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Syntactic Aluminum Foam from Recycled Sawing Chips

  • Aluminum: Recycling and Carbon / Environmental Footprint
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Abstract

A method for the reuse of aluminum (alloy 5754) sawing chips as a starting material for manufacturing aluminum matrix syntactic foams by powder metallurgy is described. In the tested samples, spherical Ni-superalloy hollow particles were used to increase the closed porosity of specimens up to 50 wt.%. Spark plasma sintering was used to consolidate the specimens. Only the sample with 30% hollow particles showed a clear maximum corresponding to a compression strength of 130 MPa. For all the samples, the plateau stress was over 120 MPa. The densification strain was over 40%, reaching 61% for the sample containing 30% hollow particles. All the samples showed high energy absorption capabilities and good absorption efficiency.

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Acknowledgement

This research was partially supported by the project 21 PFE in the frame of the programme PDI-PFE-CDI 2018.

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Authors and Affiliations

  1. Department of Materials Science and Technology, Technical University of Cluj-Napoca, 103-105 Muncii Ave., 400641, Cluj-Napoca, Romania

    Gy. Thalmaier, N. A. Sechel & I. Vida-Simiti

  2. Academy of Technical Sciences, 26 Dacia Boulevard, Bucharest, Romania

    I. Vida-Simiti

Authors
  1. Gy. Thalmaier
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  2. N. A. Sechel
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  3. I. Vida-Simiti
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Correspondence to Gy. Thalmaier.

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Thalmaier, G., Sechel, N.A. & Vida-Simiti, I. Syntactic Aluminum Foam from Recycled Sawing Chips. JOM 72, 3377–3382 (2020). https://doi.org/10.1007/s11837-020-04282-6

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  • DOI: https://doi.org/10.1007/s11837-020-04282-6

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