Comparative analysis of machinability and microstructure in LPBF and conventionally processed M300 maraging steel

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F26%3A0199459" target="_blank" >RIV/00216305:26210/26:0199459 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.nature.com/articles/s41598-025-19719-8" target="_blank" >https://www.nature.com/articles/s41598-025-19719-8</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s41598-025-19719-8" target="_blank" >10.1038/s41598-025-19719-8</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comparative analysis of machinability and microstructure in LPBF and conventionally processed M300 maraging steel

Popis výsledku v původním jazyce

The heat treatment and machining can be considered as necessary post process operations to create functional components manufactured by means of laser powder bed fusion. Therefore, complex investigation of influence of microstructure on the machinability of maraging steel (MS) M300 parts produced by laser powder bed fusion (LPBF) and rolling was performed. The main evaluation was carried out in regard to hardness, milling forces, surface morphology, surface roughness, chip formation, and subsurface hardness and microstructure. The findings revealed that LPBF MS M300 after direct aging heat treatment, containing martensite with dispersed precipitates and reversed austenite, generated highest milling forces. Surface roughness of this material showed a lower surface roughness in comparison to as-built sample Due to the higher hardness, which caused a lower lateral plastic flow and most severe tool wear. The subsurface hardness under the milled area of direct aged samples increased by 24% (900 HV) in comparison to the bulk value, while in case of conventionally manufactured rolled sample the increase was only by 9%. More pronounced increase in subsurface hardness was measured on samples milled utilizing highest cutting speed (60 m.min-1). Furthermore, milling induced strain hardening affecting the subsurface area up to approximately 40 μm in depth.

Název v anglickém jazyce

Comparative analysis of machinability and microstructure in LPBF and conventionally processed M300 maraging steel

Popis výsledku anglicky

The heat treatment and machining can be considered as necessary post process operations to create functional components manufactured by means of laser powder bed fusion. Therefore, complex investigation of influence of microstructure on the machinability of maraging steel (MS) M300 parts produced by laser powder bed fusion (LPBF) and rolling was performed. The main evaluation was carried out in regard to hardness, milling forces, surface morphology, surface roughness, chip formation, and subsurface hardness and microstructure. The findings revealed that LPBF MS M300 after direct aging heat treatment, containing martensite with dispersed precipitates and reversed austenite, generated highest milling forces. Surface roughness of this material showed a lower surface roughness in comparison to as-built sample Due to the higher hardness, which caused a lower lateral plastic flow and most severe tool wear. The subsurface hardness under the milled area of direct aged samples increased by 24% (900 HV) in comparison to the bulk value, while in case of conventionally manufactured rolled sample the increase was only by 9%. More pronounced increase in subsurface hardness was measured on samples milled utilizing highest cutting speed (60 m.min-1). Furthermore, milling induced strain hardening affecting the subsurface area up to approximately 40 μm in depth.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Scientific Reports

ISSN

2045-2322

e-ISSN

—

Svazek periodika

15

Číslo periodika v rámci svazku

October

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

21

Strana od-do

—

Kód UT WoS článku

001596281700018

EID výsledku v databázi Scopus

2-s2.0-105018812905