X-ray diffraction measurements of plasma-nitrided Ti–6Al–4V

Silva, S.L.R. da; Kerber, Leandro; Amaral, L.; Santos, Carlos Alberto dos

doi:10.1016/s0257-8972(99)00204-2

Cited by 113 publications

(51 citation statements)

References 14 publications

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“…As previously reported for Ti-6Al-4V alloy, the total pressure has a quite little effect on the surface composition of the nitrided samples 36 . Therefore, this parameter was allowed to vary between 0.5 and 7.5 × 10 -2 Pa. Three different plasma compositions (nitriding atmosphere) were used (80%N 2 -20%H 2 , 60%N 2 -40%H 2 , 20%N 2 -80%H 2 ).…”

Section: Sample Preparationsupporting

confidence: 81%

Surface modification of titanium by plasma nitriding

et al. 2003

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A systematic investigation was undertaken on commercially pure titanium submitted to plasma nitriding. Thirteen different sets of operational parameters (nitriding time, sample temperature and plasma atmosphere) were used. Surface analyses were performed using X-ray diffraction, nuclear reaction and scanning electron microscopy. Wear tests were done with stainless steel Gracey scaler, sonic apparatus and pin-on-disc machine. The obtained results indicate that the tribological performance can be improved for samples treated with the following conditions: nitriding time of 3 h; plasma atmosphere consisting of 80%N 2 +20%H 2 or 20%N 2 +80%H 2 ; sample temperature during nitriding of 600 or 800 °C.

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Section: Sample Preparationsupporting

confidence: 81%

Surface modification of titanium by plasma nitriding

et al. 2003

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“…Samples did not receive any special preparation and had an average surface roughness of 0.3 μm. From literature [30][31][32], the standard way to characterize the 2θ peaks in Ti-6Al-4V is to use the JCPDS standard for titanium. The hexagonal α-Ti, and cubic β-Ti from the JCPDS standard (file #44-1294, and #44-1288, respectively) were used to determine where peaks should occur.…”

Section: Xrd Analysismentioning

confidence: 99%

Laser Assisted Milling of Ti-6Al-4V ELI with the Analysis of Surface Integrity and its Economics

Hedberg

Shin

2015

Lasers Manuf. Mater. Process.

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This study presents the experimental evaluation of laser assisted milling (LAML) of Ti-6AL-4V ELI (Ti-64), which is used in the orthopedic industry, by using localized preheating of the workpiece via laser irradiation. Improvements to the machinability of this material with LAML are assessed while considering the surface integrity. Suitable laser heating conditions as well as machining conditions are determined based on temperature prediction modeling. Machinability improvements are shown in terms of tool wear, material removal rates and cutting force reduction. Systematic characterization of samples is shown to demonstrate that the machined sub-surfaces are not adversely affected during LAML by precisely controlling laser heating, via hardness measurements, scanning electron microscopy (SEM) for microstructure analysis, and X-ray diffraction (XRD) for residual stresses. An economic analysis shows that LAML provides the cost reduction over conventional machining.

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“…La aparición de nitruros a bajas temperaturas (para nuestro caso entre 450 y 520 °C) inciden directamente en la dureza obtenida por el sustrato y es confirmada por otros autores que obtuvieron nitruros por debajo de los 773 K, ϵ-Ti2N y δ-TiN los cuales están claramente presentes para una atmósfera N / H = 3/2, después de un tratamiento de más de 240 min [17].…”

Section: La Figura 3 Demuestra Lo Anteriormente Expuesto Y Confirma Lunclassified

“…El efecto de la descarga intensa de plasma en la composición sobre la superficie del Ti6Al-4V ELI es una función muy compleja de los parámetros del proceso: tiempo de tratamiento, la proporción de nitrógeno, temperatura de la muestra y la presión total durante el tratamiento, corroborando variables descritas por otros autores [17].…”

Section: La Figura 3 Demuestra Lo Anteriormente Expuesto Y Confirma Lunclassified

Relación entre las propiedades mecánicas y tribológicas de Ti6AL4V ELI nitrurado mediante descarga intensa de plasma

Tavera

Ballesteros

Durán

2014

Cien.Ing.Neogranadina

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En este trabajo se estudió el comportamiento tribológico, la rigidez y dureza, de la superficie de la aleación Ti6Al4V ELI después de llevar a cabo un tratamiento de nitruración por descarga intensa de plasma a temperaturas de 450, 480 y 520 °C. El par tribológico empleado fue metal-metal (pin de Ti6Al4V ELI - disco de Ti6Al4V ELI con tratamiento) para el respectivo cálculo del coeficiente de fricción. Los ensayos de nanoindentación se realizaron con una punta de ultra alta dureza de módulo de rigidez conocido, que permitió obtener la dureza promedio y el módulo de Young en GPa, de acuerdo con las normas ISO 14577 y ASTM G99-95 respectivamente. Para la caracterización del sustrato, se empleó microscopia electrónica de barrido, microscopia de fuerza atómica y difracción de rayos X, obteniendo así características importantes del comportamiento elástico-plástico, antes y después de aplicarse la nitruración a la aleación por descarga intensa de plasma

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X-ray diffraction measurements of plasma-nitrided Ti–6Al–4V

Cited by 113 publications

References 14 publications

Surface modification of titanium by plasma nitriding

Surface modification of titanium by plasma nitriding

Laser Assisted Milling of Ti-6Al-4V ELI with the Analysis of Surface Integrity and its Economics

Relación entre las propiedades mecánicas y tribológicas de Ti6AL4V ELI nitrurado mediante descarga intensa de plasma

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