Evaluation of mechanical and wear properties of Ti xNb 7Fe alloys designed for biomedical applications

Ehtemam-Haghighi, Shima; Prashanth, Konda Gokuldoss; Attar, Hooyar; Chaubey, Anil Kumar; Cao, Guanghui; Zhang, Lai-Chang

doi:10.1016/j.matdes.2016.09.029

Cited by 172 publications

(66 citation statements)

References 63 publications

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“…The wear track of the sample observed by SEM is shown in Figure 7. The wear track of the sample (Figure 7) shows the presence of wear scars along the sliding direction typical for a wear surface and the presence of ploughing grooves and delamination at certain regions similar to that reported in References [39][40][41][42]. The process of coating wear was accompanied by cracking of the coating.…”

Section: Resultssupporting

confidence: 67%

“…appearance of an abrasive medium in the contact zone (Figure 7) [42]. The delamination cracks did not lead to significant delamination of the zircon-based ceramic coatings.…”

Section: Resultsmentioning

confidence: 92%

“…The process of coating wear was accompanied by cracking of the coating. Solid phase grains delaminated from the wear surface, which led to the appearance of an abrasive medium in the contact zone ( Figure 7) [42]. The delamination cracks did not lead to significant delamination of the zircon-based ceramic coatings.…”

Section: Resultsmentioning

confidence: 99%

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Zircon-Based Ceramic Coatings Formed by a New Multi-Chamber Gas-Dynamic Accelerator

et al. 2017

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Abstract:In this work, dense zircon-based ceramic coatings were obtained from inexpensive zircon powder on a steel substrate by using a new multi-chamber gas-dynamic accelerator. The microstructure and phase composition of the coating were characterized by scanning electron microscopy, optical microscopy, and X-ray diffraction. The mechanical properties of the coatings were evaluated using microindentation, wear tests and bonding strength tests. The results showed that the obtained zircon-based ceramic coatings were continuous without cracks and bonded well with substrate without a sublayer. The zircon-based ceramic coatings consisted of c-ZrO 2 (major phase), m-ZrO 2 and SiO 2 . The zircon-based ceramic coatings had a porosity of 0.1%, hardness of 526 ± 65 HV 0.2 , and a fracture toughness of 2.5 ± 0.6 (MPa·m 1/2 ). The coatings showed the low specific wear rate and average erosion rate. The failure mode occurring in the tested coatings was cohesive.

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Section: Resultssupporting

confidence: 67%

“…appearance of an abrasive medium in the contact zone (Figure 7) [42]. The delamination cracks did not lead to significant delamination of the zircon-based ceramic coatings.…”

Section: Resultsmentioning

confidence: 92%

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Zircon-Based Ceramic Coatings Formed by a New Multi-Chamber Gas-Dynamic Accelerator

et al. 2017

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“…The wear tracks of the composites show the presence of typical wear features including wear scars, ploughing grooves, and delamination. The composites with (80-100 µm) particle size show shallow ploughing grooves along with the presence of some delamination cracks (Figure 4a), which are formed at the surface of the sample in contact with the counter disc due to high strain levels developed during the wear test [33][34][35]. The samples of 40-80 µm particles size (seen in Figure 4b) also show a similar nature of wear surface but ploughing groves are not clearly visible.…”

Section: Resultsmentioning

confidence: 95%

Effect of Particle Size on Microstructure and Mechanical Properties of Al-Based Composite Reinforced with 10 Vol.% Mechanically Alloyed Mg-7.4%Al Particles

et al. 2016

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Abstract:The effect of Mg-7.4%Al reinforcement particle size on the microstructure and mechanical properties in pure Al matrix composites was investigated. The samples were prepared by hot consolidation using 10 vol.% reinforcement in different size ranges, D, 0 < D < 20 µm (0-20 µm), 20 ≤ D < 40 µm (20-40 µm), 40 ≤ D < 80 µm (40-80 µm) and 80 ≤ D < 100 µm (80-100 µm). The result reveals that particle size has a strong influence on the yield strength, ultimate tensile strength and percentage elongation. As the particle size decreases from 80 ≤ D < 100 µm to 0 < D < 20 µm, both tensile strength and ductility increases from 195 MPa to 295 MPa and 3% to 4% respectively, due to the reduced ligament size and particle fracturing. Wear test results also corroborate the size effect, where accelerated wear is observed in the composite samples reinforced with coarse particles.

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“…It is due to the fact that the increase in volume fraction of Al 2 O 3 nanoparticles led to an increase in the hardness of the composite. Increase of the hardness of the material is beneficial to improve the resistance to wear [47]. In addition, a delamination was found in the microstructure of the worn surface.…”

Section: Influence Of T6 Heat Treatment On Mechanical Propertiesmentioning

confidence: 99%

Microstructure, Mechanical Properties and Wear Behavior of the Rheoformed 2024 Aluminum Matrix Composite Component Reinforced by Al2O3 Nanoparticles

Jiang

Xiao

Che

et al. 2018

Metals

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Abstract:The 2024 nanocomposite reinforced with Al 2 O 3 nanoparticles was fabricated by the ultrasonic assisted semisolid stirring (UASS) method and rheoformed into a cylinder component. Microstructure, mechanical properties, and wear behavior of the rheoformed composite components were investigated. The results showed that the composite components with complete filling status and a good surface were rheoformed successfully. The deformation of semisolid slurries was mainly dominated by flow of liquid incorporating solid grains (FLS), sliding between solid grains (SSG), and plastic deformation of solid grains (PDS). Mechanical properties of the rheoformed composite components were influenced by stirring temperature, stirring time, and volume fraction of Al 2 O 3 nanoparticles. The optimal ultimate tensile strength (UTS) of 358 MPa and YS of 245 MPa were obtained at the bottom of the rheoformed composite components after a 25-min stirring of composite semisolid slurry with 5% Al 2 O 3 nanoparticles at 620 • C. Enhancement of mechanical properties was attributed to high density dislocations and dislocation tangles and uniform dispersed Al 2 O 3 nanoparticles in the aluminum matrix. Natural ageing led to the occurrence of needle-like Al 2 CuMg phase and short-rod-like Al 2 Cu phase. UTS of 417 MPa and YS of 328 MPa of the rheoformed composite components were achieved after T6 heat treatment. Improvement of mechanical properties is due to the more precipitated needle-like Al 2 CuMg phase and short-rod-like Al 2 Cu phase. Wear resistance of the rheoformed composite components was higher than that of the rheoformed matrix component. Wear resistance of the rheoformed composite component increased with an increase in Al 2 O 3 nanoparticles from 1% to 7%. A slight decrease in wear rate resulted from 10% Al 2 O 3 nanoparticles due to greater agglomeration of Al 2 O 3 nanoparticles. A combination mechanism of adhesion and delamination was determined according to worn surface morphology.

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Evaluation of mechanical and wear properties of Ti xNb 7Fe alloys designed for biomedical applications

Cited by 172 publications

References 63 publications

Zircon-Based Ceramic Coatings Formed by a New Multi-Chamber Gas-Dynamic Accelerator

Zircon-Based Ceramic Coatings Formed by a New Multi-Chamber Gas-Dynamic Accelerator

Effect of Particle Size on Microstructure and Mechanical Properties of Al-Based Composite Reinforced with 10 Vol.% Mechanically Alloyed Mg-7.4%Al Particles

Microstructure, Mechanical Properties and Wear Behavior of the Rheoformed 2024 Aluminum Matrix Composite Component Reinforced by Al2O3 Nanoparticles

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