Effects of femtosecond laser surface modified WC and NbC based inserts during the face-milling of automotive Grey Cast Iron (a-GCI)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F25%3A00379904" target="_blank" >RIV/68407700:21220/25:00379904 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.ijrmhm.2025.107068" target="_blank" >https://doi.org/10.1016/j.ijrmhm.2025.107068</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijrmhm.2025.107068" target="_blank" >10.1016/j.ijrmhm.2025.107068</a>

Result language

angličtina

Original language name

Effects of femtosecond laser surface modified WC and NbC based inserts during the face-milling of automotive Grey Cast Iron (a-GCI)

Original language description

Rapid pulsed electric current sintering (PECS), TiC, TiC7N3 and Mo additions, and femtosecond (fs) laser surface modification (LSM) were used to improve the machining of automotive grey cast iron (a-GCI) using WC and NbC based cemented carbides cutting inserts. Additions of Mo and TiC as well as the use of PECS refined the grain sizes of NbC-12Ni based cermet from ~4.6 μm to ~1 μm, increasing the hardness (by ~3 GPa) and wear resistance. Shark skin (S-LSM) and pyramidal (P-LSM) patterns were introduced to improve the wear and mechanical impact resistance of the cutting inserts. Face milling of a-GCI was performed at 200 m/min cutting speed (Vc), 1.0 mm depth of cut (ap), and 0.1 mm/tooth feed rate (f). The insert cutting-edge wear and damage were evaluated after every pass using optical microscopy and high angular annular dark field scanning transmission electron microscopy (HAADF-STEM). The machining performance of the cutting inserts was assessed by cutting forces, wear, and cutting insert tool life. The PECS produced NbC-10TiC-12[Ni/Mo] (wt%) P-LSM cutting insert had the lowest flank wear rate (FWR) (1.44 μm/min) after 20 min of machining. In addition, both the S-LSM and P-LSM patterns improved the cutting insert tool life of PECS produced NbC-12[Ni/Mo] (wt%) blank (B) cutting insert by ~300 % and ~ 900 %. Resulting in FWRs reductions of the respective insert from 21.04 μm/min after 2 min of machining to 5.97 μm/min and 1.94 μm/min after 8 min and 20 min. In general, LSM improved the NbC based cutting inserts' tool life and reduced the FWRs.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20301 - Mechanical engineering

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

International Journal of Refractory Metals and Hard Materials

ISSN

0263-4368

e-ISSN

2213-3917

Volume of the periodical

128

Issue of the periodical within the volume

April

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

11

Pages from-to

1-11

UT code for WoS article

001408725300001

EID of the result in the Scopus database

2-s2.0-85215442232