Two-body abrasion resistance of high-carbon high-silicon steel: Metastable austenite vs nanostructured bainite

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F18%3AN0000016" target="_blank" >RIV/26316919:_____/18:N0000016 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0043164818309906?utm_campaign=STMJ_75273_AUTH_SERV_PPUB&utm_medium=email&utm_dgroup=&utm_acid=137863039&SIS_ID=0&dgcid=STMJ_75273_AUTH_SERV_PPUB&CMX_ID=&utm_in=DM409026&utm_source=AC_30" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0043164818309906?utm_campaign=STMJ_75273_AUTH_SERV_PPUB&utm_medium=email&utm_dgroup=&utm_acid=137863039&SIS_ID=0&dgcid=STMJ_75273_AUTH_SERV_PPUB&CMX_ID=&utm_in=DM409026&utm_source=AC_30</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.wear.2018.11.003" target="_blank" >10.1016/j.wear.2018.11.003</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Two-body abrasion resistance of high-carbon high-silicon steel: Metastable austenite vs nanostructured bainite

Popis výsledku v původním jazyce

In the current study, a high-carbon, high-silicon steel (1.21 wt% C, 2.56 wt% Mn, 1.59 wt% Si) was subjected to different heat treatments ((a) quenching from 800-1000 degrees C; (b) quenching from 800-1000 degrees C with further bainitizing at 250 degrees C for 8 days), resulting in microstructures consisting (a) of austenite and martensite (up to 94 vol % austenite) or (b) of austenite, nanobainite, and tempered martensite (up to 39 vol% nanobainite). The work is carried out using SEM, XRD, microhardness measurement, surface profile characterization, and two-body abrasion testing. It was found that steel wear behaviour is strongly dependent on austenite volume fraction and its metastability to mechanically-induced martensite transformation under wear. Austenite enrichment with carbon (upon carbides dissolution or bainite transformation) inhibits mechanically-induced transformation leading to decrease in microhardness increment after wear test and to an increase in wear rate. Specimens asquenched from 900-1000 degrees C are found to have the highest wear resistance. This is attributed to the higher metastability of the retained austenite of these specimens. Nanobainite-containing specimens exhibit suppressed TRIP-effect under abrasion. The specimens containing 60-94 vol% of metastable austenite are by 1.5-1.8 times more wear resistant compared with the specimens consisting of 10-39 vol% nanobainite and 49-55 vol% of more stable austenite. Also, the relationship between wear behaviour and surface profile of the worn specimens is discussed.

Název v anglickém jazyce

Two-body abrasion resistance of high-carbon high-silicon steel: Metastable austenite vs nanostructured bainite

Popis výsledku anglicky

In the current study, a high-carbon, high-silicon steel (1.21 wt% C, 2.56 wt% Mn, 1.59 wt% Si) was subjected to different heat treatments ((a) quenching from 800-1000 degrees C; (b) quenching from 800-1000 degrees C with further bainitizing at 250 degrees C for 8 days), resulting in microstructures consisting (a) of austenite and martensite (up to 94 vol % austenite) or (b) of austenite, nanobainite, and tempered martensite (up to 39 vol% nanobainite). The work is carried out using SEM, XRD, microhardness measurement, surface profile characterization, and two-body abrasion testing. It was found that steel wear behaviour is strongly dependent on austenite volume fraction and its metastability to mechanically-induced martensite transformation under wear. Austenite enrichment with carbon (upon carbides dissolution or bainite transformation) inhibits mechanically-induced transformation leading to decrease in microhardness increment after wear test and to an increase in wear rate. Specimens asquenched from 900-1000 degrees C are found to have the highest wear resistance. This is attributed to the higher metastability of the retained austenite of these specimens. Nanobainite-containing specimens exhibit suppressed TRIP-effect under abrasion. The specimens containing 60-94 vol% of metastable austenite are by 1.5-1.8 times more wear resistant compared with the specimens consisting of 10-39 vol% nanobainite and 49-55 vol% of more stable austenite. Also, the relationship between wear behaviour and surface profile of the worn specimens is discussed.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/LO1412" target="_blank" >LO1412: Rozvoj Západočeského materiálově metalurgického Centra</a><br>

Návaznosti

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

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

WEAR

ISSN

0043-1648

e-ISSN

1873-2577

Svazek periodika

418

Číslo periodika v rámci svazku

2018

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

12

Strana od-do

24-35

Kód UT WoS článku

000456442300003

EID výsledku v databázi Scopus

2-s2.0-85056692271