How does heat affect the properties of aluminum?

Heat significantly affects the properties of aluminum. As temperature increases, aluminum's electrical and thermal conductivity decrease, although it remains a good conductor. Its strength and hardness also decrease with rising temperature, which can lead to reduced structural integrity in high-temperature applications. Thermal expansion occurs, causing the metal to lengthen and potentially deform. Aluminum's malleability and ductility increase with heat, making it easier to shape and form. However, prolonged exposure to high temperatures can cause oxidation and corrosion. The specific heat treatment, such as annealing or quenching, can also alter aluminum's microstructure, impacting its mechanical properties.