Indexed In Scopus
  Scopus ID: 21100926589

Tribological Behavior of High-strength AA7068 Alloy: Effect of Artificial Aging Temperature

Ashish Kumar Singh , Sanjay Soni, Ravindra Singh Rana, Akshay Kumar, Raj Kumar Singh, Girish Chandra and Shashank Kumar Srivastava

Abstract

An enhanced version of stir casting route was used to develop AA7068 alloy. The dry sliding wear and friction behavior of the alloy was studied using pin-on disc wear tester in as-cast and T6 heat-treated (varying aging temperatures i.e., 180 °C, 195 °C, and 210 °C) conditions under varying sliding distance (0 – 5000 m with an interval of 1000 m) and at constant sliding velocity of 2.0 m/s and applied pressure of 1.0 MPa. It was reported that the wear rate was found to be increasing with cumulative sliding distance, irrespective of the condition of the material. The coefficient of friction varied in a fluctuating manner in all cases. The wear surfaces generated during wear test were also analyzed through scanning electron microscope (SEM) to predict the dominating wear mechanisms/modes. The multidirectional cracking, scratch marks and parallel lips in the surface were revealed as prime wear modes in the alloy.

Published on: May 07, 2023
doi: 10.17756/nwj.2023-s1-100
Citation: Singh AK, Soni S, Rana RS, Kumar A, Singh RK, et al. 2023. Tribological Behavior of High-strength AA7068 Alloy: Effect of Artificial Aging Temperature. NanoWorld J 9(S1): S518-S522.

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