Structure and Mechanical Properties of the 18Ni300 Maraging Steel Produced by Spark Plasma Sintering

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F21%3A43923064" target="_blank" >RIV/60461373:22310/21:43923064 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.mdpi.com/2075-4701/11/5/748/htm" target="_blank" >https://www.mdpi.com/2075-4701/11/5/748/htm</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/met11050748" target="_blank" >10.3390/met11050748</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Structure and Mechanical Properties of the 18Ni300 Maraging Steel Produced by Spark Plasma Sintering

Popis výsledku v původním jazyce

In this work, a new approach for compaction of the gas-atomized 18Ni300 maraging steel at two different temperatures of 1050 degrees C and 1150 degrees C using a progressive SPS technology is studied. Moreover, the influence of two heat treatments combining solution annealing and aging (SAT) and simply aging treatment (AT) on the microstructure and mechanical properties is investigated. It is found that samples compacted at 1050 degrees C had higher porosity compared to the almost non-porous material produced at 1150 degrees C. In addition, the difference of 100 degrees C for the compaction temperature successfully reduces the porosity from 0.86% down to 0.08%. Additionally, we discovered that the higher the compaction temperature, the higher the amount of retained gamma-Fe which positively affects the ductility of the samples. The subsequential heat treatment results in precipitation strengthening via the Ni3Mo precipitates. Microhardness of the SPS1050 and SPS1150 samples increase from 303 +/- 13 HV0.1 and 360 +/- 5 HV0.1 to 563 +/- 31 HV0.1 and 606 +/- 17 HV0.1, respectively. The sample compacted at 1150 degrees C shows the highest ultimate tensile strengths reaching up to 1940 +/- 6 MPa, while also showing 4% ductility.

Název v anglickém jazyce

Structure and Mechanical Properties of the 18Ni300 Maraging Steel Produced by Spark Plasma Sintering

Popis výsledku anglicky

In this work, a new approach for compaction of the gas-atomized 18Ni300 maraging steel at two different temperatures of 1050 degrees C and 1150 degrees C using a progressive SPS technology is studied. Moreover, the influence of two heat treatments combining solution annealing and aging (SAT) and simply aging treatment (AT) on the microstructure and mechanical properties is investigated. It is found that samples compacted at 1050 degrees C had higher porosity compared to the almost non-porous material produced at 1150 degrees C. In addition, the difference of 100 degrees C for the compaction temperature successfully reduces the porosity from 0.86% down to 0.08%. Additionally, we discovered that the higher the compaction temperature, the higher the amount of retained gamma-Fe which positively affects the ductility of the samples. The subsequential heat treatment results in precipitation strengthening via the Ni3Mo precipitates. Microhardness of the SPS1050 and SPS1150 samples increase from 303 +/- 13 HV0.1 and 360 +/- 5 HV0.1 to 563 +/- 31 HV0.1 and 606 +/- 17 HV0.1, respectively. The sample compacted at 1150 degrees C shows the highest ultimate tensile strengths reaching up to 1940 +/- 6 MPa, while also showing 4% ductility.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Metals

ISSN

2075-4701

e-ISSN

—

Svazek periodika

11

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

13

Strana od-do

—

Kód UT WoS článku

000662517800001

EID výsledku v databázi Scopus

2-s2.0-85121936360