Abstract
Based on the investigated microstructure of different zones in the annealed automatic gas tungsten arc weld joint of TA16 and TC4 titanium alloys, the mechanical property of them was assessed under fatigue crack growth rate tests. For evaluation of fatigue crack growth rate, three points bending specimens were used. The correlation between the range of stress intensity factor and crack growth rate was determined in different zones of the annealed weld joint. Fatigue crack growth rates were obviously different in different zones of weld joint of dissimilar titanium alloys, due to their different microstructures. Scanning electron microscope examinations were conducted on the fracture surface in order to determine the relevant fracture mechanisms and crack growth mechanisms with respect to the details of microstructure.
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Funded in Part by the Grant from Technology and Industry for National Defense, China (No. AXXD1818)
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Shao, L., Wu, S., Peng, W. et al. Fatigue Crack Growth Behavior of Different Zones in an Annealed Automatic Gas Tungsten Arc Weld Joint of TA16 and TC4 Titanium Alloys. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 35, 1090–1097 (2020). https://doi.org/10.1007/s11595-020-2359-5
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DOI: https://doi.org/10.1007/s11595-020-2359-5