Analysis of the influence of surface condition on the corrosion behavior of alloy 2024

Hren, Iryna; Kuśmierczak, Sylvia; Kurajdová, Katarína; Luňák, Milan

doi:10.21062/mft.2020.106

Cited by 2 publications

(1 citation statement)

References 16 publications

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“…Construction materials used in industry must meet high requirements. The reason for the high requirements is the need to ensure the safety of people and structures during the operation of technical structures [1][2][3][4][5][6][7][8][9]. In recent years, when structures are operated in an aggressive environment, corrosion-resistant steels are usually used [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Effect of 80% water solution of animal slurry on carbon structural S235JRC steel at room temperature

Lipiński

Karpisz

2021

20th International Scientific Conference Engineering for Rural Development Proceedings

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Steel in S235JRC grade is a popular unalloyed steel readily used for various structures, including those working in contact with aggressive media. The corrosion of these steels is easy to control. It is usually superficial. One of the more complex corrosive environments is animal slurry. As a result, the corrosive effects of animal slurry are complex and time varying. Slurry is a mixture of dung and urine. The aggressive corrosive constituents in slurry are urea, uric acid, naturally excreted chloride, as well as ammonia or ammonium salts. The purpose of this article is to investigate corrosion resistance in different time (48, 96, 144, 192, 240, 288, 336, 384-and 432 hours), using weight loss and profile roughness parameters of structural steel in grade S235JRC in natural 80% water solution of animal slurry at room temperature (298 K). Today, corrosion-resistant steels are usually used in aggressive environments. In order to be able to compare the corrosion rate of stainless steel with steel S235JRC, it was decided to carry out the tests based on the methodology of testing corrosion-resistant steels. Corrosion tests show that the tested steel in animal slurry as a corrosive environment is characterized through continuous corrosion process, which measure may be surface roughness. It was found that animal slurry with a room temperature is an aggressive corrosive medium of steel grades S235JRC. A gentle transition between the various stages of corrosion was noted, which is reflected in the surface roughness and corrosion velocity.

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Section: Introductionmentioning

confidence: 99%

Effect of 80% water solution of animal slurry on carbon structural S235JRC steel at room temperature

Lipiński

Karpisz

2021

20th International Scientific Conference Engineering for Rural Development Proceedings

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Microstructure and Mechanical Properties AlSi7Mg Alloy with Sr, Al and AlSi7Mg

Lipiński

2024

Manufacturing Technology

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Strength and malleability are important reasons for increasing applications of Al-Si alloys. Mechanical properties of Al-Si cast alloys depend not only on chemical composition but, more importantly, on microstructural features such as morphologies of dendritic α-rich in Al, eutectic β-rich in Si particles and other intermetallics that are present in the microstructure. The microstructure of an unmodified hypoeutectic AlSi7Mg alloy is responsible for the alloy's low strength parameters, and it limits the extent of practical applications. The mechanical properties of hypoeutectic silumins can be improved through chemical modification as well as traditional or technological processing. The improvement in mechanical properties generally has been attributed to the variations in the morphology and size of the eutectic silicon phase particles. This study presents the results of modification of an AlSi7Mg alloy with Sr, Al+ 10% Sr alloy and AlSi7Mg + 10% Sr master alloy. The tests were carried out on modified primary silumin alloy obtained at slow and fast cooling. Modifying additives in granular form and in the form of a rod were used. All additions were introduced into the alloy in an amount that guaranteed a constant strontium contribution to the modified alloy. The influence of the analyzed modifiers on the microstructure and mechanical properties of the processed alloy was presented in graphs. The modification of a hypoeutectic AlSi7Mg alloy improved the microstructure and alloy's properties. The results of the tests indicate that the microstructure and mechanical properties of the modified alloy are determined by the cooling rate of the modifier and its form. Higher parameters were obtained after modification of the AlSi7Mg alloy with a master alloy composed of Sr and AlSi7Mg alloy produced by rapid cooling and introduced in granular form.

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Analysis of the influence of surface condition on the corrosion behavior of alloy 2024

Cited by 2 publications

References 16 publications

Effect of 80% water solution of animal slurry on carbon structural S235JRC steel at room temperature

Effect of 80% water solution of animal slurry on carbon structural S235JRC steel at room temperature

Microstructure and Mechanical Properties AlSi7Mg Alloy with Sr, Al and AlSi7Mg

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