Laser Welding of Shape Memory Alloy

Abstract

The experimental study on laser welding of shape memory alloy (SMA) was conducted. The SMA and stainless steel wires of diameter 0.5 mm were used as the specimens to be welded. Two wires were set in a jig system, which holds wires in a semi-circular contour shape, and a pulsed YAG laser beam was irradiated along the borderline of the wires. It was found that laser welding can apply shape-memory function on the welded specime.