Effects of Additives on the Surface Layers of Boronized TC4 Titanium Alloys

Wang, Li Na; Li, Feng Hua; Dong, Meng; Li, Ying Nan

doi:10.4028/www.scientific.net/amr.887-888.384

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…However, the related experimental studies were conducted under protective gas atmospheric conditions and/or using expensive equipment. 32,[38][39][40][41][42][43] As a result of the present study, it can be concluded adding aluminum to the solid boriding media prevented surface fractures and decreased the oxidation caused by atmospheric gases. Consequently, it was possible to obtain an undamaged boronized titanium surface via solid-state boriding under atmospheric conditions.…”

Section: Resultssupporting

confidence: 58%

A new medium for boriding of Ti6Al4V alloy for biomedical applications

Kaplan

Can

Ulukoy

2016

Proceedings of the Institution of Mechanical Engineers, Part L:

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This study presents a low-cost and environmentally friendly medium for the pack boriding (boronizing) of a Ti6Al4V alloy. Titanium and its alloys are known to be highly reactive and to have extreme oxygen affinity. Therefore, boriding is performed under vacuum or in protective atmospheric conditions. This work evaluated the pack boriding heat treatments of a Ti6Al4V alloy under atmospheric conditions via the various boriding media used by previous researchers. In addition, a new pack boriding medium was developed by adding aluminum. Consequently, this study demonstrated that it is possible to obtain an undamaged titanium surface by applying solid-state boriding under atmospheric conditions.

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Section: Resultssupporting

confidence: 58%

A new medium for boriding of Ti6Al4V alloy for biomedical applications

Kaplan

Can

Ulukoy

2016

Proceedings of the Institution of Mechanical Engineers, Part L:

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“…The friction coefficient of Ti6Al4V fluctuated relatively violently, and the Ti6Al4V substrate underwent plastic deformation and formed adhesion points with steel ball under high contact stress, which were constantly sheared and regenerated, resulting in the fluctuation of the friction coefficient (Wang et al , 2014).…”

Section: Resultsmentioning

confidence: 99%

Tribological investigations of boride layers on Ti6Al4V at room and elevated temperatures

Zhang

Bai

et al. 2023

ILT

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Purpose This paper aims to improve the wear resistance of titanium alloy using a high-hardness boride layer, which was fabricated on Ti6Al4V by a high-temperature boronizing process. Design/methodology/approach The boride layers on Ti6Al4V were obtained at 1000°C for 5–15 h. Scanning electron microscopy, energy dispersive analysis and X-ray diffractometer were used to characterize the properties of the boride layer. The tribological performance of the boride layer at room and elevated temperatures was investigated. Findings The X-ray diffraction analysis showed that the boride layers were a dual-phase structure of TiB and TiB2. When the boronizing time increased from 5 h to 15 h, the microhardness increased from 1192 HV0.5 to 1619.8 HV0.5. At 25°C and elevated temperatures, the friction coefficients of the boride layers were higher than that of Ti6Al4V. The wear track areas of T-5 at 200°C and 400°C were 2.5 × 10–3 and 1.1 × 10–3 mm2, respectively, which were 6.1% and 2.6% of that of Ti6Al4V, indicating boride layer exhibited a significant wear resistance. The wear mechanisms of the boride layer transformed from slight peeling to oxidative wear and abrasive wear as the temperature was raised. Originality/value The findings provide an effective strategy for improving the wear resistance of Ti6Al4V and have important implications for the application of titanium alloy in a high-temperature field.

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