The effect of Germanium addition on mechanical properties& microstructure of Cu-Al-Ni shape memory alloy (original) (raw)

This paper aims to study the effect of Ge addition in different percentages (0.3%wt ,1%wt, 3%wt) on the micro structure and mechanical properties of Cu-14wt%Al-4.5wt%Ni shape memory alloy which prepared by casting method in vacuum induction furnace. Many tests and inspections such as optical and SEM examinations , DSC Measurement ,XRD inspection , compression and Vickers hardness tests were investigated. The results show that there is an increase in the transformation temperatures, shape memory limits and decrease in hardness and increase in Young Modulus Also it was found that the increase of Ge content to 3%wt Ge gave better properties due to the formation of martensitic phase and Ge particles distribution in martensite matrix of SMA.