Workability studies on sintered Cu–10SiC preforms during cold axial upsetting

Sumathi, M.; Selvakumar, N.; Narayanasamy, R.

doi:10.1016/j.matdes.2012.02.004

Cited by 21 publications

(10 citation statements)

References 16 publications

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“…The three types of strains true axial strain (ε Z ), true hoop strain (ε θ ) and conventional hoop strain (ε' θ ) are essential for theoretical investigations of workability studies. The strain calculations are followed as per the standard [44].…”

Section: Stresses and Strains Referred To Triaxial Stress Statementioning

confidence: 99%

Study on formability and strain hardening index: influence of particle size of boron carbide (B₄C) in magnesium matrix composites fabricated by powder metallurgy technique

Rajkumar¹,

Kailasanathan²,

Senthilkumar³

et al. 2020

Mater. Res. Express

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In the present investigation, Magnesium composites have been fabricated with boron carbide (B 4 C) as reinforcement by powder metallurgicaltechnique. Two different particle sizes-micro and nano B 4 C particles with weight percentage of 0%, 5% and 10% has been studied. The green compacts were prepared by cold pressing and then sintering the specimens before being subjected to cold upsetting under triaxial stress state condition in order to study the phenomenon of workability and instantaneous strain hardening index. Powder characterizations are discussed using x-ray Diffraction peaks, Scanning Electron Microscope images and Energy Dispersive Spectrum analysis. Cold upsetting has been preferred to investigate the performance of the composites. The values of formability stress index factor (β σ ), various stress ratio (σ θ /σ eff , σ m /σ eff andσ z /σ m ) parameters and instantaneous strain hardening index (n i ) are observed for increase in % of B 4 C particles and its sizes. The experimental results were analyzed pertaining to relative density. The results reveal that Mg-10% nano B 4 C composite has higher relative density, formability stress index factor and hence high workability than the other composites. The addition of B 4 C particles as reinforcement affects the strain hardening index due to geometric and work hardening of the composites. particles or whiskers with even small volume fractions greatlyimprove the strength and stiffness of the composites [10].Among various reinforcements used with magnesium, boron carbide (B 4 C) is the best because of its low density combined with high hardness, fracture toughness, superior elastic modulus and tremendous wear resistance [11,12]. Because of its better properties, it has extensive applications in nuclear, automobile and aerospace sectors and high skilled applications such as light weight shields, fast-breeders, abrasivegrit, and nozzles, cutting and grinding tools and so on [13][14][15].The popularity of magnesium matrix composites in day-to-day life is delayed because of the cost, which mainly involves the cost of reinforcement particles and the method of fabrication [16]. Hence the potential of magnesium matrix composites with wide variety of reinforcing materials in advanced functional and structural materials needs attention in processing techniques and their features in order to select the suitablefabricationtechnique for that particular composite material. To fabricate magnesium matrix composites, three well-known processing techniques namely Powder Metallurgy (P/M), squeeze casting and stir casting are available [17]. The P/M technique is attractive among others because particlesreinforcedwere evenly distributedin the matrix thereby regulating the microstructure and improving the structural and mechanical properties [18].Al-SiC composites subjected to mechanical, machinability and metallurgical studies reveals that reducing the size of the particle reinforcement increases the life in low cycle fatigue because of cyclic hardening [19]. Relative density of...

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Section: Stresses and Strains Referred To Triaxial Stress Statementioning

confidence: 99%

Study on formability and strain hardening index: influence of particle size of boron carbide (B₄C) in magnesium matrix composites fabricated by powder metallurgy technique

Rajkumar¹,

Kailasanathan²,

Senthilkumar³

et al. 2020

Mater. Res. Express

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“…Cu-15W 850 y = 8E À 07x 2 À 0.002x + 2.950 0.925 800 y = 7E À 07x 2 À 0.002x + 3.215 0.945 750 y = 1E À 06x 2 À 0.003x + 3.808 0.950 nomial equation [27]. A parabolic curve fitting technique has been applied to relate the hardness and sliding distance for different material (Cu and Cu-W composites).…”

Section: Effect Of Hardness On Sintering Temperaturementioning

confidence: 99%

Experimental and prediction of sintered Cu–W composite by using artificial neural networks

Vettivel¹,

Selvakumar²,

Leema

2013

Materials & Design

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“…The reaction gets initiated at 720 0 C. The whole reaction process was carried out in a tubular furnace with continuous supply of argon gas to maintain controlled atmosphere. The reacted mixture was grounded and leached with HCL solution and ZrB2 powder was tapped [5]. The particle morphology of SHS ZrB2 powder was shown Fig.…”

Section: International Journal Of Advanced Engineering Research and Smentioning

confidence: 99%

Some aspects of Cold Deformation studies of Al-ZrB2 composites

Venkatesh¹,

Chaitanya²,

Yadav³

2017

IJAERS

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Workability studies on sintered Cu–10SiC preforms during cold axial upsetting

Cited by 21 publications

References 16 publications

Study on formability and strain hardening index: influence of particle size of boron carbide (B₄C) in magnesium matrix composites fabricated by powder metallurgy technique

Study on formability and strain hardening index: influence of particle size of boron carbide (B₄C) in magnesium matrix composites fabricated by powder metallurgy technique

Experimental and prediction of sintered Cu–W composite by using artificial neural networks

Some aspects of Cold Deformation studies of Al-ZrB2 composites

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Workability studies on sintered Cu–10SiC preforms during cold axial upsetting

Cited by 21 publications

References 16 publications

Study on formability and strain hardening index: influence of particle size of boron carbide (B4C) in magnesium matrix composites fabricated by powder metallurgy technique

Study on formability and strain hardening index: influence of particle size of boron carbide (B4C) in magnesium matrix composites fabricated by powder metallurgy technique

Experimental and prediction of sintered Cu–W composite by using artificial neural networks

Some aspects of Cold Deformation studies of Al-ZrB2 composites

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Product

Resources

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Study on formability and strain hardening index: influence of particle size of boron carbide (B₄C) in magnesium matrix composites fabricated by powder metallurgy technique

Study on formability and strain hardening index: influence of particle size of boron carbide (B₄C) in magnesium matrix composites fabricated by powder metallurgy technique