Strengthening Mechanisms in Al3Zr-Reinforced Aluminum Composite Prepared by Ultrasonic Assisted Casting

Gupta, Rahul; Daniel, B.S.S.

doi:10.1007/s11665-021-05558-x

Cited by 16 publications

(8 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Most of the established models reported in the literature 8–28 estimated the yield strength and elastic modulus for aluminum composite reinforced with nano-particles and conventionally considered cylindrical pores at 45°–90° orientation with respect to load direction as derived by Brown et al 32 in their research work “A strength–porosity relation involving different pore geometry and orientation.” However, in the present study, disk-shaped or oblate spheroid pores in the hybrid (SiC + graphite) composite with micron-sized reinforcement were observed and considered to estimate yield strength and elastic modulus. Since the MMCs depend on the volume fraction of the matrix, volume fraction of the reinforcement particle, aspect ratio, grain size, particle size and shape, inter-particle distance, matrix-particle interaction, matrix density, and reinforcement density, porosity content, and the thermo-mechanical process.…”

Section: Resultsmentioning

confidence: 99%

“…Micro-mechanics contributes higher than other mechanism due to the sum of base cast yield strength, grain refinement or Hall-Petch, and dislocation due to CTE mismatch. 9,10,14 Of the different mechanisms, grain refinement contributes less due to the micron-sized reinforcement particle in the matrix followed by load transfer. Meanwhile, the thermal mismatch or CTE mismatch contribution was higher than that of grain refinement and the load transfer strengthening mechanism.…”

Section: Resultsmentioning

confidence: 99%

“…The equation ( 2) was further modified for MMC with micron-sized reinforcement considering (eÞ geometric parameter of disk-shaped or oblate spheroid pores in the present study. 8 Gupta et al, 9 Gupta and Daniel, 10 Chen et al, 11 Srivastava and Chaudhari, 12 Rao 13 E RP Elastic modulus of reinforcement particle Silicon Carbide 2137 GPa; Graphite 227.6 GPa Pandian and Kannan, 7 Leng et al 31 n MP Poisson ratio of matrix phase 0.34 Rao, 13…”

Section: Proposed Theoretical Modelmentioning

confidence: 99%

“…Most earlier research works [8][9][10][11][12][13] on the correlation of strengthening mechanism and yield strength estimation focused on the in situ and ultrasonic processes in a different metal matrix. In recent literature, Sahoo et al 14 reported the correlation between various strengthening mechanisms and yield strength and elastic models for the AA7075 matrix reinforced with sub-micron TiB 2 synthesized through semisolid stirring and ultrasonic agitation-assisted squeeze casting method.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Estimation of yield strength and elastic modulus of aerospace-grade aluminum 7075 composite reinforced with silicon carbide and graphite

Vasanthakumar

Kannan

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

This study aims to find a suitable theoretical model to estimate yield strength and elastic modulus of the AA7075 base cast and hybrid composite reinforced with silicon carbide and graphite (micron-sized) to attain high quality, high performance, and low-cost metal matrix composite. Compared to AA7075 base cast CM1 (AA7075 base cast) ultimate tensile strength, yield strength, and flexural strength of hybrid composite CM4 (AA7075 + 15 wt% SiC + 5 wt% Graphite), CM3 (AA7075 + 10 wt% SiC + 5 wt% Graphite), and CM2 (AA7075 + 5 wt% SiC + 5 wt% Graphite) increased (29%, 24%, and 19%), (36%, 35%, and 27%), and (19%, 13%, and 6%) respectively. Micro-mechanics contributed higher, followed by other strengthening mechanisms like load transfer, grain refinement, and thermal mismatch with respect to the volume fraction of the reinforcement particle in the aluminum metal matrix. In the yield strength model, Ramakrishnan-Modified Shear Lag-Mirza and Chen model, Li model, sum of contribution model, and proposed model estimated closer values. They agreed with experimental data at all values up to 7.34% of reinforcement volume fraction. In the elastic modulus model, Hashin-Shtrikman – average, upper, and lower bound and the proposed model estimated well and agreed with experimental data at lower and higher volume fractions of reinforcement.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Proposed Theoretical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Estimation of yield strength and elastic modulus of aerospace-grade aluminum 7075 composite reinforced with silicon carbide and graphite

Vasanthakumar

Kannan

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

show abstract

“…Due to the difference in thermal expansion coefficient between the particles and matrix, high-density dislocations are generated in the composite, which is the thermal mismatch (CTE) strengthening mechanism [29,30]. Its contribution to yield strength can be expressed by formula (4) [31]:…”

Section: Hot Mismatch Strengthening Mechanismmentioning

confidence: 99%

Microstructure evolution and strengthening mechanism of A356 composites reinforced with micron and nano SiCp

Song

Wang²,

Ma³

et al. 2022

Mater. Res. Express

View full text Add to dashboard Cite

The single scale SiCp reinforcement has a limited effect on the comprehensive performance of the composite, which restricts the optimization and improvement of its comprehensive performance. In order to improve the material's strong plasticity, wear resistance, thermal expansion and other properties of the comprehensive requirements. The (micron and nano) dual-scale SiCp/A356 composites with different volume fractions were prepared using the combination of powder metallurgy and hot extrusion. The effects of different volume fractions of dual-scale SiCp (15, 20, 25, 30 vol.%) on the microstructure and mechanical properties of A356 composites were studied, and the strengthening mechanism of dual-scale SiCp/A356 composites was analyzed. The results show that with the increasing of dual-scale SiCp content, the distribution uniformity and mechanical properties of SiCp first increase and then decrease. When the content of dual-scale SiCp is 25%, the mechanical properties reach their maximum values, with the hardness, yield strength and tensile strength of 112.3 HBW, 228 MPa and 310 MPa, respectively. They are improved by 86.9%, 81.0%, 74.2% as compared with those of A356 alloy, respectively. The fracture modes of dual-scale SiCp/A356 composites are mainly Al matrix tearing and SiCp fracture. The main strengthening mechanism is Orowan strengthening, along with thermal mismatch strengthening, load transfer strengthening and fine grain strengthening.

show abstract

Effect of Multi-axial Forging on Mechanical Properties and Microstructure of AA7075/TaC Composites

Khalkho,

Karunakar

2024

The Minerals, Metals &Amp; Materials Series

View full text Add to dashboard Cite

Strengthening Mechanisms in Al3Zr-Reinforced Aluminum Composite Prepared by Ultrasonic Assisted Casting

Cited by 16 publications

References 51 publications

Estimation of yield strength and elastic modulus of aerospace-grade aluminum 7075 composite reinforced with silicon carbide and graphite

Estimation of yield strength and elastic modulus of aerospace-grade aluminum 7075 composite reinforced with silicon carbide and graphite

Microstructure evolution and strengthening mechanism of A356 composites reinforced with micron and nano SiCp

Effect of Multi-axial Forging on Mechanical Properties and Microstructure of AA7075/TaC Composites

Contact Info

Product

Resources

About