The Microstructure and Mechanical Properties of SiC Reinforced Magnesium Based Composites by Rheocasting Process

Poddar, Palash; Mukherjee, S. K.; Sahoo, K L

doi:10.1007/s11665-008-9334-1

Cited by 49 publications

(18 citation statements)

References 28 publications

(10 reference statements)

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“…Similarly, in rheo-casting process AZ91D composites reinforced with SiC particulates, the UTS and ductility of composite materials were lower than those of the unreinforced alloy. However, the 15-μ m particle-composite showed a significantly higher elastic modulus than the 150-μ m SiC particle-composite [11] . compositions of composites, i.e., TiO 2 -filled A384 alloy composites.…”

Section: Effect Of Tensile Strength and Modulus On Tio 2 -Filled A384mentioning

confidence: 79%

“…Increases in hardness of the composite with hard dispersoids have been reported by several researchers. According to Poddar and Mukherjee [11] , the composite sample shows higher hardness values than do their unreinforced counterparts. This is because of the presence of hard SiC particles, which aid in the load-bearing capacity of the material and also restrict the matrix deformation by constraining dislocation movement.…”

Section: Effect Of Hardness On Tio 2 -Filled A384 Alloy Compositesmentioning

confidence: 99%

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Mechanical and fracture toughness behavior of TiO2-filled A384 metal alloy composites

Gangwar

Kukshal

Patnaik

et al. 2013

Science and Engineering of Composite Materials

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In the present study, A384 alloy composites filled with titanium dioxide (TiO 2 ) were fabricated by the stir casting technique by varying the filler percentages from 0 to 8 wt.-% at an interval of 2 wt.-% , respectively. This study focused on the physical, mechanical, and fracture behavior of unfilled and particulate-filled alloy composites. Void content ( % ) and hardness were found to increase from 2.22 % to 3.02 % and from 35.5 to 62.5 Hv, respectively, with the increased filler contents (0 to 8 wt.-% ) for the micro-TiO 2 -filled A384 metal alloy composite. However, mechanical properties such as tensile strength, tensile modulus, and flexural strength showed a decreasing trend for experimental and finite element simulated results. An X-ray diffraction technique was used to study the constituent material present in the composites. The stress intensity factors of the fabricated composites were studied both experimentally and by the finite element method technique. The highest value of stress intensity factor was observed to be 40 MPa.vm for 4 wt.-% micro-TiO 2 -filled alloy composite at 9-mm crack length. A three-dimensional simulation of the fabricated composite using the unit cell model was developed in ANSYS using appropriate boundary conditions for tensile and flexural strength.

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Section: Effect Of Tensile Strength and Modulus On Tio 2 -Filled A384mentioning

confidence: 79%

Section: Effect Of Hardness On Tio 2 -Filled A384 Alloy Compositesmentioning

confidence: 99%

Mechanical and fracture toughness behavior of TiO2-filled A384 metal alloy composites

Gangwar

Kukshal

Patnaik

et al. 2013

Science and Engineering of Composite Materials

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“…Larger TiC grain size leads to smaller interparticle region compared to small particle reinforcement. The increasing of Young's modulus and tensile strength were attributed to smaller interparticle spacing [16]. Tensile load crosses the ultimate tensile strength and fracture of the composites that takes place either by debonding or breaking particles.…”

Section: Discussionmentioning

confidence: 98%

Effect of Manganese on the Microstructure and TiC Precipitation in Hypoeutectoid Steel

Parashivamurthy¹,

Mallikarjuna²

2013

Materials and Manufacturing Processes

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In the present article, influence of manganese on the size and shape of the precipitated TiC crystals by in-situ reaction with varying amounts of manganese in hypoeutectoid steel are presented. Manganese was added up to 6.0% in steps of 1.5%, titanium was fixed at 4%, and carbon at 1.84%. The obtained specimens were examined by using optical, scanning electron microscope (SEM), and X-ray diffraction (XRD) analysis. Tensile properties were evaluated using the ASTM E8 M standard. The microstructure results showed that the in-situ TiC carbides are homogeneously distributed in the metal matrix. Based on the microstructure and XRD pattern, in-situ TiC carbides were identified. The precipitated in-situ TiC in molten Fe-Mn-C alloy is explained by constructing three-dimensional iron rich Fe-Mn-TiC phase diagram. In Fe-Mn-TiC composite, varying manganese content increases the Young's modulus, ultimate tensile strength, and percentage elongation.

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“…A MMNC of Mg (AZ91E) with Al 2 O 3 n (50 nm) was synthesized using a semisolid Rheocasting process [51]. The Mg ingots were placed in boron nitride coated mild steel crucible.…”

Section: Rheocasting Techniquementioning

confidence: 99%

Synthesis of Magnesium Based Nano-composites

Murugan

Nguyen²,

Gupta

2020

Magnesium - The Wonder Element for Engineering/Biomedical Applications

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Magnesium based nanocomposites are new lightweight and high-performance materials for potential applications in automotive, aerospace, space, electronics, sports and biomedical sectors primarily due to their lower density when compared to aluminum-based materials and steels. Synthesis of magnesiumbased materials is relatively challenging and accordingly this chapter explicitly provides an insight into various techniques hitherto devised/adopted by various researcher for synthesizing magnesium based nano-composites (MMNCs). Overall processing of MMNCs often includes combination of primary and secondary processing. Primary processing fundamentally leads to the initial formulation and creation of MMNC ingots by solid, semi-solid or liquid state processing routes. This is followed by secondary processing that includes plastic deformation or severe plastic deformation to alleviate inhomogeneity, clustering of particles and fabrication defects to enhance the properties of the MMNCs. This chapter provides an insight into different fabrication methodologies, their benefits and limitations for MMNCs.

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The Microstructure and Mechanical Properties of SiC Reinforced Magnesium Based Composites by Rheocasting Process

Cited by 49 publications

References 28 publications

Mechanical and fracture toughness behavior of TiO2-filled A384 metal alloy composites

Mechanical and fracture toughness behavior of TiO2-filled A384 metal alloy composites

Effect of Manganese on the Microstructure and TiC Precipitation in Hypoeutectoid Steel

Synthesis of Magnesium Based Nano-composites

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