Influence of Copper addition on Mechanical Behavior of Al-Ca Alloy

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The Al-Ca-Cu alloys containing varying amount of Cu are used to study the influence of Cu addition on their deformation behavior at varying strain rate (0.001/s, 0.01/s, 0.1/s, 1/s).The material is prepared using stir casting technique The yield stress, flow stress and elastic limit are measured from the true stress-strain graph .The Strain Rate sensitivity and strain hardening exponent are also determined for each material at different strain rate. The Strain Rate Sensitivity of this alloy is very low. These values strongly demonstrate that compressive deformation of Al-Ca-Cu alloys almost independent to the strain rate at room temperature deformation.

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