Laser Beam Welding of ATI 425~? Alloy was performed on 2.5 mm thick butt joints. This new alloy could be used in place of standard Ti-6Al-4V for a variety of lower-cost structural solutions.Demonstration of its fusion weldability with laser welding is of particular interest because it is a near-net- shape process, capable of high welding speeds, which will further enable lower cost manufacturing options. It was found that ATI 425~? Alloy could be successfully welded using a fiber laser at speeds over 3 m/min. Microstructural, microhardness and tensile property evaluations were performed on the resulting welds. It was found that there was a 15% hardness increase in the weld and the strength of the joints was within 2% of base metal properties.
The Boeing Company, P.O. Box 3707 MC 5K-63, Seattle WA USA, 98124-2207 University of Washington, Dept. of Mechanical Eng. Box 352600, Seattle WA USA 98195
The Boeing Company, P.O. Box 3707 MC 5K-63, Seattle WA USA, 98124-2207
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