Speaker
Description
Aluminum alloys are widely used in various industries, especially automotive combustion engines. Due to their prolonged operation at high temperatures, these structures frequently experience creep and relaxation phenomena. Understanding and predicting these phenomena is essential to ensuring the long-term reliability and performance of the material. This study focuses on the rheological model for the relaxation and creep behavior of the EN AC-Al Si12CuNiMg alloy using the Standard Linear Solid (SLS) model. The standard linear solid model is a commonly used mathematical model for examining the stress relaxation and creep behaviors of materials. For this study, relaxation and creep tests were conducted on the EN AC-Al Si12CuNiMg alloy at various elevated temperatures of 150°C, 200°C, 250°C, 300°C, and 350°C. The experimental data obtained were then fitted with the Standard Linear Solid (SLS) Model. The SLS model parameters were then determined from the obtained experimental data. The effect of temperatures on relaxation and creep behavior and the SLS model parameters were analyzed. In addition, the effect of the initial stress level on relaxation and creep behavior and its model parameters were also investigated. The results showed that the relaxation and creep behaviors of the EN AC-Al Si12CuNiMg alloy were significantly affected by temperature. Relaxation and creep rates increase with temperature. Furthermore, the SLS model parameters also varied with temperature. Additionally, the test results showed that relaxation and creep behavior were affected by the initial stress level. Higher relaxation and creep rates were obtained from higher initial stress levels.
| Conference Topic Areas | Track3: Computational Mechanics and Structural Integrity |
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