Effect of Cu Alloying on Mechanical Properties of Medium-C Steel after Long-Time Tempering at 500 degrees C

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F23%3A00571078" target="_blank" >RIV/68081723:_____/23:00571078 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.mdpi.com/1996-1944/16/6/2390" target="_blank" >https://www.mdpi.com/1996-1944/16/6/2390</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ma16062390" target="_blank" >10.3390/ma16062390</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of Cu Alloying on Mechanical Properties of Medium-C Steel after Long-Time Tempering at 500 degrees C

Popis výsledku v původním jazyce

This research studies the influence of the copper alloying of medium-carbon steel on mechanical properties after quenching and tempering at 500 degrees C. The microstructure was characterised using SEM, EBSD, TEM, and XRD analysis. The mechanical properties were comprehensively investigated using hardness measurements, tensile and Charpy impact tests and solid solution, grain boundary, dislocation, and precipitation strengthening contributions were estimated. Higher yield strength for Cu-alloyed steel was confirmed at about 35-73 MPa. The precipitation strengthening contribution from Cu precipitates in the range of 11-49 MPa was calculated. The interaction between Cu precipitates and dislocations retards the decrease in dislocation density. Similar values of effective grain size of martensite crystals were measured for Cu-alloyed and Cu-free steel as well. Copper alloyed steel exhibited significantly deteriorated impact toughness, total plastic elongation, and reduction of area. The size of Cu precipitates ranged from 8.3 nm after tempering at 500 degrees C for 6 h to 13.9 nm after tempering for 48 h.

Název v anglickém jazyce

Effect of Cu Alloying on Mechanical Properties of Medium-C Steel after Long-Time Tempering at 500 degrees C

Popis výsledku anglicky

This research studies the influence of the copper alloying of medium-carbon steel on mechanical properties after quenching and tempering at 500 degrees C. The microstructure was characterised using SEM, EBSD, TEM, and XRD analysis. The mechanical properties were comprehensively investigated using hardness measurements, tensile and Charpy impact tests and solid solution, grain boundary, dislocation, and precipitation strengthening contributions were estimated. Higher yield strength for Cu-alloyed steel was confirmed at about 35-73 MPa. The precipitation strengthening contribution from Cu precipitates in the range of 11-49 MPa was calculated. The interaction between Cu precipitates and dislocations retards the decrease in dislocation density. Similar values of effective grain size of martensite crystals were measured for Cu-alloyed and Cu-free steel as well. Copper alloyed steel exhibited significantly deteriorated impact toughness, total plastic elongation, and reduction of area. The size of Cu precipitates ranged from 8.3 nm after tempering at 500 degrees C for 6 h to 13.9 nm after tempering for 48 h.

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

2023

Kód důvěrnosti údajů

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

Název periodika

Materials

ISSN

1996-1944

e-ISSN

1996-1944

Svazek periodika

16

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

17

Strana od-do

2390

Kód UT WoS článku

000959593300001

EID výsledku v databázi Scopus

2-s2.0-85151991125