Micro abrasion in Fe-Cr-C-Nb alloys samples: The role of niobium
1 REDEMAT – Rede Temática em Engenharia de Materiais – Escola de Minas - UFOP - Ouro Preto - MG – Brazil
2 Applied Tribology Laboratory – Gorceix Foundation – Ouro Preto – MG – Brazil.
3
Rzeszow University of Technology - Faculty of Mechanical Engineering and Aeronautics; Department of Computer Science – Poland.
Rzeszow University of Technology - Faculty of Mechanical Engineering and Aeronautics; Department of Computer Science – Poland.Research Article
World Journal of Advanced Engineering Technology and Sciences, 2024, 13(01), 1000–1011.
Article DOI: 10.30574/wjaets.2024.13.1.0518
Publication history:
Received on 14 September 2024; revised on 21 October 2024; accepted on 23 October 2024
Abstract:
This paper addresses to analyze the role played by Niobium (Nb) in the microstructure of Fe-Cr-C alloys being tested in micro abrasion conditions (ball abrasion test). Three alloys with differences in Cr content and one of them with 5% Nb have been prepared as weld tracks under Fe-C substrate. The resulting microstructures contain carbides embedding in a metallic matrix (MMC). Significant changes in mechanical properties are expected depending on the morphology, size and distribution of carbides. Results pointed out to an improvement in wear resistance of Fe-Cr-C-Nb alloy although it showed lower values of hardness and volume fraction of carbides in comparison to the other alloys. The coefficient of friction was also affected by Nb addition. Such results evidence the possibility of using such alloy in applications that require high performance in wear resistance as mining and agriculture equipment.
Keywords:
Niobium; Chromium; Wear; Ball Abrasion Test; Friction Coefficient.
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