Effect of Tİ on alloys Ni55Fe18Ga27

In this study, the effect of Ti element on the morphological, thermal mechanical and magnetic properties of Ni-37.79Ga-14.46Fe alloys were investigated. For the physical characterization of alloys; Scanning electron microscopy (SEM), Vickers micro hardness, differintial scanning calorimetry (DSC), vibrating sample magnetometer (VSM) and mösbauer spectrometry were used. According to DSC results, no phase transition was observed in the 0-600 οC range. It was determined that the vickers hardness decreased with the increase of Ti amount. The Mössbauer spectra of the alloys composed of 2 doublet and 1 sextet. Acording to Mössbauer results, it was determined that the isomer shift values did not change with the increase of Ti amount, howewer, the cubic symetry of the nucleus is disordered and amount of paramagnetic phase increased with increased Ti amount. It was determined by compression tests that the mechanical properties decreased with the increase of Ti. The alloy with the greatest ductility was determined as Ni-15.29Fe-37.26Ga-0.53Ti. It was determined by magnetization curves obtained at room temperature that the Ms, Mr and Hc values decreased with the increase of Ti amount in the alloys.