Mechanical properties of copper-bearing aluminium cast alloys over a wide temperature range

This is the authors' abstract. We don't add key points for this paper.

Aluminium alloys are used as replacements for heavier materials due to their strength and density. The regulations to reduce CO2 emissions have promoted the development of higher-power output engines, and heat-treated aluminium-copper is designed for such engines. In addition, these alloys can be used as toolings for plastics. Hence, there is a need to evaluate the effect that the microstructure exerts on the mechanical properties of Al-Cu alloys over a wide temperature range. Al-Cu alloys were cast, varying their composition, and tested in tension at room temperature and within the 150 to 300°C range after maintaining them for up to 200 h at the testing temperature. It was found that the yield strength of some alloys was above 200 MPa after 200 h at 200°C. Therefore, it would be possible to use such alloys for toolings and combustion engines with adequate processing.