Elevated Temperature Deformation Behavior of Novel NiTiAg Shape Memory Alloys: A Comparison Between Various Constitutive Models and Experimental Flow Curves

Medical, engineering and defense applications require Ni-Ti shape memory alloys. Altering equi-atomic Ni-Ti alloy has been explored for years. Hot/cold working, thermomechanical treatments and ternary/quaternary alloying improve the properties of Ni-Ti shape memory alloys. Tertiary alloys perform better compare to binary NiTi alloy. Ag improves binary Ni-Ti SMA corrosion and antibacterial properties. NiTiAg alloy’s high-temperature deformation helps commercialize it through processing. Shape memory alloy processing and production research influences microstructure, corrosion resistance, biocompatibility and shape memory. Hot deformation properties of NiTiAg alloy is reported in this work. Kinetic analysis is performed to determine the activation energy. Different models predicted NiTiAg alloy plastic flow behavior, but the artificial neural network model proved to be the best. Detailed results are discussed and presented in the paper.