Use of High-temperature Thermal Analysis for Determination of the Liquidus and Solidus Temperatures for Bearing Steels

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F16%3A86097378" target="_blank" >RIV/61989100:27360/16:86097378 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Use of High-temperature Thermal Analysis for Determination of the Liquidus and Solidus Temperatures for Bearing Steels

Popis výsledku v původním jazyce

The paper is devoted to comparison of the solidus and liquidus temperatures determined by methods of thermal analysis for industrially produced steel grade 100CrMo7. Two modern devices for high temperature thermal analysis were used. Method of direct thermal analysis (PTA) was applied on the device STA 449 F3 Jupiter with use of samples weighing approx. 22 g. The samples weighing approx. 120 to 210 mg were subjected to a differential thermal analysis (DTA) on the device Setaram SETSYS 18TM. Solidus and liquidus temperatures were obtained on the basis of evaluation of experimentally obtained curves during heating (DTA) and cooling (PTA - only liquidus temperature). The results of measurements using methods of thermal analysis were also confronted with the corresponding temperatures obtained from the industrial partner and with the temperatures obtained using specialised programs IDS and ThermoCalc. Identically as in earlier works it was proved that for more accurate determination of the liquidus and solidus temperatures of real steel grades it is very beneficial to use multiple methods of high-temperature thermal analysis. The liquidus temperature obtained by both methods (PTA and DTA) differs only by 1 oC. Variability of the results from individual experiments using different methods is also very low, proving thus the robustness of both methods used. The importance of using different methods of thermal analysis, their mutual verification, is also confirmed by the fact that theoretically determined temperatures differ from the experimentally determined values.

Název v anglickém jazyce

Use of High-temperature Thermal Analysis for Determination of the Liquidus and Solidus Temperatures for Bearing Steels

Popis výsledku anglicky

The paper is devoted to comparison of the solidus and liquidus temperatures determined by methods of thermal analysis for industrially produced steel grade 100CrMo7. Two modern devices for high temperature thermal analysis were used. Method of direct thermal analysis (PTA) was applied on the device STA 449 F3 Jupiter with use of samples weighing approx. 22 g. The samples weighing approx. 120 to 210 mg were subjected to a differential thermal analysis (DTA) on the device Setaram SETSYS 18TM. Solidus and liquidus temperatures were obtained on the basis of evaluation of experimentally obtained curves during heating (DTA) and cooling (PTA - only liquidus temperature). The results of measurements using methods of thermal analysis were also confronted with the corresponding temperatures obtained from the industrial partner and with the temperatures obtained using specialised programs IDS and ThermoCalc. Identically as in earlier works it was proved that for more accurate determination of the liquidus and solidus temperatures of real steel grades it is very beneficial to use multiple methods of high-temperature thermal analysis. The liquidus temperature obtained by both methods (PTA and DTA) differs only by 1 oC. Variability of the results from individual experiments using different methods is also very low, proving thus the robustness of both methods used. The importance of using different methods of thermal analysis, their mutual verification, is also confirmed by the fact that theoretically determined temperatures differ from the experimentally determined values.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

<a href="/cs/project/LO1203" target="_blank" >LO1203: Regionální materiálově technologické výzkumné centrum - Program udržitelnosti</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Hutnické listy

ISSN

0018-8069

e-ISSN

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Svazek periodika

LXIX

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

6

Strana od-do

4-9

Kód UT WoS článku

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EID výsledku v databázi Scopus

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