Fatigue behavior of modified surface of Ti–6Al–7Nb and CP-Ti by micro-arc oxidation

Campanelli, Leonardo Contri; Duarte, Laís T.; Silva, Paulo Sergio Carvalho Pereira da; Bolfarini, Claudemiro

doi:10.1016/j.matdes.2014.07.074

Cited by 43 publications

(17 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The importance of this subject is such that many surface modification techniques have been studied so far, and proved to be efficient in improving the surface topography and consequently the biological performance of Ti implants. For instance, grit-blasting 2 , chemical etching 3 and electrochemical treatment 4 , including the growth of nanotubes 5 , have provided suitable results. Studies have also shown that laser-based techniques are promising because macro, micro and nanoscale modifications are possible without undesirable contamination, since there is no direct contact with the substrate 6 .…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Fatigue Behavior of Ti-6Al-4V ELI Alloy with Surface Treated by Nd:YAG Laser Irradiation

et al. 2019

Self Cite

View full text Add to dashboard Cite

The effect of a surface treatment by Nd:YAG laser irradiation on the fatigue behavior of Ti-6Al-4V ELI was studied. Axial fatigue tests were performed to obtain S-N curves in polished and laser treated conditions. Roughness measurements and scanning electron microscopy were used to characterize the features of the modified surface. A reduction in the fatigue strength of around 35% was obtained after the laser treatment of the material surface. Although the surface roughness was in the micrometer scale, a notch effect was suggested to be the reason for the deleterious influence of the laser on the fatigue strength. The reduction in the fatigue strength obligatory demands redesign of implants for laser modified surfaces of Ti-6Al-4V alloy.

show abstract

Section: Introductionmentioning

confidence: 99%

Assessment of the Fatigue Behavior of Ti-6Al-4V ELI Alloy with Surface Treated by Nd:YAG Laser Irradiation

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…To solve the problem of FF damage, the anti-wear and anti-fatigue properties of Ti alloys should be simultaneously improved. Surface hardening treatments can improve the wear resistance remarkably [6][7][8] but often reduce the fatigue resistance, owing to the low toughness of the hardened surface [9][10][11][12], making it difficult to solve the anti-wear and anti-fatigue issues through a single surface treatment.…”

Section: Introductionmentioning

confidence: 99%

A Comparison Study of Wear and Fretting Fatigue Behavior Between Cr-alloyed Layer and Cr–Ti Solid-solution Layer

Liu

Zhang

et al. 2016

Acta Metall. Sin. (Engl. Lett.)

View full text Add to dashboard Cite

This work reported a comparison between the wear and fretting fatigue (FF) behaviors of a Cr-alloyed layer and a Cr-Ti solid-solution layer. The hardness and toughness of both layers were evaluated to support this comparison. The results showed that the Cr-alloyed layer had high surface hardness but poor toughness, while the Cr-Ti solid-solution layer had excellent toughness but low hardness. The FF properties of the modified Ti6Al4V alloy depended on the trade-off between two factors: wear resistance and fatigue resistance. Although the Cr-alloyed layer could effectively resist the wear in fretting areas, its poor toughness caused the fatigue resistance to drop sharply and hence led to a premature failure in FF test. Due to the relatively good fatigue resistance, the Cr-Ti solid-solution layer had slightly higher FF life than that of the Cr-alloyed layer; however, its low hardness resulted in severe wear in correspondence with the fretting area and thus a failure to improve the FF properties of Ti6Al4V alloy. When combined with shot peening post-treatment, the FF life of both layers increased by about three times compared to that of the Ti6Al4V alloy. A further study showed that the poor toughness or low hardness still exerted negative influence on combination-treated samples.

show abstract

“…In PEO, mechanical properties, corrosion resistance, and erosion on light metals, such as titanium and aluminum, have improved with 10{100 micron coatings [10,11]. This coating approach is known as an electrical discharge process (unstable, ne, and short-life sparks) on the anode surface due to breakdown voltage with gaseous evolution [12,13]. PEO process is often carried out in weak and environment-compatible basic aqueous solution consisting of silicate, phosphate, and aluminate elements [14].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Processing Time on Microstructure of Surface and Corrosion Resistance of Coatings Resulted by Plasma Electrolytic Oxidation on Titanium Alloy in Hydroxyapatite Nano-particles Electrolyte

2018

View full text Add to dashboard Cite

This study investigated the e ect of coating processing time on the microstructure of surface and corrosion resistance of coatings resulting from Plasma Electrolytic Oxidation (PEO) on the substrate of TiAl6V4 alloy. The coating processes in hydroxyapatite nano-powder electrolytic were carried out under the condition of constant voltage of 600 V and three di erent times of 125, 250, and 350 seconds. Studying the microstructure of coatings identi ed that the coating formed in 125 (s) had a more compact and steady structure with ne surface cavities and less porosity. The X-ray di raction pattern of coating demonstrates that this coating consists of oxide phases of titanium (rutile and anatase) and hydroxyapatite. Moreover, the study of corrosion resistance of coatings by potentiodynamic polarization and electrochemical impedance spectroscopy in corrosive solution of chloride sodium 3.5% showed that the coating formed in 125 s had the most signi cant corrosion resistance potential and the least I Corr and, thus, the highest resistance to corrosion.

show abstract

Fatigue behavior of modified surface of Ti–6Al–7Nb and CP-Ti by micro-arc oxidation

Cited by 43 publications

References 37 publications

Assessment of the Fatigue Behavior of Ti-6Al-4V ELI Alloy with Surface Treated by Nd:YAG Laser Irradiation

Assessment of the Fatigue Behavior of Ti-6Al-4V ELI Alloy with Surface Treated by Nd:YAG Laser Irradiation

A Comparison Study of Wear and Fretting Fatigue Behavior Between Cr-alloyed Layer and Cr–Ti Solid-solution Layer

The Effect of Processing Time on Microstructure of Surface and Corrosion Resistance of Coatings Resulted by Plasma Electrolytic Oxidation on Titanium Alloy in Hydroxyapatite Nano-particles Electrolyte

Contact Info

Product

Resources

About