Influence of cooling rate on microstructure and mechanical properties of 42SiCr steel after Q&P process

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F19%3A43954372" target="_blank" >RIV/49777513:23210/19:43954372 - isvavai.cz</a>

Výsledek na webu

<a href="https://arl.ujep.cz/arl-ujep/cs/csg/?repo=ujeprepo&key=10891375041" target="_blank" >https://arl.ujep.cz/arl-ujep/cs/csg/?repo=ujeprepo&key=10891375041</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.21062/ujep/338.2019/a/1213-2489/MT/19/4/583" target="_blank" >10.21062/ujep/338.2019/a/1213-2489/MT/19/4/583</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of cooling rate on microstructure and mechanical properties of 42SiCr steel after Q&P process

Popis výsledku v původním jazyce

Using innovative methods of heat treatment (HT) for high-strength steels, such as the Q&amp;P process, very favoura-ble ratios of ductility and strength can be achieved. Materials processed by this technology have higher content of retained austenite, and therefore better ductility. This experiment deals with HT of 42SiCr steel. The conventional HT and the Q&amp;P processing are compared with respect to material properties. Metallographic analysis, hardness measurement, X-ray diffraction phase analysis (of retained austenite content) and tensile testing were performed. For the hardened samples, the effects of the cooling rate on their microstructure were assessed and the measured real-world data were compared with the simulations performed in the FEA simulation software DEFORMTM based on the thermocouple records. After a conventional HT, the material showed little sensitivity to the cooling rate. In contrast, the Q&amp;P process with higher quenching temperatures resulted in a higher austenite content and elonga-tion of up to 15 % at a strength of 1800 MPa.

Název v anglickém jazyce

Influence of cooling rate on microstructure and mechanical properties of 42SiCr steel after Q&P process

Popis výsledku anglicky

Using innovative methods of heat treatment (HT) for high-strength steels, such as the Q&amp;P process, very favoura-ble ratios of ductility and strength can be achieved. Materials processed by this technology have higher content of retained austenite, and therefore better ductility. This experiment deals with HT of 42SiCr steel. The conventional HT and the Q&amp;P processing are compared with respect to material properties. Metallographic analysis, hardness measurement, X-ray diffraction phase analysis (of retained austenite content) and tensile testing were performed. For the hardened samples, the effects of the cooling rate on their microstructure were assessed and the measured real-world data were compared with the simulations performed in the FEA simulation software DEFORMTM based on the thermocouple records. After a conventional HT, the material showed little sensitivity to the cooling rate. In contrast, the Q&amp;P process with higher quenching temperatures resulted in a higher austenite content and elonga-tion of up to 15 % at a strength of 1800 MPa.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Manufacturing Technology

ISSN

1213-2489

e-ISSN

—

Svazek periodika

19

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

6

Strana od-do

583-588

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85077152486