Influence of the design of Ti (C, N)-based cermets with alternative binders on their performance and wear in milling
(2025) In Wear- Abstract
Ti (C, N) based cermet materials are predominantly used in continuous finishing applications of metal cutting due to their high hardness, excellent resistance to oxidation and high chemical stability. However, their application in interrupted cutting like milling are limited due to their brittle-like failure due to low fracture toughness. In this work, alternative binder systems such as Co-Ni and Ni are investigated to study their influence on the material properties followed by evaluating their performance in face milling of quench and tempered 42CrMo4 steels having a hardness of 35 HRC. The results show that as the concentration of Ni in the binder increases, the hardness (HV) decreases and the Palmqvist fracture toughness (K1C)... (More)
Ti (C, N) based cermet materials are predominantly used in continuous finishing applications of metal cutting due to their high hardness, excellent resistance to oxidation and high chemical stability. However, their application in interrupted cutting like milling are limited due to their brittle-like failure due to low fracture toughness. In this work, alternative binder systems such as Co-Ni and Ni are investigated to study their influence on the material properties followed by evaluating their performance in face milling of quench and tempered 42CrMo4 steels having a hardness of 35 HRC. The results show that as the concentration of Ni in the binder increases, the hardness (HV) decreases and the Palmqvist fracture toughness (K1C) increases. This trend is more pronounced in the binder containing pure Ni. Thus, Ni helps in transforming the nature of a brittle-like cermet with Co binder to a tougher cermet with Co-Ni and pure Ni binder. Up-milling tests with coolant revealed that as-sintered cermet with pure Co and Co-Ni binder performed similarly while pure Ni binder showed premature failure. CVD coated cermet in as-deposited state shows a substantial improvement in performance of the Co-Ni binder compared to pure Co binder while Ni binder show rapid flaking of coating causing premature failure. Formation of comb cracks and parallel cracks networks followed by adhesion and impaction of steel in the cracks is observed as the main wear mechanism that causes rapid block isolation of the geometry leading to tool catastrophic failure. However, CVD coated Co-Ni binder system showed less adhesion in the crack networks which is speculated to be the reason for its improved performance.
(Less)
- author
- Premkumar, Vikas B.K. LU ; Chalkiadakis, Evangelos ; M'Saoubi, Rachid LU and Bushlya, Volodymyr LU
- organization
- publishing date
- 2025-02-14
- type
- Contribution to journal
- publication status
- epub
- subject
- in
- Wear
- article number
- 205910
- publisher
- Elsevier
- external identifiers
-
- scopus:85218875063
- ISSN
- 0043-1648
- DOI
- 10.1016/j.wear.2025.205910
- language
- English
- LU publication?
- yes
- id
- 92fba20e-1f7e-4d5e-aeb4-4019d5b16f87
- date added to LUP
- 2025-03-10 10:08:24
- date last changed
- 2025-04-04 14:44:42
@article{92fba20e-1f7e-4d5e-aeb4-4019d5b16f87,
abstract = {{<p>Ti (C, N) based cermet materials are predominantly used in continuous finishing applications of metal cutting due to their high hardness, excellent resistance to oxidation and high chemical stability. However, their application in interrupted cutting like milling are limited due to their brittle-like failure due to low fracture toughness. In this work, alternative binder systems such as Co-Ni and Ni are investigated to study their influence on the material properties followed by evaluating their performance in face milling of quench and tempered 42CrMo4 steels having a hardness of 35 HRC. The results show that as the concentration of Ni in the binder increases, the hardness (HV) decreases and the Palmqvist fracture toughness (K1C) increases. This trend is more pronounced in the binder containing pure Ni. Thus, Ni helps in transforming the nature of a brittle-like cermet with Co binder to a tougher cermet with Co-Ni and pure Ni binder. Up-milling tests with coolant revealed that as-sintered cermet with pure Co and Co-Ni binder performed similarly while pure Ni binder showed premature failure. CVD coated cermet in as-deposited state shows a substantial improvement in performance of the Co-Ni binder compared to pure Co binder while Ni binder show rapid flaking of coating causing premature failure. Formation of comb cracks and parallel cracks networks followed by adhesion and impaction of steel in the cracks is observed as the main wear mechanism that causes rapid block isolation of the geometry leading to tool catastrophic failure. However, CVD coated Co-Ni binder system showed less adhesion in the crack networks which is speculated to be the reason for its improved performance.</p>}},
author = {{Premkumar, Vikas B.K. and Chalkiadakis, Evangelos and M'Saoubi, Rachid and Bushlya, Volodymyr}},
issn = {{0043-1648}},
language = {{eng}},
month = {{02}},
publisher = {{Elsevier}},
series = {{Wear}},
title = {{Influence of the design of Ti (C, N)-based cermets with alternative binders on their performance and wear in milling}},
url = {{http://dx.doi.org/10.1016/j.wear.2025.205910}},
doi = {{10.1016/j.wear.2025.205910}},
year = {{2025}},
}