<p>The development of new alloys with shape memory effects is crucial for advancing technological device applications across various fields. Copper-based alloys are known to make a significant contribution in this regard. In this context, the role of Zr on the phase stability in a CuAlMnAg alloy initially subjected to quenching was investigated. Cu-9Al-10Mn-3Ag-xZr alloy with additions of 1, 3, and 5wt.%Zr was prepared and studied using various experimental techniques. The results indicated that increasing the Zr content reduced the grain size of the <i>β</i>₁ phase, increased the volumetric fraction of the <i>β</i>₃ (L2₁) phase, and decreased the amount of <i>β</i>₁ (D0₃). The reduction in the relative fraction of the <i>β</i>₁ phase was also associated with the formation of Cu₅Zr and CuZr phases during rapid cooling. Additionally, the presence of Zr reduced the bainite fraction formed from heating of as-quenched alloys and enhanced the thermal stability of the <i>β</i>-type phases.</p>