion resistance deposit to repair, improve, and to extend the service life of the components and tools. Major new applications have taken place in gas turbine blades and steam turbine blade protection and repair, and in military, medical, metal-working, and recreational equipment applications. In this study, the ESD technique was exploited to fabricate 2024 aluminum alloy deposit on a similar substrate. The deposits were deposited using different process parameters. Heat input was varied on three levels. The outcoming microstructure was analyzed by optical and scanning electron microscopies. The deposit was characterized by the overlapping of layers with a mixed microstructure. The average hardness was independent from the process parameters. Both porosity inside the deposits and cracks at the deposit/substrate interface were detected. The porosity lowered with the heat input and increased the average length of cracks.

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Section: Introductionmentioning

confidence: 99%

Study of the Direct Metal Deposition of AA2024 by ElectroSpark for Coating and Reparation Scopes

2017

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“…Many works have studied the mass transfer that occurs during the ESD process [25][26][27], which is paramount to produce a high wear-resistant coating [28][29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Repairing 2024 Aluminum Alloy via Electrospark Deposition Process: A Feasibility Study

Renna

Leo

Casalino

et al. 2018

Advances in Materials Science and Engineering

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e electrospark deposition (ESD) technique has been studied as a potential method to repair locally damaged 2024 rolled sheets supplied in natural-aged (T4) and artificial-aged (T6) conditions. e 2024-T4 and 2024-T6 tensile samples were first notched, and then the notches were filled (repaired) by ESD with the same aluminum alloy. e effect of process parameters on the microstructure of the filling material and the substrate properties was studied by optical and scanning electron microscopy. Tensile and hardness tests were performed. e tensile test showed that T4 and T6 as-repaired specimens had low tensile properties, which was due to defectiveness and residual stress caused by high cooling rate during reparation. However, the asrepaired specimens were heat-treated at either 135°C or 190°C to improve the mechanical properties. A better yield strength was observed for the T4 heat-treated alloy. e ductility and ultimate tensile strength did not change, being mainly affected by voids and microcracks.

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“…Literature search showed that in a number of works [3][4][5][6], authors used chromium carbides, titanium nitride, amorphous materials to increase the wear resistance of stainless steels, but the maximum coating thickness barely reached 30 μm, which did not provide sufficient service life of parts hardened in this way.…”

Section: Introductionmentioning

confidence: 99%

INCREASE OF WEAR RESISTANCE OF Сr18Ni10Ti STAINLESS STEEL BY METHOD OF ELECTRIC-SPARK ALLOYING WITH ELECTRODES OF REFRACTORY METALS AND GRAPHITE

Agafii

Mihailov

Kazak

et al. 2017

Proccedings of International Scientific Conference "BALTTRIB 2017"

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Abstract. The article presents the results of wear testing of stainless steel Cr18Ni10Тi treated with electrodes made of refractory metals and graphite by the method of electric-spark alloying. It was established that all electrospark coatings had a higher wear resistance than the Cr18Ni10Ti uncoated steel. Wear resistance of coatings was increased in the direction Mo + GraphiteTi + Ni W + Graphite Ti + Al + Graphite. X-ray diffraction analysis showed that molybdenum, tungsten, titanium carbides and other solid materials such as titanium nitride and nickel-titanium intermetallide are formed on the doped steel surfaces, which increased microhardness from 4.9 to 8 times and wear resistance from 1.63 to 29 times.

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Electro-spark deposition of Fe-based amorphous alloy coatings

Cited by 63 publications

References 22 publications

Study of the Direct Metal Deposition of AA2024 by ElectroSpark for Coating and Reparation Scopes

Study of the Direct Metal Deposition of AA2024 by ElectroSpark for Coating and Reparation Scopes

Repairing 2024 Aluminum Alloy via Electrospark Deposition Process: A Feasibility Study

INCREASE OF WEAR RESISTANCE OF Сr18Ni10Ti STAINLESS STEEL BY METHOD OF ELECTRIC-SPARK ALLOYING WITH ELECTRODES OF REFRACTORY METALS AND GRAPHITE

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