Effects of Ga, Nb, V, Zr, and Cr on the crystal structures and thermal behavior of CuAlMn shape memory alloys

Abstract

CuAlMn alloys are cheaper and more promising alloy types compared to NiTi alloys. In this study, based on CuAlMn shape memory alloy, thermodynamic and structural characteristics of some new alloys containing four elements were investigated in detail. In this study, five new quaternary shape memory alloys, each containing a CuAlMn base alloy and a different fourth additive element (Ga, Nb, V, Zr, and Cr), were produced. The properties of the obtained alloys were characterized using a series of analysis methods such as X-ray diffraction (XRD), optical microscopy, differential scanning calorimetry (DSC), and differential thermal analysis (DTA). The results showed the effects of different elements on the crystal structures of the alloys and how different elements could change the thermal behavior of the alloys.

Investigations on the interaction of laser parameters for efficient microdrilling of NiTiV smart alloy system

“…These attributes also position them as a alloys low phase transition temperature makes it hard to meet the high-temperature application needs. On the other hand, adding a third element may significantly improves the phase transition temperature [5,6]. Despite its exceptional capabilities, high brittleness and low fracture toughness at room temperature pose a significant problem in traditional machining.…”

“…From that inference, higher level laser power, intermediate laser frequency, higher cutting speed, and minimum nozzle distance developed the maximum MRR on the drilled Ni 50 Ti 48 V 2 SMA. The regression equation that was constructed for the MRR based on the mathematical model is displayed in equation(5).…”