Untitled

Saha, Ratan K.; Morris, E. Kaiser; Chawla, Nikhilesh; Pickard, S.M.

doi:10.1023/a:1017960912030

Cited by 23 publications

(4 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, the GNF clusters reduce the contact between the composite pin and the counterface surface metal. The formation of carbide acts as a barrier to the Mg matrix during abrasive sliding and weakens the worn surface, and it enhanced the wear resistance [26]. The good distribution of GNFs/Al 2 O 3sf within the Mg matrix reduced the shear stress between the contact sliding surfaces, causing a decrease in COF.…”

Section: Tribological Propertiesof Mg/gnfs/al 2 O 3sf Compositesmentioning

confidence: 99%

Statistical Analysis of Tribological Properties of Mg(AM50)/GNF-Al2O3sf Hybrid Composites

Lee

Kang

Babu

2023

Metals

View full text Add to dashboard Cite

The present article describes the tribological properties of Mg-based hybrid composites reinforced with graphite nanofiber (GNF) and alumina short fiber (Al2O3sf) that were investigated. The Mg/GNF/Al2O3sf hybrid composites with varying volume fraction of fiber (10 vol.%, 15 vol.%, 20 vol.%) were developed. SEM observations indicate that the GNF cluster distributions within the array of the Al2O3sf network are found to be relatively good. The Taguchi design of the experiment has been applied to conduct the wear test, and the statistical analysis of variance (ANOVA) has been used to evaluate the influence of wear test parameters on the wear loss and coefficient of friction (COF) of the composites. The influence of wear test parameters such as volume fraction of fiber (VF), applied load (AL), sliding distance (SD), and sliding speed (SP) on the wear loss and COF of composites was analyzed under dry sliding conditions. The results of ANOVA indicate that the sliding distance was found to be the prominent factor affecting wear loss, and the applied load influenced the COF most significantly. Furthermore, the composites with 20 vol.% of fiber had lower wear loss than those with 10 vol.% and 15 vol.% of fiber. The COF of composites with 15 vol.% of fiber was found to be slightly lower compared to the 10 vol.% and 20 vol.% of fiber cases. The results imply that the hybridization of GNFs and Al2O3sf, as well as the formation of Mg17Al12 and Al2MgC2 precipitates enhanced the tribological properties of the Mg hybrid composites.

show abstract

Section: Tribological Propertiesof Mg/gnfs/al 2 O 3sf Compositesmentioning

confidence: 99%

Statistical Analysis of Tribological Properties of Mg(AM50)/GNF-Al2O3sf Hybrid Composites

Lee

Kang

Babu

2023

Metals

View full text Add to dashboard Cite

show abstract

“…In this work, 10% vol. SiCp/Al network composite RVE models were built, with particle size ∼9.5 μm and cubic model size 100 × 100 × 100 μm 3 . Based on previous works on network composites, 29,40 a grain boundary-like network architecture 31 was created using a software package Neper, which is widely used to generate polycrystalline models 41,42 based on Voronoi arithmetic.…”

Section: Microscopic Structural Modelingmentioning

confidence: 99%

“…1 The macro interfacial decohesion between the clustering layer and monolithic matrix acts as a profound energy absorption mechanism. 1 Based on this philosophy, a variety of three-dimensional (3D) microstructures including isolated, 2,3 bar, 4 ring, 5 laminated, 6 bi-continuous, 7 interpenetrating, 8,9 and network 10–12 architectures were developed in MMCs. Similar strategy was also demonstrated effectiveness in monolithic alloys 13 : multi-scale hierarchical structure simultaneously enhanced the strength and toughness.…”

Section: Introductionmentioning

confidence: 99%

Enhanced stress concentration sensitivity of SiCp/Al composite with network architecture

Gao

Zhang

Qian

et al. 2022

Journal of Composite Materials

View full text Add to dashboard Cite

For network architecture design, stress concentration sensitivity caused by particle shape may change, which is rarely studied. Here, the particle shape dependent stress concentration and its effect on the deformation, fracture and mechanical properties were investigated. Three particle shapes including hexahedron, twenty-six face polyhedron and sphere were utilized to generate different stress distribution states in the matrix. A numerical composite model showing network architecture (like grain boundary) was applied. A strong correlation between particle shape, stress concentration factor (RSiC) and mechanical properties of network composite was built. The particle shape affected the load-bearing capability due to the stress concentration state generated at particle edges. Near the yield point, hexahedron particle wall parallel to the load direction (PaW) was more effective in carrying loads (~1000 MPa) than that of twenty-six face polyhedron (750-1000 MPa) and sphere (600-1000 MPa) particles. In network composites reinforced by different shape particles, the main crack always initiated in perpendicular network walls (PeW), but propagated along different paths: in Al matrix for hexahedron particle, along macro-interface of SiC/Al–Al for twenty-six face polyhedron particle and in PeW for sphere particle. Such crack propagation manners contributed to the different elongations of network composites by various particle shapes: sphere > twenty-six face polyhedron > hexahedron particles. Selection of round particle and adjustment of local volume fraction improved elongation with a sacrifice of modulus and strength.

show abstract

“…Squeeze casting can also be used to obtain composites with relatively high reinforcement volume fractions (> 40%) (Mortensen et al, 1988;Saha et al, 2002). In conventional casting, achieving homogeneous particle packing and distribution at high volume fractions of reinforcement is problematic.…”

Section: Squeeze Castingmentioning

confidence: 99%

Processing

2006

Metal Matrix Composites

View full text Add to dashboard Cite

Untitled

Cited by 23 publications

References 3 publications

Statistical Analysis of Tribological Properties of Mg(AM50)/GNF-Al2O3sf Hybrid Composites

Statistical Analysis of Tribological Properties of Mg(AM50)/GNF-Al2O3sf Hybrid Composites

Enhanced stress concentration sensitivity of SiCp/Al composite with network architecture

Processing

Contact Info

Product

Resources

About