EFFECT OF HEAT TREATMENT OF AL-7075-T6 INFLUENCE OF THERMO MECHANICAL EFFECT ON STRUCTURE AND PROPERTIES
Keywords:
Aluminium, Alloy 7075, Precipitation Hardening, Automotive PartsAbstract
Aluminium alloy 7075 is widely used for the automotive parts that work under the conditions of dynamic stress and cyclical loads. Automotive parts made from this alloy have to maintain high impact strength and hardness. High mechanical properties are achieved by thermo mechanical treatment when fibrous macrostructure and effect of precipitation hardening are obtained. This work deals with the investigation of changes of macrostructure and mechanical properties of alloy 7075 under various conditions: after quenching and artificial ageing; after plastic deformation, quenching and artificial ageing; after complete thermo-mechanical treatment. The results obtained will be used for the development of manufacturing technologies of the automotive parts.
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