Cracking of Ti2AlNb-based alloy after laser beam welding
نویسندگان
چکیده
Abstract Crack formation process in the Ti-23Al-23Nb-1.4V-0.8Zr-0.4Mo-0.4Si (at.%) alloy based on orthorhombic titanium aluminide (Ti 2 AlNb), especially weld zone (WZ), heat-affected (HAZ), and base metal (BM), during laser beam welding (LBW) at room temperature was considered. It determined that crack spread WZ throughout crystallites of ?-phase. In HAZ, cracks globular ?-phase crystals body along edges ? - O-phases. The cracking stopped BM due to a mechanism similar shear ligament toughening. Cracking can be effectively suppressed by increasing LBW temperature.
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ژورنال
عنوان ژورنال: IOP conference series
سال: 2021
ISSN: ['1757-899X', '1757-8981']
DOI: https://doi.org/10.1088/1757-899x/1014/1/012035