INVESTIGATION OF THERMO MECHANICAL （调查的热机械）.pdf

INVESTIGATION OF THERMO MECHANICAL EFFECT ON STRUCTURE AND PROPERTIES OF ALUMINIUM ALLOY 6082 ИССЛЕДОВАНИЕ ТЕРМОМЕХАНИЧЕСКОГО ЭФФЕКТА НА СТРУКТУРУ И СВОЙСТВА АЛЮМИНИЕВОГО СПЛАВА 6082 1 1 2 1 Assoc. Prof. Dr. Zvinys J. , Assoc. Prof. Dr. Kandrotaite Janutiene R. , Dr. Meskys J. , Assoc. Prof. Dr. Juzenas K. 1 2 Kaunas University of Technology , Company “Precise Mechanical Technologies” , Lithuania Abstract : Aluminium alloy 6082 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 6082 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. KEYWORDS: ALUMINIUM, ALLOY 6082, PRECIPITATION HARDENING, AUTOMOTIVE PARTS 1. Introduction may become a cornerstone on purpose to obtain eligible mechanical properties of the part. Some of the materials used for hot