Mr. Zhijin Lin - M.Sc. Candidate
09/03/2025
ZOOM
13:30 - Jerusalem time / 19:30 - Beijing time
A dental implant consists of an artificial prosthesis inserted into the gumline to replace damaged or missing teeth. The abutment screw, typically made of Ti-6Al-4V, must withstand high stresses from chewing and oral disorders. However, screw failure remains a common issue, leading to complex removal procedures and extended treatment times. In this study, electropulsing (EP) treatment was applied to Ti-6Al-4V to induce phase transformations, aiming to improve its mechanical properties. EP treatment was utilized to efficiently manipulate the phase transformation and mechanical properties of Ti-6Al-4V alloy in 4 min within 60 EP cycles, the influence of the duration of single EP (from 1ms to 2ms) was investigated. Below 1400 μs, alpha to beta phase transition can be observed and beyond this threshold, beta phase transferred to alpha’ and alpha’’ phases during air cooling. Due to the formation of alpha’’ phases, the tensile strength can be improved without extensive sacrifice of ductility. Using this
technique, a new direction to produce higher strength Ti64 is emerge, this method possesses much lower thermal energy input in industrial field.