Nondestructive characterization of flake graphite cast iron by magnetic adaptive testing

Vértesy, Gábor; Uchimoto, Tetsuya; Takagi, Toshiyuki; Tomáš, I.; Kage, Hidehiko

doi:10.1016/j.ndteint.2015.04.004

Cited by 12 publications

(3 citation statements)

References 18 publications

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“…The second group of MAT descriptors, calculated from the low magnetizing field region, does well at characterizing the modified mechanical hardness due to the heat treatment and the rolling reduction, in contrast to the results of the DC magnetic measurements. The good correlation between the MAT parameters and the hardness was also found in several other materials, such as [ 20 ]. In these cases, the good correlation was also found in the low magnetizing field region of permeability.…”

Section: Discussionmentioning

confidence: 54%

Application of Magnetic Adaptive Testing for Nondestructive Investigation of 2507 Duplex Stainless Steel

Vértesy

Mészarós

Bögre

2023

Sensors

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Duplex stainless steels are two-phase alloys, which contain ferritic and austenitic phases in their microstructure. Their duplex structure provides exceptional resistance to pitting and chloride stress corrosion cracking, and their strength is about twice that of austenitic stainless steels. Due to their good properties, they are widely used in chemical and petrochemical industries as a base material in pressure vessels, pipelines and containers. Duplex stainless steel samples were nondestructively investigated by measuring sets of magnetic minor hysteresis loops using the method called magnetic adaptive testing (MAT). Several series of heat-treated and cold-rolled 2507 duplex stainless steels were measured, and the magnetic parameters were compared with the results of the DC magnetometry of the samples. It was found that the changes in the material properties that were generated by heat treatment and mechanical deformation could easily be followed by magnetic measurements. In contrast to DC magnetic measurements, good correlation was found with the magnetic parameters determined by MAT method and Vickers hardness. Based on our experiments, MAT seems to be a powerful tool for the nondestructive characterization of duplex stainless steels.

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Section: Discussionmentioning

confidence: 54%

Application of Magnetic Adaptive Testing for Nondestructive Investigation of 2507 Duplex Stainless Steel

Vértesy

Mészarós

Bögre

2023

Sensors

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“…The most well-known static indentation hardness test method is the Brinell test [19,20]. In case of the Brinell test, a hardened, polished steel ball is pushed into the surface of the material with a specified load and time.…”

Section: Methodsmentioning

confidence: 99%

Static Hardness Testing of Cement Mortars Containing Different Types of Recycled Construction Waste Powders

Gyurkó

Nemes

2021

Solids

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The present paper deals with the hardness of cement mortars prepared with recycled materials that are potential supplementary cementitious materials (SCM). Two potential SCMs (aerated concrete powder (ACP) and concrete powder) were investigated and compared with a reference (neat cement) sample and a sample containing metakaolin (MK). The long-term performance of the mortars was studied up to the age of one year. Based on the compressive strength tests at different ages, neither concrete powder nor ACP significantly decreases the compressive strength at a 10% substitution ratio. The samples were studied with two types of static hardness tests: the Brinell hardness test and the depth sensing indentation test at two different load levels. The hardness test results indicated that the standard deviation of the results is lower at a higher load level. In the case of metakaolin and concrete powder, the change in the compressive strength was observable in the hardness test results. However, in case of the ACP, the compressive strength decreased, while the hardness increased, which can be traced back to the filler effect of aerated concrete powder. Finally, using the DSI test, the hardness results were analyzed on an energy basis. The analysis highlighted that the change in the hardness is connected to the elastic indentation energy, while it is independent from the dissipated (plastic) indentation energy.

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“…Os ferros fundidos são bastante utilizados na manufatura de peças da indústria automotiva, como na fabricação de virabrequins, bielas, sistema de freios, engrenagens, bloco de motor, bem como na indústria de óleo e gás e em peças de maquinários agrícolas. Apresentam várias vantagens de fundição em relação aos aços, tais como facilidade de produção, baixa temperatura de fusão e excelente fluidez no molde [10], [11].…”

Section: -Ferros Fundidosunclassified

Produção e caracterização de ferros fundidos nodulares ligados com nióbio submetidos a tratamentos termoquímicos de boretação e termorreativos

Junior¹,

Tadeu²

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Nondestructive characterization of flake graphite cast iron by magnetic adaptive testing

Cited by 12 publications

References 18 publications

Application of Magnetic Adaptive Testing for Nondestructive Investigation of 2507 Duplex Stainless Steel

Application of Magnetic Adaptive Testing for Nondestructive Investigation of 2507 Duplex Stainless Steel

Static Hardness Testing of Cement Mortars Containing Different Types of Recycled Construction Waste Powders

Produção e caracterização de ferros fundidos nodulares ligados com nióbio submetidos a tratamentos termoquímicos de boretação e termorreativos

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