Výsledky vyhledávání - "Alatarvas, T. (Tuomas)"

Dissertation/ Thesis

Evolution of inclusion population in calcium treated ultra-high strength steels:novel applications of sample data treatment

Autor: Alatarvas, T. (Tuomas)

Non-metallic inclusions are unavoidable particles in steel and are often detrimental to the steelmaking process and the mechanical properties of the steel. While it is not feasible to remove all inclusions, in the well-established calcium treatment o

Externí odkaz: http://urn.fi/urn:isbn:9789526220987

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Experimental and modeling study of deformability of glassy CaO-(MnO)-Al2O3-SiO2 inclusions

Autor: Shu, Q. (Qifeng), You, C. (Chaoge), Alatarvas, T. (Tuomas), Fabritius, T. M. (Timo Matti Juhani)

The occurrence of non-deformable, non-metallic inclusions is the dominant reason for failure of wire during drawing and degrades service life for some steel grades, e.g., tire cord steel. To investigate the deformability of glassy inclusions in CaO-A

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2423::aa63f38dea3429472628da687cda7119
http://urn.fi/urn:nbn:fi-fe2022052438380

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Comparison of Impact Toughness in Simulated Coarse-Grained Heat-Affected Zone of Al-Deoxidized and Ti-Deoxidized Offshore Steels

Autor: Tervo, H. (Henri), Kaijalainen, A. (Antti), Javaheri, V. (Vahid), Ali, M. (Mohammed), Alatarvas, T. (Tuomas), Mehtonen, M. (Mikko), Anttila, S. (Severi), Kömi, J. (Jukka)

Publikováno v: Metals, Vol 11, Iss 1783, p 1783 (2021)

The presence of acicular ferrite (AF) in the heat-affected zone (HAZ) of steels used offshore is generally seen as beneficial for toughness. In this study, the effects of varying fractions of AF (0–49 vol.%) were assessed in the simulated, unaltere

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::3407d8e7de11362c41e1c748f6625f48
https://www.mdpi.com/2075-4701/11/11/1783

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Characterization of synthetic non-metallic inclusions consisting of TiN, Ti₂O₃, and oxides of Al₂O₃ and MgO·Al₂O₃ spinel using Raman spectroscopy

Autor: Gyakwaa, F. (Francis), Alatarvas, T. (Tuomas), Shu, Q. (Qifeng), Aula, M. (Matti), Fabritius, T. (Timo)

Steel quality and properties can be affected by the formation of complex inclusions, including Ti-based inclusions such as TiN and Ti₂O3 and oxides like Al₂O₃ and MgO·Al₂O₃ (MA). This study assessed the prospective use of Raman spectroscop

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2423::4b52e771966731dc14171cbe6fdfea17
http://urn.fi/urn:nbn:fi-fe2021111755755

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Applicability of heat transfer and solidification simulations in investigating microstructural banding in continuously cast steel

Autor: Alatarvas, T. (Tuomas), Jaskari, M. (Matias), Kaijalainen, A. (Antti), Koskenniska, S. (Sami), Asikainen, J. (Jari), Haapasalmi, J. (Johanna), Välimaa, K. (Kari)

Microstructural banding is observed as alternating microstructures in cast steel products, parallel to cast/rolling direction. Banding, causing hardenability issues and anisotropy of mechanical properties, is considered to originate from the interden

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2423::161f360954dc2c1200e3fc37dc18ec63
http://urn.fi/urn:nbn:fi-fe2021101250690

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Quantification of synthetic nonmetallic inclusion multiphase mixtures from a CaO–Al2O3–MgO–CaS system using Raman spectroscopy

Autor: Gyakwaa, F. (Francis), Aula, M. (Matti), Alatarvas, T. (Tuomas), Shu, Q. (Qifeng), Huttula, M. (Marko), Fabritius, T. (Timo)

Raman spectroscopy has features such as its relatively easy sample preparation. Therefore, its application plays a role in nonmetallic inclusion studies. Herein, use of Raman spectroscopy to quantify multiphase synthetic inclusion mixtures consisting

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2423::40dc5d0e4aa8bca21f2e51652e2733df
http://urn.fi/urn:nbn:fi-fe2020111390353

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Gas composition change in a single sinter, pellet and coke layer in simulated blast furnace conditions

Autor: Alatarvas, T. (Tuomas), Iljana, M. (Mikko), Mattila, O. (Olli), Paananen, T. (Timo), Fabritius, T. (Timo)

In spite of the vast amount of research regarding the operation of blast furnace, the gas composition change in a single charge material layer in a blast furnace is not an extensively studied research area. Iron-bearing material and coke are charged

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2423::673a8489c7b388cca5f6541e0bf9969d
http://urn.fi/urn:nbn:fi-fe202101151898

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