Analysis of Phase Transformation Temperatures of Real Steel Grade

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F17%3A10237331" target="_blank" >RIV/61989100:27360/17:10237331 - 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

Analysis of Phase Transformation Temperatures of Real Steel Grade

Original language description

The paper deals with the study of phase transformation temperatures of two real grade steels. A series of thermal analysis measurements by Differential Thermal Analysis (DTA) and Direct Thermal Analysis (TA) were performed on two real grade medium carbon steel samples in low and high temperature regions. The eutectoid transition tem-perature (TE), end of α-ferrite to γ-austenite transition temperature (Tα→γ), solidus temperature (TS), peritectic tran-sition temperature (TP) and liquidus temperature (TL) were determined. The results were verified by statistic evalu-ation and they were compared with theoretical calculations carried out by InterDendritic Solidification (IDS) and Thermo-Calc™ (2015b, TCFE8; TC) software. The original experimental data of phase transformation temperatures were obtained by thermal analysis. Tempera-tures in low temperature region, the eutectoid transition temperatures and end of α-ferrite to γ-austenite transition temperatures, were determined only by differential thermal analysis method and verified by Thermo-Calc software. It can be said, that differential thermal analysis and Thermo-Calc are more versatile. All experimental values, show in general a high level of consistency and low level of variability. Both differential thermal analysis and direct thermal analysis are set correctly; the results are reproducible and comparable. The standard deviation of the re-sults did not exceed 2 °C and variation coefficient did not exceed 0.3 %. It is not possible to determine only one the most precise software or the one closer to the measured results. Besides one case, the software differed less (or it was equal to) 3 °C from each other. The comparison of thermo-analytical methods and software shows the following: in some cases, exceptional agreement, but in most cases the agreement remains poor. Therefore it is always vital to check the data by an experiment. The experimental temperatures obtained by the thermal analysis are expected to be used to optimize production (casting and solidification) and thermo-mechanical processing of the analysed steel grades.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

20501 - Materials engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

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

Name of the periodical

Hutnické listy

ISSN

0018-8069

e-ISSN

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Volume of the periodical

70

Issue of the periodical within the volume

2

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

6

Pages from-to

16-21

UT code for WoS article

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EID of the result in the Scopus database

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