Cyclic Behavior of an Al-Si-Cu Alloy under Thermo-Mechanical Loading

• Published in: SAE International journal of materials and manufacturing Vol. 7; no. 3; pp. 602 - 608
• Main Authors: Mao, Jianghui, Engler-Pinto, Carlos, Su, Xuming, Kenningley, Scott
• Format: Journal Article
• Language: English
• Published: Warrendale SAE International 01.06.2014; SAE International, a Pennsylvania Not-for Profit
• Subjects: Alloys; Aluminum base alloys; Automotive engines; Copper; Copper base alloys; Deformation; Deformation effects; Engine components; Engines; High temperature; Hysteresis; Kinematics; Load distribution; Modelling; Moduli of elasticity; Room temperature; Silicon; Strain; Strain rate; Temperature; Temperature dependence
• ISSN: 1946-3979; 1946-3987; 1946-3987
• DOI: 10.4271/2014-01-1012

In this paper, the cyclic deformation behavior of an Al-Si-Cu alloy is studied under strain-controlled thermo-mechanical loading. Tests are carried out at temperatures from 20 °C to 440 °C. The effect of strain rate, hold time at temperature and loading sequence are investigated at each temperature. The results show that temperature has a significant effect on the cyclic deformation of Al-Si-Cu alloys. With increasing temperature, the effect of strain rate and hold time become more significant, while load sequence effects remain negligible within the investigated temperature range. Thus, an elastoviscoplastic model is required for modeling the alloy's behavior at high temperature. This study provides an insight into the necessary information required for modeling of automotive engine components operating at elevated temperature.