Correlation between tensile and indentation behavior of particle-reinforced metal matrix composites: an experimental and numerical study

Shen, Yansong; Williams, Jason; Piotrowski, George; Chawla, Nikhilesh; Guo, Yue

doi:10.1016/s1359-6454(01)00226-9

Cited by 112 publications

(51 citation statements)

References 25 publications

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“…This suggests, on the other hand, that the effect of residual porosity (which does also exist) is not significant. It should be here mentioned that a linear relationship between tensile strength and hardness was also reported in [27] for an Al alloy/SiC particles composites with particle contents higher than 10%. Table 3.…”

Section: Flexural Strength Versus Hardnesssupporting

confidence: 62%

Effects of infiltration pressure on mechanical properties of Al–12Si/graphite composites for piston engines

Narciso

Molina

Rodriguez

et al. 2016

Composites Part B: Engineering

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In this work results for the flexural strength and the thermal properties of interpenetrated graphite preforms infiltrated with Al-12wt%Si are discussed and compared to those for packed graphite particles. To make this comparison relevant, graphite particles of four sizes in the range 15-124 µm, were obtained by grinding the graphite preform. Effects of the pressure applied to infiltrate the liquid alloy on composite properties were investigated. In spite of the largely different reinforcement volume fractions (90% in volume in the preform and around 50% in particle compacts) most properties are similar. Only the Coefficient of Thermal Expansion is 50% smaller in the preform composites. Thermal conductivity of the preform composites (slightly below 100 W/m.K), may be increased by reducing the graphite content, alloying, or increasing the infiltration pressure. The strength of particle composites follows Griffith criterion if the defect size is identified with the particle diameter. On the other hand, the composites strength remains increasing up to unusually high values of the infiltration pressure. This is consistent with the drainage curves measured in this work. Mg and Ti additions are those that produce the most significant improvements in performance. Although extensive development work remains to be done, it may be concluded that both mechanical and thermal properties make these materials suitable for the fabrication of piston engines.

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Section: Flexural Strength Versus Hardnesssupporting

confidence: 62%

Effects of infiltration pressure on mechanical properties of Al–12Si/graphite composites for piston engines

Narciso

Molina

Rodriguez

et al. 2016

Composites Part B: Engineering

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“…By carefully controlling the relative amount and distribution of the ingredients of a composite as well as the processing conditions, these properties can be further improved. The correlation between tensile strength and indentation behavior in particle reinforced MMCs manufactured by powder metallurgy technique [2]. The microstructure of SiC reinforced aluminium alloys produced by molten metal method.…”

Section: Introductionmentioning

confidence: 99%

Development of Aluminium Based Silicon Carbide Particulate Metal Matrix Composite

Singla¹,

Dwivedi²,

Singh³

et al. 2009

JMMCE

255

122

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“…Lower tensile strength of Mg-Sic composites was due to the agglomeration of Sic particles because of insufficient mixing speed. The stresses in the particles are much higher than the average particle stress and act as stress concentrations in the composites [4]. It indicated that higher mixing speed of composites would contribute the homogeneous distribution of Sic in the Mg matrix and could improve ,the tensile strength of the Mg-Sic composites.…”

Section: Methodsmentioning

confidence: 99%

“…High hardness of Mg-Sic composites was achieved with 24 hours mixing time which attributed to the homogeneous distribution of Sic particles in the magnesium matrix. The uniformity of Sic particles would increase the particle concentration and tends to increase the resistance to deformation during indentation [4]. Highest tensile strength of Mg-Sic composites was achieved at IO%wt of S i c content which mixing time was 24 hours.…”

Section: Methodsmentioning

confidence: 99%

Effect of Mixing Condition on the Mechanical Properties of Magnesium Based Composites

Muhammad

Mutoh

2015

AMR

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Magnesium based composites reinforced with S i c particles were fabricated by powder metallurgy method. In this study, the effects of mixing conditions, i.e; mixing speed and mixing duration on the mechanical properties of the magnesium based composites were investigated. The hardness, tensile strength and microstructure of composites were studied. It was found that increase of the mixing speed and prolong the mixing time can improved the distribution of Sic particle and mechanical properties of magnesium based composites. Experimental ProcedureA relatively coarse magnesium powders with average particle size of 180pm was used as matrix materials. Silicon carbide (Sic) particles with particle size ranging from 0.5 to 25 pm were used as a reinforcement phase, where the weight fractions were in the range of 5-15wt%. In this study, the Mg powders and Sic particulates were mixed in cylindrical container by using a rotating ball milling machine under a different rotating speed, 84 rpm and 168 rpm. The mixing time ranged from 6 to 24 hours without using any balls or process agent to avoid heat generation during mixing. The fraction of Sic was 5, 10 and 15wt%. The mixed powders were poured in the steel die and pressed at 300MPa and then sintered in the temperature 605°C with the holding time of 2 hours in vacuum. The sintered samples were 30 mm in diameter with 8 mm in thickness. Figure 4.1 shows the SEM observation of the Mg-15wt%SiC composites with mixing speed of 84 rpm. The pores could be observed in the agglomerated Sic at low mixing speed, 84 rpm. This is due to the absence of adhesion between the S i c particles in the clustered regions results in the particle falling out during sectioning and leading to visible porosity in these areas [I]. Figure 1 : the SEM observation of the Mg-1 5wt%SiC composites with mixing speed of 84 rpm Figure 2 shows the SEM observation of the Mg-Sic composites which higher mixing speed, 168 rpm. At higher mixing speed, the distribution of Sic particles was improved. This indicated that slow mixing speed prolongs the time necessary to obtain adequate mixing and faster mixing speed may improve mixing [2]. Result and Discussion

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Correlation between tensile and indentation behavior of particle-reinforced metal matrix composites: an experimental and numerical study

Cited by 112 publications

References 25 publications

Effects of infiltration pressure on mechanical properties of Al–12Si/graphite composites for piston engines

Effects of infiltration pressure on mechanical properties of Al–12Si/graphite composites for piston engines

Development of Aluminium Based Silicon Carbide Particulate Metal Matrix Composite

Effect of Mixing Condition on the Mechanical Properties of Magnesium Based Composites

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