The precipitation and distribution behaviors of in situ-formed titanium boride whiskers (TiB) TiBw-reinforced Ti-6%Al-4%V (Ti64) composites fabricated from an elemental mixture Ti64 alloy powder TiB2 particles by selective laser melting were investigated. primary TiB strongly depends on B content. For a content less than 2 mass%, when the liquid → β-phase transformation occurred atoms discharge...

The microstructure of additively manufactured Ti-6Al-4V (Ti64) produced by a laser powder bed fusion process was studied during post-build heat treatments between 1043 K (770 °C) and just above the β transus temperature 1241 (1008 in situ using high-energy X-ray diffraction. Parallel studies on traditionally wrought annealed Ti64 were completed as baseline comparison. initial final grain struct...

Ti-6Al-4V (Ti64) alloy is one of the most widely used orthopedic implant materials due to its mechanical properties, corrosion resistance, and biocompatibility nature. Porous Ti64 structures are gaining more research interest as bone implants they can help in reducing stress-shielding effect when compared their solid counterpart. The literature shows that porous fabricated using different addit...

Additive manufacturing of porous Ti6Al4V (Ti64) parts is promising for biomedical applications. In this study, Ti64 scaffolds with two scales interconnected porosity networks were developed using a direct-ink writing process. Inks made by dissolving copolymer (Pluronic F-127) in water to obtain hydrogel, which was then loaded particles. Both Pluronic F-127 amount the hydrogel and solid loading ...

Abstract This paper addresses the use of alloying additions to titanium alloys for additive manufacturing (AM) with specific objective producing equiaxed microstructures. The are among those that increase freezing ranges such significant solutal undercooling results when combined rapid cooling rates associated AM, and so be effective in inducing a columnar-to-equiaxed transition (CET). Firstly,...

Corrosion resistance is a key feature of titanium biocompatibility. However, Ti surfaces exposed to critical environments (such as, chronic infection and inflammation) can undergo corrosion processes in vivo , leading an unfavorable biological response clinical failure, which remains poorly explored. In this study, we characterized experimental model replicate the surface features process obser...

The dry sliding wear behavior of as-cast pristine and boron-modified Ti-6Al-4V (Ti64) alloys (having 0.3 0.55 wt% B) is investigated using pin-on-disc experiments with the pin being Ti64 alloy EN31 steel disc. Experiments are performed at speeds (s) 1, 2, 4 m/s temperatures 300 573 K. A mixed response in observed. At lowest speed, all three (except 0.55B K) exhibit similar rates, abrasive domin...