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<p>An aluminum alloy AA1070 reinforced with basalt fibers in the amount of 5 wt.% has been investigated. The composite was produced by casting in a die with the melt processed with a combination of mechanical stirring and ultrasonic and vibration treatments. An alloy without basalt fibers was also obtained under similar conditions. It was found that the application of melt treatments did not lead to a significant change in the mechanical properties of the unreinforced alloy. However, after the introduction of basalt fibers using the combination of melt treatments, the yield strength increased by 37% and the tensile strength increased by 34%, while the elongation was retained at a high level of 40% in comparison with the reference alloy AA1070 that underwent similar melt processing. The average grain size of the materials (reference alloy and composite) decreased from 749&#xa0;<i>μ</i>m to 451&#xa0;<i>μ</i>m upon introduction of basalt fibers, while the electrical conductivity of melt-processed AA1070 decreased from 40% IACS to 38.5% IACS.</p>

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Microstructure, Mechanical, and Electrical Properties of AA1070–Basalt Fibers Composite

  • 期刊论文

  • 发表日期：

    2026年6月18日

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  • Vladimir D. Valikhov,
  • Irina L. Sinkina,
  • Anton P. Khrustalyov,
  • Alexander B. Vorozhtsov

摘要

An aluminum alloy AA1070 reinforced with basalt fibers in the amount of 5 wt.% has been investigated. The composite was produced by casting in a die with the melt processed with a combination of mechanical stirring and ultrasonic and vibration treatments. An alloy without basalt fibers was also obtained under similar conditions. It was found that the application of melt treatments did not lead to a significant change in the mechanical properties of the unreinforced alloy. However, after the introduction of basalt fibers using the combination of melt treatments, the yield strength increased by 37% and the tensile strength increased by 34%, while the elongation was retained at a high level of 40% in comparison with the reference alloy AA1070 that underwent similar melt processing. The average grain size of the materials (reference alloy and composite) decreased from 749 μm to 451 μm upon introduction of basalt fibers, while the electrical conductivity of melt-processed AA1070 decreased from 40% IACS to 38.5% IACS.