Influence of Alloying Element and Ageing on Microstructure and Dry Sliding Wear Behaviour of Cu-Zn-xNi Alloy

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Authors

  • A. N. Santhosh
     Department of Mechanical Engineering, C Byregowda Institute of Technology, Kolar – 563101, Karnataka ,IN
  • S. Aprameyan
     Department of Mechanical Engineering, C Byregowda Institute of Technology, Kolar – 563101, Karnataka ,IN
  • Suresh Erannagari
     Department of Mechanical Engineering, BMSCE, Bengaluru – 560019, Karnataka ,IN
  • Vasantha Kumar
     Department of Mechanical Engineering, Bearys Institute of Technology, Mangalore – 574153, Karnataka ,IN

DOI:

https://doi.org/10.18311/jmmf/2022/31962

Keywords:

Brass, Casting, Friction, Microstructure, Microhardness, Wear

Abstract

In this paper, we look at how different nickel concentrations (4, 8, and 12 percent) affect the microstructure, microhardness, and dry sliding wear behaviour of a Cu-Zn-xNi alloy. The alloy was created using a casting technique at 1100°C and a heat treatment method that included solution treatment at 600°C and ageing at 450°C for four hours each. Microstructure studies were performed on the developed alloys using a scanning electron microscope (SEM). To investigate alloy indentation resistance, an ASTM E384 microhardness test was performed. Tribological properties such as friction and wear were investigated using a pin on disc tribometer and a dry sliding wear test according to the ASTM G99 standard. SEM studies revealed α-phase (copper) and solid solution of zinc in cast alloys, while aged alloys revealed a similar structure but with the addition of Cu2NiZn precipitates. The microhardness values improved as the Ni content and ageing increased. The decrease in secondary dendrite arm spacing with increasing Ni content and ageing was attributed to the improvement. The coefficient of friction decreased as the load increased, but increased as the sliding velocity increased. However, as loads and sliding velocities increased, so did the wear rate. For the majority of loads and sliding velocities, the worn surface demonstrated abrasion as the dominant wear mechanism.

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Published

2022-11-25

How to Cite

A. N. Santhosh, S. Aprameyan, Suresh Erannagari, & Vasantha Kumar. (2022). Influence of Alloying Element and Ageing on Microstructure and Dry Sliding Wear Behaviour of Cu-Zn-xNi Alloy. Journal of Mines, Metals and Fuels, 70(7), 380–394. https://doi.org/10.18311/jmmf/2022/31962

Issue

Volume 70, Issue 7, July 2022

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Articles

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Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

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