Mechanical Properties of Titanium–Titanium Boride Composites Through Nanoindentation and Ultrasonic Techniques — An Evaluation Perspective

Selvakumar, M.; Chandrasekar, P.; Ravisankar, B.; Balaraju, J.N.; Mohanraj, M.

doi:10.1007/s11106-015-9650-6

Cited by 13 publications

(9 citation statements)

References 38 publications

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“…The microstructure of the SPS composite depicts very fine TiB needles and whiskers as shown in Fig. 1a [7]. Similarly, spherical hard TiB 2 particles are observed in the composites processed through HIP (Fig.…”

Section: Characterization Of Materialsmentioning

confidence: 65%

“…During the last decade, titanium and its alloys are well established for its applications in aerospace, chemical, marine and biomedical fields due to its low density, high specific strength, good fatigue and corrosion resistance [1][2][3][4][5][6][7][8][9][10]. Drilling difficult-to-machine materials present significant challenges to existing techniques.…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigation and analysis of drilling parameters of metal matrix (Ti/TiB) composites

Ramkumar¹,

Selvakumar²,

Mohanraj

et al. 2018

J Braz. Soc. Mech. Sci. Eng.

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The present study focuses on the drilling processes and its parameters of titanium-titanium boride composites which are optimized using Taguchi technique. The titanium-titanium boride composites aiming 20% and 40% of titanium boride (by volume) is processed through three different powder metallurgical techniques such as, spark plasma sintering, hot isostatic pressing and vacuum sintering, respectively. It is processed through the drilled holes in the composites of 1 mm thickness using a solid carbide drill of 2 mm diameter. The effects of process parameters such as, feed rate, spindle speed and processing techniques on the drilling thrust force and surface roughness are analyzed. The results reveal that the feed rate and processing techniques are the most significant parameters influencing the thrust force and surface roughness. High thrust force and surface roughness are observed for the composites with 40% of titanium boride (by volume) processed through the spark plasma sintering technique. Further, the wear mode of drill edges, workpiece damage and chip morphology are also examined.

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Section: Characterization Of Materialsmentioning

confidence: 65%

Section: Introductionmentioning

confidence: 99%

Experimental investigation and analysis of drilling parameters of metal matrix (Ti/TiB) composites

Ramkumar¹,

Selvakumar²,

Mohanraj

et al. 2018

J Braz. Soc. Mech. Sci. Eng.

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“…The material processing techniques of the composites were described in an earlier reported work [8]. Figure 1 shows the test samples which were cut from the sintered samples using EDM.…”

Section: Methodsmentioning

confidence: 99%

“…4, it is discovered that the sintering strategy does not significantly affect the deliberate E and H worth [21]. Modulus of elasticity, the shear modulus measurable by nano-indentation shows same shift of qualities for every one of the composites among three-dimensional deviations [8]. Bulk properties like hardness and fracture toughness are often correlative with wear reaction conduct of a material.…”

Section: Hardness and Nano-indentation Fracture Resistancementioning

confidence: 98%

“…Regardless of their tempting mechanical and physical properties, Ti and its amalgams ordinarily show poor tribological properties [8]. With the incorporation of ceramic particles like TiB, TiC and TiN into Ti, Titanium composites are delivered with higher hardness and wear resistance [6][7][8]. Wear is classified based on the type of motion encountered, viz., sliding, impact and rolling contact.…”

Section: Introductionmentioning

confidence: 99%

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Experimental investigations of reciprocating wear behavior of metal matrix (Ti/TiB) composites

Selvakumar¹,

Ramkumar²,

Mohanraj

et al. 2020

Archiv.Civ.Mech.Eng

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In this paper, the reciprocating wear behavior of titanium-titanium boride composites with 20 and 40 (by vol. %) titanium boride (TiB) particles IS investigated in dry sliding conditions against Al 2 O 3 ceramic balls. The trials have been observed at three loading conditions such as 5, 10 and 15 N load. The composites were processed by three powder metallurgical techniques such as spark plasma sintering (SPS), vacuum sintering (VS) and hot isostatic pressing (HIP). The electron probe microanalysis (EPMA) was used to analyze the homogeneity of Ti and boride phases in the composites. The hardness and indentation fracture resistance were evaluated using nano-indentation technique. The load-depth curves of indents for Ti-TiB shows the deviations of the modulus of elasticity within the spark plasma sintering (SPS), vacuum sintering (VS) and hot isostatic pressing (HIP).The wear resistance of the fabricated samples was analyzed using reciprocating wear tester. The SPS composite (Ti-38.5% TiB) showed lower coefficient of friction (0.07), lower wear volume (0.4368 mm 3) and wear rate (0.000276 mm 3 /m) when compared to HIP and VS, which is attributed to the presence of fine titanium boride needles of high hardness, contributing to improving wear resistance. The surface morphology reveals that the composites processed through spark plasma sintering (SPS) and hot isostatic pressing (HIP) are subjected to minor plastic deformation. The outcome of this work is more beneficial to automotive brake pad, precision manufacturing and locomotives to avoid critical wear failures.

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Thermal characterization of titanium–titanium boride composites

Selvakumar¹,

Ramkumar²,

Chandrasekar

2019

J Therm Anal Calorim

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Mechanical Properties of Titanium–Titanium Boride Composites Through Nanoindentation and Ultrasonic Techniques — An Evaluation Perspective

Cited by 13 publications

References 38 publications

Experimental investigation and analysis of drilling parameters of metal matrix (Ti/TiB) composites

Experimental investigation and analysis of drilling parameters of metal matrix (Ti/TiB) composites

Experimental investigations of reciprocating wear behavior of metal matrix (Ti/TiB) composites

Thermal characterization of titanium–titanium boride composites

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