Investigation of Surface Integrity in High Speed Milling of Gamma Titanium Aluminide under Dry and Minimum Quantity Lubricant Conditions

Kolahdouz, S.; Hadi, Mostafa; Arezoo, Behrooz; Zamani, Seyed Mohammad Mahdi

doi:10.1016/j.procir.2014.08.016

Cited by 27 publications

(28 citation statements)

References 29 publications

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“…Chemical analysis of the recast layer (Region A) and subsurface area under the recast layer (Region B) indicated the presence of Ti, Al, O, Cu, Nb, and Cr. The presence of Cu in the recast layer is due to ion transfer from the brass wire electrode which has been previously reported by other researchers [24,27,28]. The presence of the oxygen for oxides produced by mWEDM as compared with the original γ-TiAl substrate can be attributed to preferential oxidation of Ti which is thermodynamically favored [35].…”

Section: Surface Characterizationssupporting

confidence: 63%

“…Figure 3 shows cross-sectional SEM-BSD images of the surface-treated γ-TiAl substrate. The observations at higher magnifications in Sample H ( figure 3(b)) reveal the presence of well-defined 2 μm thick, a continuous deformed layer representing work hardening and plastic deformation [24,31]. It has been reported, work hardening generally improves the mechanical properties of this area [32].…”

Section: Surface Characterizationsmentioning

confidence: 74%

“…The parameters for HSM-MQL surface treatment were chosen based on previous research that explained in detail in [24].…”

Section: Hsm-mql Surface Treatmentmentioning

confidence: 99%

See 2 more Smart Citations

Advanced surface treatment techniques counteract biofilm-associated infections on dental implants

Koopaie

Bordbar‐Khiabani

Kolahdooz

et al. 2020

Mater. Res. Express

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Topography and surface chemistry can significantly affect biofilm formation on dental implants. Recently, the γ-TiAl alloy was considered as the most reliable candidates for the preparation of dental implants because of its excellent mechanical strength, chemical stability and biocompatibility. The emphasis of this study lies in the effects of high-speed milling assisted the minimum quantity of lubrication (HSM-MQL), micro-current wire electrical discharge machining (mWEDM), Er,Cr:YSGG laser and sandblasting/largegrit/acid-etching (SLA) treatments on surface morphology, topography, chemical composition, wettability and biofilm-associated infections on the surface of each group. The surface-treated samples were analyzed using a scanning electron microscope (SEM), SEM surface reconstruction, energy dispersive x-ray spectroscopy (EDS) and water contact angle measuring system. SEM and topography images of mWEDM and laser-treated surfaces showed more irregular surfaces compared to SLA and HSM-MQL surfaces. Results showed that mWEDM and laser-treated surfaces revealed hydrophobic behavior. A significant decrease of biofilm formation was observed on mWEDM treated surface due to the hydrophobicity and existence of the copper element in the recast layer chemical composition. Moreover, EDS confirmed that the zirconium, silicon, and fluorine elements were decorated onto the SLA treated γ-TiAl surface that can have a direct effect on the anti-bacterial activity.

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Section: Surface Characterizationssupporting

confidence: 63%

Section: Surface Characterizationsmentioning

confidence: 74%

See 1 more Smart Citation

Advanced surface treatment techniques counteract biofilm-associated infections on dental implants

Koopaie

Bordbar‐Khiabani

Kolahdooz

et al. 2020

Mater. Res. Express

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“…The surface integrity researches are conducted assessing a combination of different values of cutting parameters. Machining tests are carried out with cutting speed values from 20 m/min (Aust and Niemann 1999) to 600 m/min (Kolahdouz et al 2015), feed rates from 0.005 m/min (Kolahdouz et al 2015) to 0.12 m/min (Aspinwall et al 2013) and depth of cut from 0.1 mm (Kolahdouz et al 2015) to 5 mm (Aust and Niemann 1999). Table 3 provides some cutting parameters studied on optimization of surface roughness for machining improvement.…”

Section: Milling Of Gamma Tialmentioning

confidence: 99%

A Review of Milling of Gamma Titanium Aluminides

Castellanos

Alves

2018

UPjeng

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Intermetallic titanium aluminide alloys are used in the high technology engineering field with the goal of achieving weight reduction in different components, exposed to corrosive environments and high temperatures in aeronautical and automotive industries. Despite their attractive properties such as low density, high strength, high stiffness and good corrosion, creep and oxidation resistance, the machinability of titanium aluminide alloys is difficult due to its high hardness, chemical reactivity, and low ductility. This article reviews the state of the art regarding the machinability of titanium aluminide alloys and focuses on the analysis of the milling process, namely the process parameters, surface integrity and cutting tools. The influence of titanium aluminides properties on the machinability is also discussed presenting some current trends and further needed research.

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“…Because of their high strength, high brittleness and low thermal conductivity, tool wear increases rapidly [8]. Another issue is the high chemical affinity [9,10] to alternative tool substrates, like cubic boron nitride (CBN) or ceramics.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Coolants in Machining of Titanium Aluminides

Finkeldei¹,

Bleicher²

2016

DAAAM Proceedings

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Titanium and nickel based alloys are two types of industrially used materials. Especially in aerospace and automotive industry, the intermetallic titanium aluminides tend to replace these prevailing materials. Their density is only a half of nickel based alloys and a high strength at room temperature and hot condition is retained. But the high reaction affinity against tool materials, their low Youngs modulus and low heat conductivity cause difficulties in machining. During the machining process, low heat conductivity leads to high thermal loading of tools and therefore a well-directed cooling strategy is necessary. In this paper an overview about different cooling strategies, such as cryogenic carbon dioxide cooling and minimum quantity lubrication of the titanium aluminide Ti-48Al-2Cr-2Nb is shown. Based on a literature research and the experiments conducted in this investigation, cryogenic cooling is a reliable option for reducing toolwear.

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Investigation of Surface Integrity in High Speed Milling of Gamma Titanium Aluminide under Dry and Minimum Quantity Lubricant Conditions

Cited by 27 publications

References 29 publications

Advanced surface treatment techniques counteract biofilm-associated infections on dental implants

Advanced surface treatment techniques counteract biofilm-associated infections on dental implants

A Review of Milling of Gamma Titanium Aluminides

Investigation of Coolants in Machining of Titanium Aluminides

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