Microstructure and mechanical behavior of AA2024 aluminum matrix composites reinforced with in situ synthesized ZrB2 particles

Muralidharan, N. P.; Chockalingam, K.; Dinaharan, I.; Kalaiselvan, K.

doi:10.1016/j.jallcom.2017.11.371

Cited by 86 publications

(19 citation statements)

References 30 publications

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“…Therefore, the microhardness and UTS improves in the welds prepared with TiCp/Al-5Mg composite fillers. Furthermore, thermal strains tend to form around TiC particles because of the difference in thermal expansion coefficients of TiC particles and the aluminum matrix, which also increases the microhardness value and UTS of the weld [25,26].…”

Section: Resultsmentioning

confidence: 99%

Microstructure, Corrosion and Mechanical Properties of TiC Particles/Al-5Mg Composite Fillers for Tungsten Arc Welding of 5083 Aluminum Alloy

Huang

Wang

et al. 2019

Materials

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A semi-solid stir casting mixed multi-pass rolling process was successfully employed to manufacture TiCp/Al-5Mg composite filler wires with different contents of TiC particles. The 5083-H116 aluminum alloys were joined by tungsten inert gas (TIG) using TiCp/Al-5Mg composite weld wires. The microstructure, mechanical properties, fractography and corrosion behavior of the welds were evaluated. The results revealed that TiC particles were distributed in the welds uniformly and effectively refined the primary α-Al grains. The hardness and tensile strength of the welds were improved by increasing the TiC particle content, which could be attributed to the homogeneous distribution of TiC particles and the microstructure in the weld joints. Potentiodynamic polarization testing revealed that the corrosion resistance of the welds also increased with the addition of TiC particle contents. In addition, the stress corrosion cracking (SCC) susceptibility of the welds decreased as micro-TiC particles were introduced into the welds. The electronic structure of the Al/TiC interface was investigated by first principle calculation. The calculation showed that valence electrons tended to be localized in the region of the TiC-Al interface, corresponding to an addition of the overall work function, which hinders the participation of electrons in the composite in corrosion reactions.

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Section: Resultsmentioning

confidence: 99%

Microstructure, Corrosion and Mechanical Properties of TiC Particles/Al-5Mg Composite Fillers for Tungsten Arc Welding of 5083 Aluminum Alloy

Huang

Wang

et al. 2019

Materials

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“…SiC was used as primary reinforcement as it possesses high compression strength (3900 MPa), higher hardness (280 BHN) and high melting point (2730 0 C) [18]. The existence of harder ceramic reinforcements and the presence of higher melting temperature (740 0 C) makes kaoline clay as the suitable secondary reinforcement in this study [19,20]. The sequence of processing steps followed during the fabrication of composite specimens was shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

Tribological Investigation of Self-Lubricated Al-SiC-Kaoline Hybrid Composite Under Dry, Oil and Nanofluids Lubricating Conditions Fabricated Through Spark Plasma Sintering Technique.

Vavilada

Deoghare

2021

Preprint

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In this present study Al-10% SiC- X % Kaoline (X= 0, 2, 4, 6, 8) HMMC synthesized by spark plasma sintering technique. The fabricated HMMC samples corresponding to maximum compression strength was subjected to tribological investigation under dry, oil and nanofluids lubricating conditions. Nanofluid lubricants were developed by incorporating SiC nanoparticles with weight percentages of 1 wt%, 1.5 wt% and 2 wt% into the soluble oil. The thermal conductivity was found to be increased with increasing the wt % of SiC nanoparticles and the maximum thermal conductivity of 0.771 W/m.K was obtained for the nanofluids with 2 wt% SiC nanofluids. Sliding wear test was conducted on the pin-on-disc tribometer at 40 N load and sliding speed of 1500 r.p.m for a sliding of 180 s. Results reveal that there was a significant effect of the lubricating conditions (dry, oil and nanofluids) on the wear and C.O.F of the HMMC pin surface. The minimum wear of 119 microns and minimum C.O.F of 0.11 was obtained for nanofluid with 2 wt% SiC nanofluid lubricating conditions. SEM analysis of worn surface under dry and soluble oil lubricating conditions reveal the presence of microcracks and delaminations wear. However, worn surface with smooth grooves and absence of microcracks was identified under nanofluid lubricating conditions.

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“…It could improve the load bearing capacity of the composites. 5,14 Moreover, the Al matrix-ZrB 2 particle interface plays a vital role in deciding the mechanical properties of the composites. These findings agree with earlier studies by several researchers.…”

Section: Sem and Edax Analysis Of Aa6082 Alloy And Aa6082/zrb 2 Compomentioning

confidence: 99%

“…Also, ZrB 2 does not react with molten aluminium to form reaction products at the interface of the matrix and reinforcement. [12][13][14] The fabrication of AA6082-alloy-based AMCs was reported in some literature as presented here. [15][16][17][18] Pardeep Sharma et al 15 synthesized AA6082/Gr AMC by the stir casting technique and evaluated the mechanical and microstructure characteristics of the aluminium-matrix composites.…”

Section: Introductionmentioning

confidence: 99%

Influence of ZrB2 on the microstructural characteristics of AA6082/ZrB2 composites

Manikandan¹,

Omkumar²,

Mohanavel³

2019

Mater. Tehnol.

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In a recent scenario, particulate-reinforced aluminium-matrix composites (AMCs) are used for plenty of applications in aerospace, non-structural, structural, transportation and automotive industries. This study concentrates on the manufacturing of AA6082/ZrB2 aluminium-matrix composites (AMCs) using a liquid metallurgy process. The zirconium diboride particles of three different weight percentage, i.e., (0, 3, 6 and 9) %, are reinforced with aluminium alloy (AA6082) using the stir casting technique. Hardness, tensile and compression tests were conducted to evaluate the mechanical behaviour. The microstructures of the composites were examined using a scanning electron microscope (SEM). The SEM microphotographs proved the successful dispersion of ZrB2 particles into the aluminium matrix. The tensile fracture surface of the prepared composites and the plain aluminium were examined with the SEM to understand the tensile fracture mechanism. Tensile fracture morphology reveals different modes of fractures, like brittle and ductile. The unreinforced AA6082 plain matrix alloys are subjected to a ductile mode of fracture, but with an increase in zirconium diboride the mode of failure gradually transforms to brittle fracture. The mechanical properties of the composites are improved after the dispersion of ZrB2 particles. A tremendous improvement in the mechanical properties of the AMCs was found for 9 w/% ZrB2 particles in the matrix.

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Microstructure and mechanical behavior of AA2024 aluminum matrix composites reinforced with in situ synthesized ZrB2 particles

Cited by 86 publications

References 30 publications

Microstructure, Corrosion and Mechanical Properties of TiC Particles/Al-5Mg Composite Fillers for Tungsten Arc Welding of 5083 Aluminum Alloy

Microstructure, Corrosion and Mechanical Properties of TiC Particles/Al-5Mg Composite Fillers for Tungsten Arc Welding of 5083 Aluminum Alloy

Tribological Investigation of Self-Lubricated Al-SiC-Kaoline Hybrid Composite Under Dry, Oil and Nanofluids Lubricating Conditions Fabricated Through Spark Plasma Sintering Technique.

Influence of ZrB2 on the microstructural characteristics of AA6082/ZrB2 composites

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