EXPERIMENTAL INVESTIGATION ON MECHANICAL AND SELF-HEALING CHARACTERISTICS OF AL2024 BASE COMPOSITE REINFORCE WITH PbSn AND NiTi
Keywords:
Al2024, Self-Healing, Mechanical Properties Low Melting Point Alloy, Shape Memory AlloyAbstract
Self-healing materials have garnered significant interest in various engineering applications due to their potential to mitigate damage and prolong the lifespan of structural components. This experimental study focuses on assessing the mechanical and self-healing characteristics of a composite material composed of Al2024 and PbSn. The Al2024 alloy provides strength and durability, while the PbSn and NiTi components contribute unique properties related to self-healing. The investigation involves the fabrication of the composite material through a carefully designed process, followed by a thorough characterization of its microstructural and mechanical properties. Various self-healing mechanisms inherent to PbSn, a low melting point alloy, and NiTi, a shape memory alloy, through thermal-induced recovery, are analyzed to understand their contribution to the overall healing potential of the composite. To induce damage, the composite specimens are subjected to controlled mechanical stresses and environmental conditions. The subsequent self-healing response is monitored through non-destructive testing techniques, including microscopy and mechanical testing. The results show that the mechanical properties of Al2024 are reduced when reinforced with PbSn and NiTi, but the low melting point PbSn reinforcement shows fewer effects compared to the shape memory alloy, except for impact properties.
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