Effects of Cooling Rate in an Innovative Heat Treatment Route for High-Strength Steels
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F18%3A43950907" target="_blank" >RIV/49777513:23210/18:43950907 - isvavai.cz</a>
Výsledek na webu
<a href="http://arl.ujep.cz/arl-ujep/en/csg/?repo=ujeprepo&key=77039484032" target="_blank" >http://arl.ujep.cz/arl-ujep/en/csg/?repo=ujeprepo&key=77039484032</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.21062/ujep/46.2018/a/1213-2489/MT/18/1/16" target="_blank" >10.21062/ujep/46.2018/a/1213-2489/MT/18/1/16</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Effects of Cooling Rate in an Innovative Heat Treatment Route for High-Strength Steels
Popis výsledku v původním jazyce
The requirement for high strength and ductility is usually associated with martensitic microstructure with a certain amount of retained austenite. One of the innovative heat treatment processes that can lead to such micro-structure is the Q&P process (Quenching and Partitioning). It can produce microstructures consisting of mar-tensite and a certain amount of retained austenite, which exhibit strengths above 2000 MPa and elongation levels of more than 10%. The objective of this research was to explore the effects of the cooling rate in the Q&P process and evaluate the effects of various microstructure constituents on mechanical properties of high-strength steels. Three newly-created experimental steels, which contained 0.43% carbon and had reduced Ms temperatures thanks to manganese addition, were subjected to several heat treatment routes which involved various cooling rates. The cooling rates were chosen on the basis of calculations using the JMatPro software and earlier results. It was found that by varying the cooling rate one can obtain various mixed microstructures and a wide range of mechanical properties. The strengths were in the range of 1200-2300 MPa and A5mm elongation levels were up to 18%. Because the amount of retained austenite has a considerable impact on the resulting mechanical properties, it was measured by means of X-ray diffraction.
Název v anglickém jazyce
Effects of Cooling Rate in an Innovative Heat Treatment Route for High-Strength Steels
Popis výsledku anglicky
The requirement for high strength and ductility is usually associated with martensitic microstructure with a certain amount of retained austenite. One of the innovative heat treatment processes that can lead to such micro-structure is the Q&P process (Quenching and Partitioning). It can produce microstructures consisting of mar-tensite and a certain amount of retained austenite, which exhibit strengths above 2000 MPa and elongation levels of more than 10%. The objective of this research was to explore the effects of the cooling rate in the Q&P process and evaluate the effects of various microstructure constituents on mechanical properties of high-strength steels. Three newly-created experimental steels, which contained 0.43% carbon and had reduced Ms temperatures thanks to manganese addition, were subjected to several heat treatment routes which involved various cooling rates. The cooling rates were chosen on the basis of calculations using the JMatPro software and earlier results. It was found that by varying the cooling rate one can obtain various mixed microstructures and a wide range of mechanical properties. The strengths were in the range of 1200-2300 MPa and A5mm elongation levels were up to 18%. Because the amount of retained austenite has a considerable impact on the resulting mechanical properties, it was measured by means of X-ray diffraction.
Klasifikace
Druh
J<sub>SC</sub> - Článek v periodiku v databázi SCOPUS
CEP obor
—
OECD FORD obor
20301 - Mechanical engineering
Návaznosti výsledku
Projekt
<a href="/cs/project/LO1502" target="_blank" >LO1502: Rozvoj Regionálního technologického institutu</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2018
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Manufacturing Technology
ISSN
1213-2489
e-ISSN
—
Svazek periodika
18
Číslo periodika v rámci svazku
1
Stát vydavatele periodika
CZ - Česká republika
Počet stran výsledku
6
Strana od-do
16-21
Kód UT WoS článku
—
EID výsledku v databázi Scopus
2-s2.0-85049584081