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<p>This study investigates the influence of various heat treatment routes on the bending strength and toughness of Al 6061 alloy. Five samples were subjected to different thermal conditions, including rapid water quenching, slow furnace cooling, and aging treatments. Mechanical testing, including three-point bending was conducted to evaluate the effects of these treatments. Microstructural analysis revealed significant changes in grain morphology and precipitate distribution, with the T6-like condition (solution treated, quenched, and aged) showing the highest strength due to fine, uniformly distributed Mg₂Si precipitates. In contrast, furnace-cooled samples exhibited coarser precipitates and reduced mechanical performance. The study establishes a clear correlation between heat treatment parameters, microstructural evolution, and mechanical behavior, highlighting the effectiveness of controlled aging after rapid quenching in enhancing alloy performance.</p>

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The bending strength and microstructure of aluminium alloy after processing through rapid/slow cooling followed by aging

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年9月30日

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  • Tejas Kukreja,
  • Puneet Sharma,
  • Bhavya Bhargava,
  • Saurabh Dewangan,
  • Rajeev Kumar,
  • Piush Raj,
  • Anmol Bhatia

摘要

This study investigates the influence of various heat treatment routes on the bending strength and toughness of Al 6061 alloy. Five samples were subjected to different thermal conditions, including rapid water quenching, slow furnace cooling, and aging treatments. Mechanical testing, including three-point bending was conducted to evaluate the effects of these treatments. Microstructural analysis revealed significant changes in grain morphology and precipitate distribution, with the T6-like condition (solution treated, quenched, and aged) showing the highest strength due to fine, uniformly distributed Mg₂Si precipitates. In contrast, furnace-cooled samples exhibited coarser precipitates and reduced mechanical performance. The study establishes a clear correlation between heat treatment parameters, microstructural evolution, and mechanical behavior, highlighting the effectiveness of controlled aging after rapid quenching in enhancing alloy performance.