In-situ development of ZrB2 particles and their effect on microstructure and mechanical properties of AA5052 metal-matrix composites

Kumar, Narendra; Gautam, Rakesh Kumar; Mohan, S.

doi:10.1016/j.matdes.2015.05.020

Cited by 130 publications

(50 citation statements)

References 49 publications

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“…Halide salts of K 2 ZrF 6 and KBF 4 were taken to obtain the required composite proportions of weight percentage as per the literature 14,15,16,25 mixed and pre-heated at the temperature of 250°C for 30 min to remove the moisture. The preweighed AA8011 matrix was melted in the graphite crucible by using electrical resistance furnace and it was maintained at 850°C to convert it to molten form.…”

Section: Fabrication Of Materialsmentioning

confidence: 99%

“…[14][15][16][17][18] The exothermic reactions that take place between molten form of aluminium and halide salts are shown in Equation (1), (2) and (3). After the completion of reaction, elements other than the ZrB 2 were evaporated or formed as slag was removed.…”

Section: Fabrication Of Materialsmentioning

confidence: 99%

“…13 The in-situ technique has an advantage over other techniques such as the economical, uniform distribution of reinforcements, grain refinements, clear interface, good interfacial bonding strength between the matrix and reinforcement without the need of a wetting agent and a high degree of thermal stability. [14][15][16][17][18] From the literature, it was found that AMC's are fabricated with many reinforcements such as SiC, TiC, Al 2 O 3 , TiB 2 , ZrB 2 , in the form of oxides, carbides, nitrides, borides, fly ash, etc. 4,14,19 Among the reinforcements, ZrB 2 is a promising candidate with its excellent properties, such as high melting point (>3000°C), high hardness, chemical inertness against molten metal, high thermal shock resistance, high wear resistance, excellent covalent bond, high corrosion resistance, better thermal and electrical conductivity, which is much needed in the aerospace applications.…”

Section: Introductionmentioning

confidence: 99%

“…[14][15][16][17][18] From the literature, it was found that AMC's are fabricated with many reinforcements such as SiC, TiC, Al 2 O 3 , TiB 2 , ZrB 2 , in the form of oxides, carbides, nitrides, borides, fly ash, etc. 4,14,19 Among the reinforcements, ZrB 2 is a promising candidate with its excellent properties, such as high melting point (>3000°C), high hardness, chemical inertness against molten metal, high thermal shock resistance, high wear resistance, excellent covalent bond, high corrosion resistance, better thermal and electrical conductivity, which is much needed in the aerospace applications. [14][15][16][17][18] Generally, reinforced aluminium composites show superior tribological properties compared to the unreinforced aluminium alloy.…”

Section: Introductionmentioning

confidence: 99%

“…4,14,19 Among the reinforcements, ZrB 2 is a promising candidate with its excellent properties, such as high melting point (>3000°C), high hardness, chemical inertness against molten metal, high thermal shock resistance, high wear resistance, excellent covalent bond, high corrosion resistance, better thermal and electrical conductivity, which is much needed in the aerospace applications. [14][15][16][17][18] Generally, reinforced aluminium composites show superior tribological properties compared to the unreinforced aluminium alloy. 4,19 The wear behaviour of aluminium matrix composites reinforced with multi-walled carbon nano tubes was synthesized through the powder metallurgy technique.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of tribological behavior of AA8011-ZrB2 in-situ cast-metal-matrix composites

Munivenkatappan¹,

Veeramani²,

Muthuk³

2018

Mater. Tehnol.

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Aluminium alloy 8011 matrix composites reinforced with different weight percentages of ZrB2 were successfully fabricated using an in-situ casting technique. X-ray diffraction and scanning electron microscopic analyses were performed to examine the presence and distribution of the reinforcements in the composites. Wear tests were performed with the weight percentage of the reinforcement, temperature, load, sliding velocity and sliding distance as the input parameters for the wear rate as response. D3 steel was used as the counterpart. The effects of various factors on the wear rate were analysed using analysis of variances. The optimal combination of the 1500-m sliding distance, 4 % of mass fractions of ZrB2 reinforcement, 200°C temperature, 10 N load and 2 m/s sliding velocity was found to give the minimum wear rate. Keywords: in-situ stir casting, aluminium-matrix composites, wear behavior, design of experiments V~lanku avtorji opisujejo uspe{no izdelavo kompozitov z matrico iz Al zlitine 8011 in oja~ano z razli~no vsebnostjo ZrB2. S pomo~jo spektroskopije uklona rentgenskih`arkov (XRD) in vrsti~ne elektronske mikroskopije (SEM) so dolo~ili dele`in porazdelitev oja~itvene faze v izdelanih kompozitih. Izvedli so tudi teste njihove obrabe v odvisnosti od temperature, obremenitve, hitrosti in razdalje drsenja. Kot protidrsni element so uporabili orodno jeklo D3. Z analizo varianc so dolo~ili vpliv razli~nih faktorjev na hitrost obrabe. Ugotovili so, da je dose`ena najmanj{a hitrost obrabe, ko so razdalja drsenja 1500 m, masni dele`ZrB2 4 %, temperatura 200°C, obremenitev 10 N in hitrost drsenja 2 m/s. Klju~ne besede: in-situ litje s preme{avanjem taline, kompoziti z matrico na osnovi Al zlitine, obstojnost proti obrabi, na~rtovanje eksperimentov

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Section: Fabrication Of Materialsmentioning

confidence: 99%

Section: Fabrication Of Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigation of tribological behavior of AA8011-ZrB2 in-situ cast-metal-matrix composites

Munivenkatappan¹,

Veeramani²,

Muthuk³

2018

Mater. Tehnol.

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In Situ Hybrid Aluminum Matrix Composites: A Review of Phase Transformations and Mechanical Aspects

Azarniya

Abdollah-zadeh

et al. 2019

Adv Eng Mater

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The growing industrial needs for the development of strong load‐bearing materials by powder metallurgy and casting technologies has led to recent progress in the synthesis of in situ hybrid aluminium matrix composites (AMCs). Unlike their conventional counterparts, this class of engineering materials and their physicomechanical properties are sparsely investigated with no satisfactorily systematic approach and are not reviewed up to now. This is why providing an overview summarizing the formation mechanisms of in situ phases and mechanical properties of hybrid AMCs can systematically guide the research path in this field. The present review strives to categorize hybrid AMCs based on their dominant in situ formed reinforcements and draw a comparison between different fabrication methods and used starting materials. Finally, the present challenges and potential solutions are addressed both from scientific and technological aspects.

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Synthesis and wear characterization of Al7075/molybdenum disulfide/zirconium diboride hybrid composites

Dubey,

Kumar,

Mohan

2024

Materialwissenschaft Werkst

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The manuscript presents the synthesis and dry sliding wear performance of Al7075 alloy‐based composites. Five compositions namely Al7075 alloy, Al7075+3 vol % molybdenum disulfide, Al7075+3 vol % molybdenum disulfide+3 vol % zirconium diboride, Al7075+3 vol % molybdenum disulfide+6 vol % zirconium diboride and Al7075+3 vol % molybdenum disulfide+9 vol % zirconium diboride were stir cast and characterized for hardness, x‐ray diffraction, microstructure, and tribological properties. In‐situ formed zirconium diboride particles increase the hardness of Al7075 alloy whereas molybdenum disulfide shows the opposite trend due to its self‐lubricating nature. X‐ray diffraction analysis identifies subsequent phase particles in the matrix while microstructural images exhibit the dispersion and morphology of reinforcement particles. The wear tests and friction coefficient were analyzed with variations of sliding velocity, normal load, sliding distance, and compositions. Further, the obtained wear results were also correlated with microstructure and wear surface topography. Al7075+3 vol % molybdenum disulfide composite shows the lowest coefficient of friction because of its self‐lubricating nature. Al7075+3 vol % molybdenum disulfide+9 vol % zirconium diboride hybrid composite exhibits the lowest wear rate at high velocity as well as at high load and can be potentially used in manufacturing and tribological applications. Moreover, the use of this material may lead to the minimum requirement of external toxic lubricants that make it cost‐effective and environmentally sustainable.

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In-situ development of ZrB2 particles and their effect on microstructure and mechanical properties of AA5052 metal-matrix composites

Cited by 130 publications

References 49 publications

Investigation of tribological behavior of AA8011-ZrB2 in-situ cast-metal-matrix composites

Investigation of tribological behavior of AA8011-ZrB2 in-situ cast-metal-matrix composites

In Situ Hybrid Aluminum Matrix Composites: A Review of Phase Transformations and Mechanical Aspects

Synthesis and wear characterization of Al7075/molybdenum disulfide/zirconium diboride hybrid composites

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