The mechanical properties of gas tungsten arc welding (GTAW) are simulated predicted by multilayer forward neural network model for titanium alloys. The input parameters of the neural network are alloy compositions
cooling rate and heat treatment conditions
and the output parameters of the neural network are five important mechanical properties of the weld metal of titanium alloys
namely ultimate tensile strength
elongation
reduction of area
yield strength and hardness. The effects of aluminum and vanadium on mechanical properties were investigated in detail.