Determination of CCT Diagram by Dilatometry Analysis of High-Strength Low-Alloy S960MC Steel

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24210%2F22%3A00010270" target="_blank" >RIV/46747885:24210/22:00010270 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.mdpi.com/1996-1944/15/13/4637" target="_blank" >https://www.mdpi.com/1996-1944/15/13/4637</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ma15134637" target="_blank" >10.3390/ma15134637</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Determination of CCT Diagram by Dilatometry Analysis of High-Strength Low-Alloy S960MC Steel

Popis výsledku v původním jazyce

High-strength steels are used more than general structural steel due to their combination of properties such as high strength, good toughness and weldability. They are mainly used in the manufacture of heavy vehicles for the mining industry, cranes, transportation, etc. However, welding these grades of steel brings new challenges. Also, a simulation for welding high-strength steel is required more often. To insert a material database into the simulation program, it is necessary to conduct investigations using CCT (Continuous Cooling Transformation) diagrams, welded joints research, and more. To investigate the behavior of S960MC steel during heating and cooling, we used dilatometry analysis supported by EBSD (Electron Backscatter Diffraction) analysis. A CCT diagram was constructed. The transformation temperatures of A(c1) and A(c3) increase with increasing heating rate. The A(c1) temperature increased by 54 degrees C and the A(c3) temperatures by 24 degrees C as the heating rate increased from 0.1 degrees C/s to 250 degrees C/s. The austenite decomposition temperatures have a decreasing trend in the cooling phase with increasing cooling rate. As the cooling rate changes from 0.03 degrees C/s to 100 degrees C/s, the initial transformation temperature drops from 813 degrees C to 465 degrees C. An increase in the cooling rate means a higher proportion of bainite and martensite. At the same time, the hardness increases from 119 HV10 to 362 HV10.

Název v anglickém jazyce

Determination of CCT Diagram by Dilatometry Analysis of High-Strength Low-Alloy S960MC Steel

Popis výsledku anglicky

High-strength steels are used more than general structural steel due to their combination of properties such as high strength, good toughness and weldability. They are mainly used in the manufacture of heavy vehicles for the mining industry, cranes, transportation, etc. However, welding these grades of steel brings new challenges. Also, a simulation for welding high-strength steel is required more often. To insert a material database into the simulation program, it is necessary to conduct investigations using CCT (Continuous Cooling Transformation) diagrams, welded joints research, and more. To investigate the behavior of S960MC steel during heating and cooling, we used dilatometry analysis supported by EBSD (Electron Backscatter Diffraction) analysis. A CCT diagram was constructed. The transformation temperatures of A(c1) and A(c3) increase with increasing heating rate. The A(c1) temperature increased by 54 degrees C and the A(c3) temperatures by 24 degrees C as the heating rate increased from 0.1 degrees C/s to 250 degrees C/s. The austenite decomposition temperatures have a decreasing trend in the cooling phase with increasing cooling rate. As the cooling rate changes from 0.03 degrees C/s to 100 degrees C/s, the initial transformation temperature drops from 813 degrees C to 465 degrees C. An increase in the cooling rate means a higher proportion of bainite and martensite. At the same time, the hardness increases from 119 HV10 to 362 HV10.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Materials

ISSN

1996-1944

e-ISSN

—

Svazek periodika

15

Číslo periodika v rámci svazku

13

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

19

Strana od-do

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Kód UT WoS článku

000825620100001

EID výsledku v databázi Scopus

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