Microstructure and Properties of 0.2mm Thick Sheet Titanium Alloy by Micro-Laser Welding

Abstract:

0.2mm thick titanium alloy sheet was butt-welded using micro impulse laser, influnce of the different processing parameter on the surface and cross-section morphology of welded joint was studied , testing the mechanical properties of joints. The result show that argon as a shielding gas, 0.2mm thick titanium alloy to the laser as heat source can be successful butt welding with process parameters of the pulse power 8.8W, pulse width 2.9ms, pulse frequency 7.0HZ, and forming a good welded appearance, the tensile strength and microhardness of welded joints was higher than the base metal. By the needle-like martensite α 'phase composition of the basket-like structure located in the center of the weld.

• Periodical: Advanced Materials Research (Volumes 391-392)
• Pages: 90-94
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.391-392.90
• Online since: December 2011
• Authors: Liang Yu, Yu Hua Chen, Wei Huai Gong
• Keywords: Microlaser Welding, Microstructure, Property Analysis, Titanium Alloy

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