Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Aarne Pohjonen"'
Autor:
Aarne Pohjonen
Publikováno v:
AIMS Materials Science, Vol 8, Iss 6, Pp 852-866 (2021)
Numerical studies were conducted to investigate the applicability of cooling strategies for controlledly producing a microstructure in the steel strip or plate, which changes as function of the plate length. In the numerical simulations, the water sp
Externí odkaz:
https://doaj.org/article/5a8f8f3cbbaf4bda8077be7cae84f220
Publikováno v:
Materials & Design, Vol 182, Iss , Pp - (2019)
Numerical and Gleeble experimental data are combined to predict potential microstructure and hardness profiles through the wall thickness of an induction hardened slurry transportation pipe made of a recently developed 0.4 wt% C, Nb-microalloyed stee
Externí odkaz:
https://doaj.org/article/19bf7feae9f1422293bdabd49f4652e8
Publikováno v:
Metals, Vol 8, Iss 7, p 540 (2018)
We present a computational method for calculating the phase transformation start for arbitrary cooling paths and for different steel compositions after thermomechanical treatments. We apply the method to quantitatively estimate how much austenite def
Externí odkaz:
https://doaj.org/article/87818ad105924fc2a69b1492b9016b7b
Autor:
Juho Luukkonen, Aarne Pohjonen, Seppo Louhenkilpi, Jyrki Miettinen, Mikko J. Sillanpää, Erkki Laitinen
Publikováno v:
Metallurgical and Materials Transactions B.
Continuous cooling transformation (CCT) diagrams can be constructed by empirical methods, which is expensive and time consuming, or by fitting a model to available experimental data. Examples of data-driven models implemented so far include regressio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9edf280473eb815d6289c3695141b351
https://doi.org/10.1007/s11663-023-02782-9
https://doi.org/10.1007/s11663-023-02782-9
Autor:
Aarne Pohjonen
A novel mathematical formulation is presented for describing growth of phase in solid-to-solid phase transformations and it is applied for describing austenite to ferrite transformation. The formulation includes the effects of transformation eigenstr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5472aa7b3ab2310fd4b1ffe2bd179a4a
https://doi.org/10.22541/au.165735553.38384107/v1
https://doi.org/10.22541/au.165735553.38384107/v1
Autor:
Jyrki Miettinen, Sami Koskenniska, Aarne Pohjonen, Jari Larkiola, Jukka Kömi, Seppo Louhenkilpi, Mahesh C. Somani
Publikováno v:
Metallurgical and Materials Transactions B. 52:1640-1663
Funding Information: This research was conducted within the framework of the Genome of Steel project funded by the Academy of Finland (Project #311934). Publisher Copyright: © 2021, The Author(s). Copyright: Copyright 2021 Elsevier B.V., All rights
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::56df1e8395a8f06ccc0285a63b9f7f9e
https://doi.org/10.1007/s11663-021-02130-9
https://doi.org/10.1007/s11663-021-02130-9
Publikováno v:
Materials Science Forum. 1016:1153-1158
We have determined different phase fractions from microscopy images using semi-automated image analysis fitting technique, and in addition we have classified each phase according to its hardness. The distribution of grayscale pixels of different phas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb4e9a0ec868dc47d921566dc46ee26c
https://doi.org/10.4028/www.scientific.net/msf.1016.1153
https://doi.org/10.4028/www.scientific.net/msf.1016.1153
Autor:
Nana Kena Frempong, Jukka Kömi, Aarne Pohjonen, Henry Martin, Mahesh C. Somani, Peter Amoako-Yirenkyi
Publikováno v:
Metallurgical and Materials Transactions B. 52:223-235
The interaction of different alloying elements has a significant impact on the mechanical and microstructural properties of steel products due to the thermodynamic and kinetic effect. This article presents a statistically developed and validated mode
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::52fd0343bc0f633f46b89be8fff56e09
https://doi.org/10.1007/s11663-020-01991-w
https://doi.org/10.1007/s11663-020-01991-w
Autor:
Jukka Kömi, Joonas Ilmola, Jari Larkiola, Sampo Uusikallio, Sami Koskenniska, Aarne Pohjonen, Jussi Paavola
Publikováno v:
Procedia Manufacturing. 50:488-491
Accurate control of the temperature of the workpiece is crucial when carrying out thermal processing of steel. Effective heat transfer coefficient for water cooling of hot rolled steel was calibrated using spray nozzles with different amounts of wate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::29064aa493df21449fd7d3444e34ccf9
https://doi.org/10.1016/j.promfg.2020.08.088
https://doi.org/10.1016/j.promfg.2020.08.088