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- Title
Characterization of Complex Concentrated Alloys and Their Potential in Car Brake Manufacturing.
- Authors
Anasiei, Ioana; Mitrica, Dumitru; Badea, Ioana-Cristina; Șerban, Beatrice-Adriana; Trapp, Johannes; Storz, Andreas; Carcea, Ioan; Olaru, Mihai Tudor; Burada, Marian; Constantin, Nicolae; Matei, Alexandru Cristian; Popescu, Ana-Maria Julieta; Ghiță, Mihai
- Abstract
The paper studies new materials for brake disks used in car manufacturing. The materials used in the manufacturing of the brake disc must adapt and correlate with the challenges of current society. There is a tremendous interest in the development of a material that has high strength, good heat transfer, corrosion resistance and low density, in order to withstand high-breaking forces, high heat and various adverse environment. Low-density materials improve fuel efficiency and environmental impact. Complex concentrated alloys (CCA) are metallic element mixtures with multi-principal elements, which can respond promisingly to this challenge with their variety of properties. Several compositions were studied through thermodynamic criteria calculations (entropy of mixing, enthalpy of mixing, lambda coefficient, etc.) and CALPHAD modeling, in order to determine appropriate structures. The selected compositions were obtained in an induction furnace with a protective atmosphere and then subjected to an annealing process. Alloy samples presented uniform phase distribution, a high-melting temperature (over 1000 °C), high hardness (1000–1400 HV), good corrosion resistance in 3.5 wt.% NaCl solution (under 0.2 mm/year) and a low density (under 6 g/cm3).
- Subjects
METALS; ALLOYS; CORROSION resistance; ENERGY consumption; DISC brakes; FRICTION materials
- Publication
Materials (1996-1944), 2023, Vol 16, Issue 14, p5067
- ISSN
1996-1944
- Publication type
Article
- DOI
10.3390/ma16145067