Non-Standard T6 Heat Treatment of the Casting of the Combustion Engine Cylinder Head

Materials

Jan Jezierski¹  Jacek Pezda² 

[1] Department of Foundry Engineering, Silesian University of Technology, Ul. Towarowa 7, 44-100 Gliwice, Poland;Department of Manufacturing Technology and Automation, University of Bielsko-Biala, Willowa 2, 43-309 Bielsko-Biała, Poland;

关键词: cylinder heads;    heat treatment;    Brinell hardness;    automotive industry;   

DOI  :  10.3390/ma13184114

来源: DOAJ

【 摘 要 】

The introduction of new design solutions of cast components to the powertrain systems of passenger cars has resulted in an increased demand for optimization of mechanical properties obtained during heat treatment, assuring—at the same time—a suitable level of production capacity and limitation of manufacturing costs. In this paper, research results concerning non-standard T6 heat treatment of a combustion engine cylinder head made of AlSi7Cu3Mg alloy are presented. It has been confirmed that the optimal process of heat treatment of this component, taking into consideration the criterion of material hardness, involves solutioning at a temperature of 500 °C for 1 h, and then aging for 2 h at 175 °C. As a result, HBS10/1000/30 hardness in the range of 105–130 was obtained, which means an increase from 35% to 60% in comparison to the as-cast, depending on the position of the measurement and spheroidization of precipitations of eutectic silicon.

【 授权许可】

Unknown