Impact of Cryogenic Treatment on HCF and FCP Performance of β-Solution Treated Ti-6Al-4V ELI Biomaterial

Abstract

The poor fatigue strength of Ti-6Al-4V ELI is a main cause of failure in structural implants. In this work, Ti-6Al-4V ELI was subjected to β-solution treatment to obtain martensite microstructure and further subjected to −196 °C for 24 h. Significant improvement in high cycle fatigue performance of martensite Ti-6Al-4V ELI was observed on exposure to cryogenic cycle. Resistance to fatigue crack growth of alloy was augmented in martensite structure as compared with mill annealed sample and the same was retained even after exposure to cryogenic treatment. The variation observed in fatigue behavior due to cryogenic treatment was correlated with fractography and metallurgical investigations. Improvement in high cycle fatigue performance can be attributed to a combined effect of a decrease in the size of prior β grain, formation of massive α patch and its subsequent transformation into ultra-fine α and β during the soaking period at −196 °C.

Fatigue behavior improvement of hardened parts using sequential hard turning, grinding, and ball burnishing operations

“…Finally, in the most recent work, Singla et al. 11 studied the impact of cryogenic treatment on the HCF performance of a β-solution-treated Ti-6Al-4V ELI biomaterial and reported significant improvement in the HCF performance.…”

“…As mentioned above, there are different surface treatment processes such as shot peening, 4 forging, 6 LSP, 8 ball burnishing, 10 and cryogenic treatment, 11 which can be used to improve the fatigue behavior of difficult-to-cut materials. Macek et al.…”

Comparing the Maximum Load Capacity and Modes of Failure of Original Equipment Manufactured and Aftermarket Titanium Abutments in Internal Hexagonal Implants

“…However, due to its excellent biocompatibility and mechanical properties, titanium abutment is still often utilized in clinical practice [6,7]. Among the formulations of titanium alloys, titanium-aluminum-vanadium (Ti-6Al-4V) is the most widely used in dentistry due to its better physical and mechanical properties and it being more fatigue-resistant compared to commercially pure titanium [8,9].…”

Metallographic and Mechanical Research of the O–Ti2AlNb Alloy

“…The microstructure of materials has a large impact on the rate of fatigue crack growth and has a decisive role in the propagation of cracks [ 26 ]. The analysis of surface, static and fatigue fractures of the specimens, carried out by means of SEM microscopy, revealed the location of the source of cracking, and these observations provided more details on the place of formation and mechanism of crack growth, both static and cyclic.…”