A Study on Modification of Micro-Alloy Steel Surfaces with Different Hard Materials Via Electro-Spark Deposition Method

Çakır, Ali; Yılmaz, Mustafa Safa; Ribalko, Alexander V.; Korkmaz, Kemal

doi:10.12693/aphyspola.127.1410

Cited by 2 publications

(1 citation statement)

References 9 publications

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“…Traditional repair method such as laser cladding usually requires expensive equipment/specific studio and is often difficult to process those camber or complex-shaped components with small dimension [8]. On the contrary, electro-spark deposition (ESD) is a kind of practical and economical repair technology [9,10]. In deposition, the repair material is used as the electrode (anode) and the worn component is usually used as the substrate (cathode).…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Wear Resistance of Ti6Al4V Coating Fabricated by Electro-Spark Deposition

Wang

Han

2018

Metals

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In this study, a Ti6Al4V coating with a large thickness of more than 550 µm was successfully deposited onto the surface of Ti6Al4V substrate by electro-spark deposition. The microstructure, phase composition, microhardness and wear resistance of the deposited coating were investigated by scanning electron microscope (SEM), X-ray diffraction (XRD), Vickers hardness and wear tester, respectively. The results show that the deposited coating is mainly composed of α’ martensite. The interface between the deposited coating and the underlying substrate is even and consecutive, which implies that a good metallurgical bond was obtained. The average hardness of the deposited coating is ~540 HV, which is about 1.6 times that of the substrate. The wear resistance of deposited coatings is obviously superior to the substrate. Under same conditions, the friction coefficient of the deposited coating decreases by about 0.19. The cumulative mass loss of the coating specimens is only about 1.58 mg in 20 min tests, while the mass loss of the substrate is ~3.6 mg. The analysis indicates that the improvement on wear resistance can be mainly attributed to the high hardness of the deposited coating, i.e., the hardened coating relieves the micro-cutting and adhesive wear in wear processes.

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Section: Introductionmentioning

confidence: 99%

Microstructure and Wear Resistance of Ti6Al4V Coating Fabricated by Electro-Spark Deposition

Wang

Han

2018

Metals

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Structural Modifications of Superficial Layer of C45 Steel Samples Through WT20 and WZr8 Depositions

Achiţei

Sandu

Tugui

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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The effect of the material surface oxidation on laser light absorption M Hruška, J Tesa, M Vosták et al. Abstract: The paper presents technological aspects regarding the modification of mechanical chracteristics in the superficial layer of C45 steel samples, through thin layers deposition using WT20 and WZr8 electrodes. Deposition of thin layers was made through electrical discharge method in impulse. The obtained samples were microstructural analyzed, at various magnitudes, on an VegaTescan electronic microscope. Also, measurements of mechanical chracteristics were made through indentation, highlighting the improved values after layers deposition with the 2 electrods. IntroductionThe steel presents the posibility of allloying with the most various chemical elements, resulting highly improved properties [1,2].The carbon steels contain beside iron and carbon, other alloying elements. Other chemical elements are considered impurities. The exception from this rule are some elements, which are imposed by the technological process of elaboration and casting (manganese, silicon, aluminium).The regular steel carbon is manufactured curently and used without heat treatments at civil constructions, metallic constructions and machines facturing.The quality carbon steel is used in machine manufacturing, usually heat treated and has guaranteed chemical composition and mechanical characteristics.The superior carbon steel is a quality steel in which the content of sulfur and phosphorus is limited at below 0.035% each and conditions are imposed regarding the structure (size of austenitic grain, depth of hardening) and the maximum content in non-metallic inclusions.Low alloyed steels are steels which contain alloying elements willingly introduced in mininum quantities which influence the physical-chemical properties and mechanical characteristics.The alloyed steels are the medium and high alloyed and are used only heat treated. The alloyed steels have the sum of alloying elements concentrations higher than 10% or one of this concentration higher than the following limits: Si 6%; Mn 6%; Cr 6%; Ni 4.5%; Mo 1%; W 4%; Co 1%; V 1%.The steels are delivered to the beneficiaries in the form of cast parts or laminated:

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A Study on Modification of Micro-Alloy Steel Surfaces with Different Hard Materials Via Electro-Spark Deposition Method

Cited by 2 publications

References 9 publications

Microstructure and Wear Resistance of Ti6Al4V Coating Fabricated by Electro-Spark Deposition

Microstructure and Wear Resistance of Ti6Al4V Coating Fabricated by Electro-Spark Deposition

Structural Modifications of Superficial Layer of C45 Steel Samples Through WT20 and WZr8 Depositions

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