Synthesis, Characterization and Dry Sliding Wear Behavior of In-situ Formed TiAl3 Precipitate Reinforced A356 Alloy Produced by Mechanical Alloying Method

Özyürek, Dursun; Tunçay, Tansel; Evlen, Hatice; Çiftçi, İbrahim

doi:10.1590/1516-1439.020215

Cited by 20 publications

(4 citation statements)

References 44 publications

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“…Dursun et al [32] pointed out some information about the plastic deformation occurring during the initial phases of wear; and found that there is a positive correlation between this level of wear and the sliding distance. In another study, Choubey et al [27] performed the tribological testing in Hank's solution and reported that the cracks were created on all Ti alloy samples (e.g., Ti-6Al-4V and Ti-5Al-2.5Fe) because of abrasive wear.…”

Section: Wear Behavior Of Ti Alloys (Without Surface Modifications)mentioning

confidence: 99%

An Overview on the Tribological Performance of Titanium Alloys with Surface Modifications for Biomedical Applications

2019

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The need for metallic biomaterials will always remain high with their growing demand in joint replacement in the aging population. This creates need for the market and researchers to focus on the development and advancement of the biometals. Desirable characteristics such as excellent biocompatibility, high strength, comparable elastic modulus with bones, good corrosion resistance, and high wear resistance are the significant issues to address for medical implants, particularly load-bearing orthopedic implants. The widespread use of titanium alloys in biomedical implants create a big demand to identify and assess the behavior and performance of these alloys when used in the human body. Being the most commonly used metal alloy in the fabrication of medical implants, mainly because of its good biocompatibility and corrosion resistance together with its high strength to weight ratio, the tribological behavior of these alloys have always been an important subject for study. Titanium alloys with improved wear resistance will of course enhance the longevity of implants in the body. In this paper, tribological performance of titanium alloys (medical grades) is reviewed. Various methods of surface modifications employed for titanium alloys are also discussed in the context of wear behavior.

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Section: Wear Behavior Of Ti Alloys (Without Surface Modifications)mentioning

confidence: 99%

An Overview on the Tribological Performance of Titanium Alloys with Surface Modifications for Biomedical Applications

2019

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“…The increase in temperature due to the friction between the disc and the sample increases the plastic deformation. The plastic flow formed in the surface of the sample usually occurs in the early stages of the wear and increases with the increase in the sliding distance [29]. This was pointed out in the study conducted by Vencl et al [30] as well.…”

Section: Resultsmentioning

confidence: 98%

An investigation of the effect of high-energy milling time of Ti6Al4V biomaterial on the wear performance in the simulated body fluid environment

Şimşek

Özyürek

2017

Powder Metallurgy

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In this study, the effect of milling time on wear behaviour of the Ti6Al4V alloy produced with the high-energy milling method was investigated. The Ti6Al4V alloy was milled at five different milling times in a mechanical alloying device. The milled powders were cold-pressed under 620 MPa pressure, sintered at 1300°C for 2 h and cooled to room temperature in the furnace. The sintered alloys were characterised with SEM, XRD and hardness and density measurements. Wear tests were performed using a pin-on-disc type wear testing device, under three different loads, at four different sliding distances in simulated body fluid environment. Results showed a decreasing powder size with increasing milling time. The highest decline in size occurred for the powders milled for 120 min. The result of hardness measurements and wear tests showed that samples milled for 120 min had both the highest hardness value and the lowest weight loss.

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“…For AMCs, TiAl 3 is the preferred reinforcement because of its high-temperature strength and low density, but the problem with TiAl 3 is its low ductility at room temperature [29]. In TiAl 3 -reinforced AMCs, TiAl 3 can improve the hardness and high-temperature strength of the matrix, while the good plasticity of the Al matrix can accommodate the deformation of the hard and brittle reinforcement.…”

Section: Introductionmentioning

confidence: 99%

Study on In-Situ Synthesis Process of Ti–Al Intermetallic Compound-Reinforced Al Matrix Composites

Wan

Wang

et al. 2019

Materials

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In this study, ball-milled powder of Ti and Al was used to fabricate Ti–Al intermetallic compound-reinforced Al matrix composites by an in-situ reaction in cold-pressing sintering and hot-pressing sintering processes. The detailed microstructure of the Ti–Al intermetallic compound-reinforced Al composite was characterized by optical microscopy (OM), X-ray diffraction (XRD), energy dispersive spectrometry (EDS), and electron backscattered diffraction (EBSD). The results indicate that a typical core–shell-like structure forms in the reinforced particles. The shell is composed of a series of Ti–Al intermetallic compounds and has good bonding strength and compatibility with the Al matrix and Ti core. With cold-pressing sintering, the shell around the Ti core is closed, and the shell thickness increases as the milling time and holding time increase. With hot-pressing sintering, some radiating cracks emerge in the shell structure and provide paths for further diffusion of Ti and Al atoms. The Kirkendall effect, which is caused by the difference between the diffusion coefficients of Ti and Al, results in the formation of cavities and a reduction in density degree. When the quantity of the intermetallic compounds increases, the hardness of the composites increases and the plasticity decreases. Therefore, factors that affect the quantity of the reinforcements, such as the milling time and holding time, should be determined carefully to improve the comprehensive properties of the composites.

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Synthesis, Characterization and Dry Sliding Wear Behavior of In-situ Formed TiAl3 Precipitate Reinforced A356 Alloy Produced by Mechanical Alloying Method

Cited by 20 publications

References 44 publications

An Overview on the Tribological Performance of Titanium Alloys with Surface Modifications for Biomedical Applications

An Overview on the Tribological Performance of Titanium Alloys with Surface Modifications for Biomedical Applications

An investigation of the effect of high-energy milling time of Ti6Al4V biomaterial on the wear performance in the simulated body fluid environment

Study on In-Situ Synthesis Process of Ti–Al Intermetallic Compound-Reinforced Al Matrix Composites

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