Fatigue Crack Growth Behavior of Different Zones in an Annealed Automatic Gas Tungsten Arc Weld Joint of TA16 and TC4 Titanium Alloys

Shao, Liping; Wu, Sujuan; Peng, Wenya; Datye, Amit; Ju, Hongbo; Liu, Ying

doi:10.1007/s11595-020-2359-5

Cited by 3 publications

(1 citation statement)

References 35 publications

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“…Among known metals, pure titanium and titanium alloy have unique characteristics, such as high specific strength, low density, and good corrosion resistance, and they are emerging structural and functional materials [1,2]. Pure titanium and titanium alloy are widely used in fields such as aerospace engineering [3] for reducing structural weight and improving thrust–weight ratio and in fields such as shipbuilding [4], petroleum [5] and chemical industries [6], automobiles [7], and medicine [8,9]. However, they still have some inherent defects, such as poor wear resistance and poor thermal conductivity [10,11], affecting the safety and reliability of their workpiece.…”

Section: Introductionmentioning

confidence: 99%

Improving the adhesion of CrN coatings on TC4 alloy substrates by discharge current modulation in magnetron sputtering

Xu,

Zhao,

Zhou

et al. 2023

Surface Engineering

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The study reports the formation of multilayer coatings of CrN with variable gradient modulus on TC4 substrate by varying the discharge current of the hot filament in magnetron sputtering. Results show that multilayer CrN/TC4 has a higher critical failure load (63.4 N > 29.7 N), lower maximum tensile stress (103.8 GPa < 134.3 GPa), and a higher ratio of plastic to elastic deformation work (W p /W e , 2.11 > 1.58) than a single layer CrN/TC4. This indicates that the energy absorption ability of the coating/substrate before failure can be improved by increasing the loose energy-absorbing sublayer, thus improving the coating/substrate adhesion. Notably, the wear rate of both multilayer and single-layer coatings is in the order of 10 −16 m 3 /(N•m), demonstrating their excellent wear resistance. Structural engineering enables the application of multilayer CrN coatings on low-modulus and high-strength alloy substrates, such as TC4.

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