Browsing by Subject "Microstructure"
Now showing items 1-20 of 32
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A comparative study of structural and mechanical properties of Al-Cu composites prepared by vacuum and microwave sintering techniques
( Elsevier Editora Ltda , 2018 , Article)In this paper, the aluminum metal matrix composite reinforced with copper particulates (3, 6 and 9 vol.%) were fabricated by high energy ball milling, followed by vacuum sintering (VS) and microwave sintering techniques ... -
Achieve high ductility and strength in an Al-Mg alloy by severe plastic deformation combined with inter-pass annealing
( Elsevier B.V. , 2014 , Article)Metallic materials processed by severe plastic deformation generally possess very high strength but a rather low uniform elongation, usually <5%. In the present Al-7Mg alloy processed by room temperature equal channel ... -
Brain Microstructural Changes Support Cognitive Deficits in Normal Children Born to HIVinfected Mothers
(2018 , Conference Proceedings)Synopsis In the current study, we evaluated the brain integrity [by mapping the fractional anisotropy (FA) and mean diffusivity (MD)] and neurocognitive performance (NP) in normal children (NCI) born to HIV-infected ... -
Characterization of biogenic hydroxyapatite derived from animal bones for biomedical applications
( Elsevier Ltd , 2018 , Article)© 2018 Elsevier Ltd and Techna Group S.r.l. In this work, the viability of producing biogenic hydroxyapatite from bio-waste animal bones, namely bovine (cow), caprine (goat) and galline (chicken), through a heat treatment ... -
Deep drawability and drawing behaviour of AZ31 alloy sheets with different initial texture
( Elsevier Ltd , 2014 , Article)Repeated unidirectional bending (RUB) process was carried out to improve the texture of AZ31 alloy sheets. Compared to the as-received sheet with a strong basal texture, the RUB processed sheet with a weaker basal texture ... -
Effect of copper-nickel interlayer thickness on laser welding-brazing of Mg/Ti alloy
( Elsevier Ltd , 2019 , Article)Dissimilar lap joining of AZ31B Mg alloy to Cu-Ni coated Ti-6Al-4V was carried out by laser welding-brazing method. The effect of Cu and Ni contents on interfacial reaction and joint fracture load were analyzed. For the ... -
Effect of glass on magnetic properties of microwave-processed MgCuZn nano ferrites
( Springer International Publishing , 2017 , Article)Lately ferrites find applications as multilayer chip inductor (MLCI) cores. During the MLCI fabrication, the core has to be sintered with an internal electrode like silver. The sintering temperature of ferrites can be ... -
Effect of hot extrusion and T6 heat treatment on microstructure and mechanical properties of Al-10Zn-3.5Mg-2.5Cu nanocomposite reinforced with graphene nanoplatelets
( Elsevier Ltd , 2018 , Article)Al-10Zn-3.5Mg-2.5Cu/graphene nanocomposites were developed by a combination of liquid metallurgy and hot extrusion techniques. The effect of varying graphene content (0.1%, 0.3%, 0.7% and 1.0%) on microstructure and ... -
Effect of multi-pass friction stir processing on the microstructure, mechanical and wear properties of AA5083/ZrO2 nanocomposites
( Elsevier Ltd , 2017 , Article)In this study, multi-pass friction stir processing using zirconia nanoparticles was performed on AA5083 sheets to fabricate surface nanocomposites. Effect of using different number of passes on the microstructure, ... -
Effect of self-healing calcium nitrate microcapsules on concrete properties
( National Research Council , 2016 , Article)Self-healing concrete with microencapsulated calcium nitrate was investigated. The compressive strength of concrete admixed with microcapsules (as a percentage of the weight of the cement) was tested and compared with that ... -
Effect of Silicon Nitride and Graphene Nanoplatelets on the Properties of Aluminum Metal Matrix Composites
( Qatar University Press , 2021 , Poster)This research work aims at investigating the influence of a fixed content of silicon nitride (Si3N4) and varied contents of graphene nanoplatelets (GNPs) on the physical and mechanical properties of Al-Si3N4-GNPs composites. ... -
Effect of silicon nitride and graphene nanoplatelets on the properties of aluminum metal matrix composites
( MDPI AG , 2021 , Article)This research work aims at investigating the influence of a fixed content of silicon nitride (Si3N4) and varied contents of graphene nanoplatelets (GNPs) on the physical (density, structural, morphological) and mechanical ... -
Enhancing Tensile and Compressive Strength of AZ41 Magnesium Alloy by Adding Nano-Sized Al2O3
( John Wiley & Sons, Inc. , 2014 , Book chapter) -
Humidity sensor based on electrospun MEH-PPV:PVP microstructured composite
( Royal Society of Chemistry , 2016 , Article)The present study demonstrates a solution-processed humidity sensor based on poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene]:polyvinylpyrrolidone (MEH-PPV:PVP) organic microstructured composite thin film. The ... -
Hybrid effect of carbon nanotubes and polypropylene microfibers on fire resistance, thermal characteristics and microstructure of cementitious composites
( Elsevier , 2020 , Article)The current study experimentally investigates the hybrid effect of carbon nanotubes (CNTs) and polypropylene (PP) microfibers on fire resistance and thermal characteristics of cementitious composites. Cement mortar with ... -
Impact Toughness Enhancement of Melt Treated Al-Si-Mg Cast Alloy
( John Wiley & Sons, Inc. , 2012 , Book chapter) -
Industrial waste utilization of carbon dust in sustainable cementitious composites production
( Multidisciplinary Digital Publishing Institute (MDPI) , 2020 , Article)This paper experimentally investigates the effect of utilization of carbon dust generated as an industrial waste from aluminum factories in cementitious composites production. Carbon dust is collected, characterized, and ... -
Influence of carbon nanotubes on phase composition, thermal and post-heating behavior of cementitious composites
( Multidisciplinary Digital Publishing Institute (MDPI) , 2021 , Article)This paper experimentally investigates the influence of carbon nanotubes (CNTs) on phase composition, microstructure deterioration, thermal behavior, and residual mechanical strengths of cementitious composites exposed to ... -
Influence of electrodeposited Cu-Ni layer on interfacial reaction and mechanical properties of laser welded-brazed Mg/Ti lap joints
( Elsevier , 2019 , Article)A fiber laser welding-brazing procedure has been developed for joining AZ31B magnesium alloy to Cu-Ni coated Ti-6Al-4V titanium sheet using AZ92D filler wire. The effect of the interlayer arrangements (AZ31B/Ni-Cu/Ti-6Al-4V ... -
Mechanical Performance and Thermo-Physical Properties of Cement Mortar Incorporating Hybrid Slags
( Qatar Univesrity Press , 2020 , Conference Paper)Owing to the growing environmental pressure to reduce waste and pollution, the effective utilization of industrial solid wastes in construction applications has gained notable attention. This study investigates the mechanical ...