Using the design of experiments methodology to evaluate the heat treatment of additively manufactured maraging steel

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23210%2F23%3A43969534" target="_blank" >RIV/49777513:23210/23:43969534 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.jmrt.2023.09.117" target="_blank" >https://doi.org/10.1016/j.jmrt.2023.09.117</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jmrt.2023.09.117" target="_blank" >10.1016/j.jmrt.2023.09.117</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Using the design of experiments methodology to evaluate the heat treatment of additively manufactured maraging steel

Popis výsledku v původním jazyce

The effect of the processing parameters on the final microstructure and mechanical properties was investigated for additively manufactured maraging tool steel 1.2709. First, an effective range of appropriate combinations of heat treatment parameters was found using the design of experiments (DOE) method. This suggested 17 variations of heat treatment regimes. The effect of input parameters (initial condition, hardening temperature, hold at hardening temperature) on the output values (mechanical properties) was then statistically evaluated. Three initial conditions of the additively manufactured (AM) steel were used: as-built, annealed at 820 °C for 1 h and annealed at 940°C for 2 h. A subsequent heat treatment in the region of 250 °C - 750 °C was considered with holds of 0e6 h at the temperatures. Based on the measured mechanical properties, regression analysis was performed and optimal models for the prediction of individual mechanical properties were produced. The coefficient of determination of the models for yield and ultimate strengths and hardness reached above 95% when hardening temperature was considered a significant factor. It was around 98% in the case of tensile strength and hardness when the additional effect of the initial condition was also included in the models. This means a very reliable prediction of those mechanical properties can be expected. On the other hand, the model for total elongation can explain only 41% of the measured values, as not a single statistically significant factor was identified.

Název v anglickém jazyce

Using the design of experiments methodology to evaluate the heat treatment of additively manufactured maraging steel

Popis výsledku anglicky

The effect of the processing parameters on the final microstructure and mechanical properties was investigated for additively manufactured maraging tool steel 1.2709. First, an effective range of appropriate combinations of heat treatment parameters was found using the design of experiments (DOE) method. This suggested 17 variations of heat treatment regimes. The effect of input parameters (initial condition, hardening temperature, hold at hardening temperature) on the output values (mechanical properties) was then statistically evaluated. Three initial conditions of the additively manufactured (AM) steel were used: as-built, annealed at 820 °C for 1 h and annealed at 940°C for 2 h. A subsequent heat treatment in the region of 250 °C - 750 °C was considered with holds of 0e6 h at the temperatures. Based on the measured mechanical properties, regression analysis was performed and optimal models for the prediction of individual mechanical properties were produced. The coefficient of determination of the models for yield and ultimate strengths and hardness reached above 95% when hardening temperature was considered a significant factor. It was around 98% in the case of tensile strength and hardness when the additional effect of the initial condition was also included in the models. This means a very reliable prediction of those mechanical properties can be expected. On the other hand, the model for total elongation can explain only 41% of the measured values, as not a single statistically significant factor was identified.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/EF18_069%2F0010040" target="_blank" >EF18_069/0010040: Výzkum aditivních technologií pro budoucí uplatnění ve strojírenské praxi - RTI plus</a><br>

Návaznosti

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

Journal of Materials Research and Technology JMR&amp;T

ISSN

2238-7854

e-ISSN

2214-0697

Svazek periodika

26

Číslo periodika v rámci svazku

SEP-OCT 2023

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

16

Strana od-do

8688-8703

Kód UT WoS článku

001087101700001

EID výsledku v databázi Scopus

2-s2.0-85173441942