Fabrication of magnesium-boron carbide metal matrix composite by powder metallurgy route: Comparison between microwave and spark plasma sintering

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

“…The mean stress (σ m ) is the mean of three mutually perpendicular axial principal stresses. The mean stress (σ m ) formulae for a cylindrical specimen forming isgivenin equation (11). Since the axial load applied during cold upsetting is compressive, the true axial stress, σ z and the other two stresses hoop (σ θ ) and radial (σ r ) will be of compressive and tensile in nature respectively.…”

“…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].…”

“…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].…”

TiO2 ceramic particles-reinforced aluminum matrix composite prepared by conventional, microwave, and spark plasma sintering

“…12,13 However, the PM process can make difference in mechanical properties and microstructure of AMCs. 14,15 Kennedy and Wyatt 16,17 investigated the effect of manufacturing methods on the mechanical properties of Al-TiC composites. They showed the higher mechanical properties including ultimate tensile strength (UTS) and modulus obtained by PM process rather than casting method due to clustering phenomenon in casting process for Al-10 vol% TiC.…”

Investigation on in-situ formed Al3V-Al-VC nano composite through conventional, microwave and spark plasma sintering

“…Here, the reported or measured temperatures recorded by thermocouples and pyrometers would be considered as the sintering temperature of the sample. On the other hand, each sintering process involves its own generation/transformation mechanism or transfer phenomena between the particles in a micro-scale outlook [4, 5, 6].…”