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Effect of Heat Treatment on the Hardness and Electrical Connectivity of an Aluminum Composite Reinforced with Al2O3 Nanoparticles

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Metal Science and Heat Treatment Aims and scope

The effect of heat treatment modes on the microstructure, microhardness and electrical conductivity of an aluminum metal matrix composite (MMC) reinforced with Al2O3 nanoparticles in an amount of 2.5 wt.% is studied. The MMC is treated by quenching from 510, 530 or 550°C and subsequent artificial aging at 140, 160, 180, 200 or 220°C. The cast composite has a Vickers microhardness of 36 HV and an electrical conductivity of 45% IACS. The heat treatment raises the hardness and the conductivity of the composite. Quenching from 530°C and aging at 200°C produce the highest microhardness (46 HV ); quenching from 530°C and aging at 180°C produce the highest conductivity (50% IACS).

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Authors and Affiliations

  1. Department of Aeronautical Engineering, Military Institute of Science and Technology, Mirpur Cantonment, Dhaka, Bangladesh

    Md Jalal Uddin Rumi

  2. Bangabandhu Sheikh Mujibur Rahman Maritime University, Dhaka, Bangladesh

    Muhammad Muzibur Rahman

Authors
  1. Md Jalal Uddin Rumi
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  2. Muhammad Muzibur Rahman
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Correspondence to Md Jalal Uddin Rumi.

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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 7, pp. 59 – 63, July, 2023.

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Rumi, M.J.U., Rahman, M.M. Effect of Heat Treatment on the Hardness and Electrical Connectivity of an Aluminum Composite Reinforced with Al2O3 Nanoparticles. Met Sci Heat Treat 65, 450–453 (2023). https://doi.org/10.1007/s11041-023-00953-8

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