The role of initial structure on transformation kinetics during cooling of steel C10

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F17%3A10238418" target="_blank" >RIV/61989100:27360/17:10238418 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

The role of initial structure on transformation kinetics during cooling of steel C10

Original language description

Transformation kinetics of austenite during cooling is influenced by several factors as chemical content or thermomechanical parameters (temperature, dwell time, deformation, strain rate, cooling rate) and initial structure state, consequently initial austenite grain size. The aim of this article was just to assess the effect of initial structure state (casted, deformed, purposely extremely coarsened) on transformation kinetics of austenite during cooling of steel C10, which was moreover deformed uniaxial compression. This comparison was done on the basis of the construction of three transformation diagrams type DCCT (deformation continuously cooling temperature) for different initial structure state of hypoeutectoid steel C10. DCCT diagrams were constructed on the basis of combination dilatometric tests with an influence previous deformation, metallographic analyses, and measurements of Brinell hardness. For the execution of the experiment, the new optical dilatometric module of the plastometer Gleeble 3800 was used. The experiment demonstrated, that in the case of hypoeutectoid and low alloyed steels and in the case of slowly cooling rate (under 10°C/s) area of ferrite and pearlite formation were not dramatically shifted influence different initial grain size. In the case of higher cooling rate are already evident temperature shifts in areas of ferrite and pearlite. The obtained results show that the finer grain size shifted temperature border area of formation of ferrite and pearlite upward towards higher temperatures. Moreover, in the case of purposely extremely coarsened structure, metallographic analyses showed the formation of acicular ferrite after cooling of cooling rate 35 °C/s.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20501 - Materials engineering

Project

<a href="/en/project/LO1203" target="_blank" >LO1203: Regional Materials Science and Technology Centre - Feasibility Program</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

METAL 2017: conference proceedings : 26th International Conference on Metallurgy and Materials : (reviewed version) : May 24th-26th 2017, Hotel Voroněž I, Brno, Czech Republic, EU

ISBN

978-80-87294-79-6

ISSN

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e-ISSN

neuvedeno

Number of pages

6

Pages from-to

383-389

Publisher name

Tanger

Place of publication

Ostrava

Event location

Brno

Event date

May 24, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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