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Mechanical properties, wear resistance and impact resistance of a high-alloy chromium cast iron used in the fabrication of grinding balls have been studied. A rank of tempering heat treatments under several temperatures 500°C, 525°C, 550°C and 575°C was performed after austenitized at 1050°C. The Scanning Electron Microscope (SEM) and X-ray Diffraction (XRD) techniques have been used to characterize the microstructures and identify the phases. The wear balls tests were conducted in a rotating drum with a velocity 0.5 r/s. The tribological tests were carried out by evaluated a weight loss as function time. The measurement of the rebound resilience was determined by Charpy impact tests. The results of XRD showed the presence of the martensite, carbides type M7C3 and M2C for all tempering heat treated. The hardness of the sample increased after the tempering and reach nearly 65 HRC at 1050°C. In another hand, it decreased after the tempering treatment it could be explained by precipitation of the carbides type M2C.
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Mechanical properties, wear resistance and impact resistance of a high-alloy chromium cast iron used in the fabrication of grinding balls have been studied. A rank of tempering heat treatments under several temperatures 500°C, 525°C, 550°C and 575°C was performed after austenitized at 1050°C. The Scanning Electron Microscope (SEM) and X-ray Diffraction (XRD) techniques have been used to characterize the microstructures and identify the phases. The wear balls tests were conducted in a rotating drum with a velocity 0.5 r/s. The tribological tests were carried out by evaluated a weight loss as function time. The measurement of the rebound resilience was determined by Charpy impact tests. The results of XRD showed the presence of the martensite, carbides type M7C3 and M2C for all tempering heat treated. The hardness of the sample increased after the tempering and reach nearly 65 HRC at 1050°C. In another hand, it decreased after the tempering treatment it could be explained by precipitation of the carbides type M2C.

Investigation on the Influence of Tempering on Microstructure and Wear Properties of High Alloy Chromium Cast Iron

Laboratory of Mechanics, Materials and Energetic (L2ME)

Faculty of Technology, University of Bejaia

Research Laboratory of Industrial Technologies

Department of Mechanical Engineering. Faculty of Applied Sciences, Ibn Khaldoun University

Laboratory of Processes for Materials, Energy, Water and Environment. Faculty of Science and Technology

Advances in Materials Science

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mechanical properties, wear resistance and impact resistance of a high-alloy chromium cast iron used in the fabrication of grinding balls have been studied. A...

Investigation on the Influence of Tempering on Microstructure and Wear Properties of High Alloy Chromium Cast Iron

Online veröffentlicht: 01. Juli 2021

Seitenbereich: 65 - 76

DOI: https://doi.org/10.2478/adms-2021-0011

Schlüsselwörter
High-alloy chromium cast iron, microstructure, wear, resilience

© 2021 Rassim Younes et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Investigation on the Influence of Tempering on Microstructure and Wear Properties of High Alloy Chromium Cast Iron

Online veröffentlicht: 01. Juli 2021

Seitenbereich: 65 - 76

DOI: https://doi.org/10.2478/adms-2021-0011

SchlüsselwörterHigh-alloy chromium cast iron, microstructure, wear, resilience

© 2021 Rassim Younes et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Schlüsselwörter
High-alloy chromium cast iron, microstructure, wear, resilience