Invistigation of the effect of heating rate in non-isothermal aging heat treatment on the microstructure and mechanical properties of in-situ aluminum-nickel aluminide composite

Articles in Press

Document Type : Original Research Article

Authors

1 -

2 Department of Materials and Industrial Engineering, Babol Noshirvani University of Technology, Shariati Avenue, Babol, Iran

3 Department of Materials Engineering, Babol Noshirvani University of Technology

10.22034/frj.2023.379722.1172

Abstract

In this research, the effect of heating rate on non-isothermal aging behavior of AA2024 aluminum alloy matrix composite reinforced with nickel aluminide has been studied. Nickel aluminide was created in-situ in the AA2024 aluminum alloy matrix and as a result of adding 4.5 wt.% of nickel during composite fabrication. The results showed that the addition of nickel reduces the precipitation ability of the AA2024 aluminum alloy during non-isothermal heat treatment despite the formation of nickel aluminide. Also, with the increase of the heating rate, the amount of S-Al2CuMg precipitates formed in the microstructure decreases during non-isothermal aging. By increasing the heating rate, the maximum hardness is reduced during aging heat treatment and is obtained at higher temperatures. Non-isothermal aging of AA2024 aluminum alloy matrix composite reinforced with nickel aluminide at a heating rate of 5°C/min led to an increase in hardness and ultimate tensile strength by 17 and 22%, respectively, compared to AA2024 aluminum alloy matrix.

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Articles in Press, Accepted Manuscript
Available Online from 14 July 2023

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History

  • Receive Date: 05 January 2023
  • Revise Date: 12 July 2023
  • Accept Date: 14 July 2023

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