Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Juha Pyykkönen"'
Autor:
Juha Jokisaari, Joonas Ilmola, Jari Larkiola, Olli Leinonen, Juha Pyykkönen, Aarne Pohjonen, Oskari Seppälä, Sami Koskenniska
Dual-phase steels are generally used in the car industry due to high tensile strength and good formability, which are obtained by a mixture of bainite and ferrite phases. This microstructure is achieved through slow rate coil cooling. However, the ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4119312d9e11f6ddfac9546ab1011481
http://urn.fi/urn:nbn:fi-fe202101181983
http://urn.fi/urn:nbn:fi-fe202101181983
Publikováno v:
Materials Science Forum. 941:170-175
Hot rolled structural plate steels with yield strength of 700 MPa are an excellent choice for a variety of demanding applications that require excellent toughness and welding properties. SSAB has developed novel hot-rolled plate steels that are produ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aff45e7e40301318a4495803e5491bbb
https://doi.org/10.4028/www.scientific.net/msf.941.170
https://doi.org/10.4028/www.scientific.net/msf.941.170
An Integrated Model for Predicting Hierarchical Microstructure Evolution of Steel during Hot Rolling
Publikováno v:
Materials Science Forum. 941:394-399
A robust model for calculating the necessary process variables such as strain, strain rate and temperature in hot rolling of a steel plate or strip is presented in this paper. The applied approach includes a well-constructed velocity function in the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80d2d2cc5da375cea1d5dc45499112fb
https://doi.org/10.4028/www.scientific.net/msf.941.394
https://doi.org/10.4028/www.scientific.net/msf.941.394
Publikováno v:
Key Engineering Materials. 716:368-375
We present calculations of austenite to bainite phase transformation start for different cooling paths and for different steel compositions and a method to estimate the cooling water required to cool a steel strip to desired temperatures during water
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bbfc0b73ec96eb8d6490e0a98322ee4b
https://doi.org/10.4028/www.scientific.net/kem.716.368
https://doi.org/10.4028/www.scientific.net/kem.716.368
Publikováno v:
Materials Science Forum. :2706-2711
Recent trends in the production of high strength steel plate call for increasingly sophisticated thermo-mechanical treatment schedules, including the use of high rate accelerated cooling after finish rolling in order to achieve the desired microstruc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a657e7e346023fe11c8860abca147bfd
https://doi.org/10.4028/www.scientific.net/msf.638-642.2706
https://doi.org/10.4028/www.scientific.net/msf.638-642.2706
Publikováno v:
Materials Performance and Characterization. 4:MPC20150001
For conventional reheated and quenched (RQ) steels, the level of alloying necessary to achieve a given hardenability and hardness can be estimated from calculated Jominy curves or ideal critical diameters (DI) given in ASTM A255-10(2014). However, fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e0e4edd50a145eac072009609d87701
https://doi.org/10.1520/mpc20150001
https://doi.org/10.1520/mpc20150001
Autor:
Timo Kulju, Juha Pyykkönen, David C. Martin, Esa Muurinen, Riitta L. Keiski, N. Prabhu, N. Kobasko, S. W. Dean
Publikováno v:
Journal of ASTM International. 8:103382
This paper analyzes film boiling phenomena on a flat, horizontal hot steel plate using the volume of fluid method. The influence of water delivery velocity and plate surface temperature on film boiling behaviour has been quantified for the case of a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7efadede11839ce323f0c7a3961d4f0
https://doi.org/10.1520/jai103382
https://doi.org/10.1520/jai103382