Evaluation of the Friction Coefficient for TRIP1000 Steel under Different Conditions of Lubrication, Contact Pressure, Sliding Speed and Working Temperature
Abstract
:1. Introduction
2. Materials and Methods
2.1. Sheet Material
2.2. Pin-on-Disk Test
3. Results and Discussions
Topological Profile of Samples
4. Conclusions
- Lubrication did not act to greatly decrease the friction coefficient, and, for the grease, there was an increase in the friction coefficient, mainly for a low speed.
- Likewise, speed and contact pressure did not act to greatly reduce friction, but some speeds and pressures helped to stabilize the friction stick–slip.
- The increase in temperature favoured the appearance of the stick–slip mechanism due to the increase in material adhesion, which can increase tool wear and galling. This highlights the need for a lubricant that, in addition to reducing tool wear, acts as a coolant and thus reduces material adhesion.
- Measuring the coefficient of friction with these process variables is very important so that the friction performance is understood and applied in numerical simulations of the final parts more accurately.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Element | C | Mn | Si | Al | Ti + Nb | P | S |
---|---|---|---|---|---|---|---|
Content (wt%) | <0.30 | <2.50 | <2.00 | <2.00 | <0.10 | <0.04 | <0.01 |
Rolling Direction | Yield Strength (MPa) | UTS (MPa) | Elunifor. (%) | Eltotal (%) | n6%-ue | r10% |
---|---|---|---|---|---|---|
90° | 746 | 1064 | 14.2 | 18.3 | 0.167 | 1.047 |
45° | 726 | 1054 | 15.2 | 19.3 | 0.176 | 0.840 |
0° | 724 | 1056 | 16.1 | 20.6 | 0.180 | 0.802 |
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Folle, L.F.; Caetano dos Santos Silva, B.; Sousa de Carvalho, M.; Zamorano, L.G.S.; Coelho, R.S. Evaluation of the Friction Coefficient for TRIP1000 Steel under Different Conditions of Lubrication, Contact Pressure, Sliding Speed and Working Temperature. Metals 2022, 12, 1299. https://doi.org/10.3390/met12081299
Folle LF, Caetano dos Santos Silva B, Sousa de Carvalho M, Zamorano LGS, Coelho RS. Evaluation of the Friction Coefficient for TRIP1000 Steel under Different Conditions of Lubrication, Contact Pressure, Sliding Speed and Working Temperature. Metals. 2022; 12(8):1299. https://doi.org/10.3390/met12081299
Chicago/Turabian StyleFolle, Luis Fernando, Bruno Caetano dos Santos Silva, Marcelo Sousa de Carvalho, Luiz Gustavo Souza Zamorano, and Rodrigo Santiago Coelho. 2022. "Evaluation of the Friction Coefficient for TRIP1000 Steel under Different Conditions of Lubrication, Contact Pressure, Sliding Speed and Working Temperature" Metals 12, no. 8: 1299. https://doi.org/10.3390/met12081299