Physical, Mechanical, and Tribological Attributes of Stir-Cast AZ91/SiCp Composite

Kumar, K. Suresh; Viswanath, Abhilash; Rajan, T.P.D.; Pillai, U.T.S.; Pai, B.C.

doi:10.1007/s40195-014-0045-3

Cited by 40 publications

(5 citation statements)

References 23 publications

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“…It can be seen that the AT81 alloy and the composites present typical cleavage fracture, which indicates brittle fracture. 2,27 With the increase of SiC particle contents, the fracture microstructures become more homogeneous in Fig. 5b and c, leading to the enhancement of the yield and compressive strength of the SiC p /AT81 composites.…”

Section: Resultsmentioning

confidence: 98%

“…The interest in developing SiC particles (SiC p ) reinforced magnesium metal matrix composites (MMCs) has increased substantially in recent years. [1][2][3] The SiC p reinforced magnesium MMCs exhibit more superiorities over monolithic magnesium and magnesium alloys, such as high elastic modulus, high strength, superior creep and wear resistances at elevated temperatures, and thus numerous studies have been made on SiC p reinforced magnesium MMCs. 4 Pure Mg, Mg-Al-Zn, Mg-Al-Si, Mg-Zn-Zr, Mg-Zn-Ca and Mg-Zn-Y systems are the most commonly used matrix materials in magnesium MMCs.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Microstructure and mechanical properties of SiC particles reinforced Mg–8Al–1Sn magnesium matrix composites fabricated by powder metallurgy

et al. 2015

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The new type of Mg-8Al-1Sn (AT81) magnesium matrix composites reinforced with different volume fractions (5, 10, 15, 20, 25 and 30 vol.-%) of SiC particles (average size of 10 mm) was fabricated by powder metallurgy. With the increasing volume fraction of SiC particles (SiC p ), the particles gradually show more homogeneous distribution. Compared with the AT81 alloy, the yield strength (YS) and ultimate compressive strength of the SiC p /AT81 composites are improved simultaneously. With the increasing SiC p from 0 to 30 vol.-%, the YS and ultimate compressive strength increase from 69 to 239 MPa and 286 to 385 MPa respectively, while the corresponding fracture strain (e) decreases from 19?3 to 4?8%. The improvement of the YS and ultimate compressive strength of the SiC p /AT81 composites benefits from the more homogeneous microstructure due to the increase in the SiC particles.

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Section: Resultsmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of SiC particles reinforced Mg–8Al–1Sn magnesium matrix composites fabricated by powder metallurgy

et al. 2015

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“…At a higher weight percentage of reinforcement, there is much possibility of segregation of reinforcement and less contact surface area between the matrix alloy and the reinforcement which resulted in a subsidence of hardness and compressive strength [31]. The other two reasons that may also be responsible for the decrement in the compressive strength of the composite, was caused by adding in different marble content: First, the effect of residual stress during the deformation process, and second, the failure of clustered submicron marble particles and presence of porosity and oxide layers during the casting process [32].…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Copper-Based Alloy (C93200) Composites Reinforced with Marble Dust Developed by Stir Casting under Vacuum Environment

et al. 2019

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Copper-based alloy (C93200) composites reinforced with a different weight percentage of marble dust particles (1.5, 3, 4.5, and 6 wt.%) were developed by stir casting method under vacuum environment. By using this type of reinforcement, it was possible to detect a suitable material for bearing applications. The manufactured material was characterized for its mechanical properties using a micro-hardness tester. A universal INSTRON-5967 machine was used to detect the yield and tensile strength. Further the hardness features were measured using a Walter Uhl model machine, whereby the wear characteristics were simulated under the pin-on-disc tribometer under different working conditions in ambient temperature (23 °C). Next, the preference selection index (PSI) technique that considers multi-criteria decision-making was proposed to validate which material was the best candidate. For the selection of material criteria, some specific material intrinsic properties—such as, density, void fraction, hardness resistance along with tensile, compressive, and flexural strength—were proposed and the surface characteristics linked to friction coefficients along wear properties. It was found that the novel composite material containing 4.5 wt.% of marble dust provided the best combination of properties and is a suitable candidate material for bearing applications.

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“…The wear rate of the composite is found to be decreased and wear resistance is increased as such SiCp reinforcement induces the hardness and strength to soft and ductile AZ91 magnesium matrix due to oxidation, delamination, and abrasion wear mechanisms [25]. K. K. Ajith Kumar [26] and Abhilash viswanath [27] also evaluated physical, mechanical, tribological and creep phenomenon of stir cast AZ91/SiCp composites.…”

Section: Silicon Carbide (Sic)mentioning

confidence: 99%

Recent studies on particulate reinforced AZ91 magnesium composites fabricated by Stir casting – A review

Matta

Koka

Devarakonda³

2020

Journal of Mechanical and Energy Engineering

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Magnesium Metal Matrix Composites (Mg MMC) have been the focus of consideration by many researchers for the past few years. Many applications of Mg MMCs were evolved in less span of time in the automotive and aerospace sector to capture the benefit of high strength to weight ratio along with improved corrosion resistance. However, the performance of these materials in critical conditions is significantly influenced by several factors including the fabrication methods used for processing the composites. Most of the papers addressed all the manufacturing strategies of Mg MMC but no paper was recognized as a dedicated source for magnesium composites prepared through stir casting process. Since stir casting is the least expensive and most common process in the preparation of composites, this paper reviews particulate based Mg MMCs fabricated with stir casting technology. AZ91 series alloys are considered as the matrix material while the effect of different particle reinforcements, sizes , weight fractions on mechanical and tribological responses are elaborated in support with micro structural examinations. Technical difficulties and latest innovations happened during the last decade in making Mg MMCs as high performance material are also presented.

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Physical, Mechanical, and Tribological Attributes of Stir-Cast AZ91/SiCp Composite

Cited by 40 publications

References 23 publications

Microstructure and mechanical properties of SiC particles reinforced Mg–8Al–1Sn magnesium matrix composites fabricated by powder metallurgy

Microstructure and mechanical properties of SiC particles reinforced Mg–8Al–1Sn magnesium matrix composites fabricated by powder metallurgy

Evaluation of Copper-Based Alloy (C93200) Composites Reinforced with Marble Dust Developed by Stir Casting under Vacuum Environment

Recent studies on particulate reinforced AZ91 magnesium composites fabricated by Stir casting – A review

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