Effect of Microstructural Variation on Dry Sliding Wear Behavior of Ti-6Al-4V Alloy

Sahoo, Rakesh K.; Jha, B. B.; Sahoo, T. K.; Sahoo, D.

doi:10.1007/s11665-014-0987-7

Cited by 25 publications

(20 citation statements)

References 22 publications

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“…Hence, the microstructure of the Ti64 had a predominant role in the wear behavior at various conditions of sliding. The shift in wear mechanisms observed at different sliding velocities was consistent, regardless of the distinction in the microstructural variation of the specimens considered [50].…”

Section: En 31 Steelsupporting

confidence: 51%

“…Sahoo et al [50] evaluated the effect of discrete microstructures on the wear behavior of Ti64. The lamellar (transformed β-phase), bi-modal (primary α and transformed β-phases) and the equiaxed (α-phase in β-matrix) structural orientations were developed by quench-air cooled-aging at 1,025 °C and 750 °C , 950 °C and 675 °C , solution annealing at 850 °C , respectively.…”

Section: En 31 Steelmentioning

confidence: 99%

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Tribology of Ti6Al4V: A review

2019

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The deleterious innate attribute of Ti6Al4V, the workhorse material among the alloy series of titanium is its incompetent tribo-behavior. Infinite surface modification techniques, viz., the accretion of adherent appendage layers, diffusion hardening, infusion of residual stresses, microstructural evolution, and phase transformations were attempted to enhance the wear resistance of the alloy. The need lies to establish a bridge between the indigenous material properties and the tribo-characteristics of Ti6Al4V so that the enforced improvement techniques can raise the barriers of its applicability. A critical review of the microstructural transitions, mechanisms governing tribo-behavior and the parametric conditions leading to material removal at dry sliding conditions of Ti6Al4V, falls under the scope of this manuscript. Hence, the prime focus of the approach is to impart a clear-cut perception of the minute variations in mechanical, metallurgical, and tribological characteristics of the alloy at interactive instances with distinct counter-body surfaces.

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Section: En 31 Steelsupporting

confidence: 51%

Section: En 31 Steelmentioning

confidence: 99%

Tribology of Ti6Al4V: A review

2019

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“…The decline in the hardness of the near-surface zone can be attributed to a compound effect: The AS material was transformed from a hard martensitic α' phase to a soft α phase, and the positive erosion produced a thermosoftened layer. According to previous reports [22,27], the hardness of the double phase Ti-6Al-4V alloy decreases with the rate of the α phase, which can be attributed to a new α phase formation and the thermal compound effect caused by particle impact [23]. The formation of the hardened zone can be attributed to positive erosion caused by the downward pressure of the specimen surface.…”

Section: Resultsmentioning

confidence: 69%

Particle Erosion Induced Phase Transformation of Different Matrix Microstructures of Powder Bed Fusion Ti-6Al-4V Alloy Flakes

Zhao

Hung

Lui

2019

Metals

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In this study, powder bed fusion Ti-6Al-4V alloy flake was subjected to heat treatment at 800 °C for 4 h for inducing the complete transformation of the α’ phase into the α+β phases. An erosion experiment with 450 µm mean particle diameter of Al2O3 particles at a 90° impact on both the as- powder bed fusion (PBF) Ti-6Al-4V and the 4-h 800 °C heat-treated specimens to clarify the particle erosion-induced phase transformation behavior and its effect on mechanical properties. Particle erosion-induced phase transformation to the α phase was observed on both the as-PBF Ti-6Al-4V and the heat-treated specimens. It brought about a sequential formation from the surface to the bottom: (1) a surface softened zone, (2) a hardened zone, and (3) a hardness stabilization zone. The as-PBF Ti-6Al-4V was positively eroded by erosion particles, decreasing strength and ductility. In the case of the heat-treated specimens, we found decreased strength yet an increased ductility.

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“…These factors together lead to slighter adhesion wear of CT Ti alloy samples. If the scratching speed is low, the oxidation wear of the titanium alloy will also occur at a low temperature [33]. Therefore, under dry friction and wear conditions, abrasive wear, adhesion wear and slight oxidation wear will occur on titanium alloys.…”

Section: Resultsmentioning

confidence: 99%

“…When the load was between 50 N and 150 N, the scratch speed was between 0.3 m/s and 0.9 m/s and the test time was between 30 min and 60 min, and the effect of these friction factors on wear weight loss showed the following rules: Pressure (load) > scratch speed > test time > microstructure. The oxidation wear occurs at a low scratch speed, while the delamination wear occurs at a high scratch speed [33]. In the aspect of friction reduction of titanium alloys, the friction and wear properties of titanium alloys can be improved by choosing suitable kinds of solid lubricants, particle sizes and concentrations [34,35].…”

Section: Introductionmentioning

confidence: 99%

Investigation on Wear Behavior of Cryogenically Treated Ti-6Al-4V Titanium Alloy under Dry and Wet Conditions

Wang

Yang

et al. 2019

Materials

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Titanium alloys are widely used in many fields because of their excellent comprehensive properties. However, its poor friction and wear properties limit its many potential applications. In general, the surface roughness of important parts manufactured by titanium alloy should meet certain requirements. As a low-cost and high-efficiency processing method, barrel finishing has been used for the surface finishing of titanium alloys. The main material removal mechanism of barrel finishing is micro-cutting/grinding, which is similar to the material wear mechanism under some conditions. In addition, titanium alloys are subjected to a low force in common surface finishing processes. Cryogenic treatment is a method that can improve the comprehensive properties of titanium alloys. Therefore, the friction and wear behavior of cryogenically treated Ti-6Al-4V titanium alloy (CT Ti alloy) and non-cryogenically treated Ti-6Al-4V titanium alloy (NT Ti alloy) at a low load and scratch speed was studied comparatively in this paper. The results show that the CT Ti alloy exhibits a lower friction coefficient and wear rate under both dry and wet wear conditions. Under wet conditions, the stabilized friction coefficient is lower than that under dry conditions. The stabilized friction coefficient of CT Ti alloy is 0.18 after reaching a stable wear stage under wet conditions. Under dry wear conditions, the NT Ti alloy mainly showed typical abrasive wear, heavy adhesion wear and oxidation wear characters. The wear mechanisms of CT Ti alloy are mainly abrasive wear, slight adhesion wear and oxidation wear. Under wet wear conditions, the wear mechanism of NT Ti alloy is abrasive wear and slight adhesion wear. After cryogenic treatment, the mechanism for CT Ti alloy is slight abrasive wear.

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Effect of Microstructural Variation on Dry Sliding Wear Behavior of Ti-6Al-4V Alloy

Cited by 25 publications

References 22 publications

Tribology of Ti6Al4V: A review

Tribology of Ti6Al4V: A review

Particle Erosion Induced Phase Transformation of Different Matrix Microstructures of Powder Bed Fusion Ti-6Al-4V Alloy Flakes

Investigation on Wear Behavior of Cryogenically Treated Ti-6Al-4V Titanium Alloy under Dry and Wet Conditions

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