Development of Al-5Cu/B4C composites with low coefficient of thermal expansion for automotive application

Поздняков, А. В.; Lotfy, Ahmed; Qadir, Awais; Shalaby, Essam A.M.; Хомутов, М. Г.; Churyumov, A. Yu.; Zolotorevskiy, V. S.

doi:10.1016/j.msea.2017.01.075

Cited by 54 publications

(13 citation statements)

References 22 publications

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“…It was due to the superior bonding between both the constituents (particles and matrix) of composite. [69] produced AMCs having Al-5Cu alloy as matrix material and 2, 5 and 7 wt.% of B 4 Cparticles as reinforcement. Fabrication of composite was performed by using both stir casting and squeeze casting techniques.…”

Section: On Fabrication Of Aluminium Alloyed Compositesmentioning

confidence: 99%

Mechanical and Tribological overview of ceramic particulates reinforced aluminium alloy composites

Bhaskar

Kumar

Patnaik

2019

Reviews on Advanced Materials Science

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This review manuscript highlights the effects of various ceramic particulates on different aspects like tribo-logical (sliding wear), mechanical and thermal behaviour etc. of aluminium alloy composites, across various operating parameters like normal load (N), sliding velocity (m/s), sliding distance (m), temperature (°C), reinforcement weight percentage. It also discusses different fabrication techniques of such composites as reported by various scholars. Such advanced alloyed-composites find frequent applications in automotives, military, marine, structural, etc. applications, where tribo-logical phenomenon plays a dominant role. The material scientists world-wide are actively engage in improving life of such components by enhancing their mechanical, physical, chemical etc. properties along with improvement in wear resistance in a cost-effective manner. This overall enhances the working efficiency of the component in required applications. Single or binary or hybrid ceramic reinforcement with varying content is explored by scholars and has ample scope of further exploration. It has been concluded from the literature review that ceramic reinforcement lead to significant enhancement in mechanical, tribological and thermal characteristics of Al alloy based MMCs. Further, the micro-sized ceramic particulates increase the interfacial bond strength between the matrix-reinforcement that enhances effective load transfer and sustain it at various tribological operating parameters, that further validated by surface morphology studies.

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Section: On Fabrication Of Aluminium Alloyed Compositesmentioning

confidence: 99%

Mechanical and Tribological overview of ceramic particulates reinforced aluminium alloy composites

Bhaskar

Kumar

Patnaik

2019

Reviews on Advanced Materials Science

View full text Add to dashboard Cite

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“…This combination exploits the properties of both metal ( eg , thermally and electrically conductive, high strength/density ratio and toughness, low hardness) and ceramic ( eg , thermally and electrically insulating or semiconducting, low strength and toughness, high hardness) . Accordingly, Al‐ceramic joints are of great interest for a range of applications: Al‐SiO 2 , Al‐SiC, and Al‐Si 3 N 4 joints are used in integrated circuits for the current generation of cell phones and computers. Al‐Al 6 Si 2 O 13 , Al‐MgO, Al‐SiC, and Al‐B 4 C joints are used in high‐toughness composites for automobiles and spacecraft. Al alloys are used to join Si 3 N 4 to itself and to other metals in automobile components. …”

Section: Introductionmentioning

confidence: 99%

“…The former is often manifested as, for example, line defects arising from lattice mismatch and the latter usually results in the formation of new phases arising from changes in chemical gradients . The reaction products may be beneficial for the properties of systems such as Al‐Al 6 Si 2 O 13 and Al‐MgO, but they also may be detrimental, as in the cases of Al‐SiC and Al‐B 4 C . Hence, the resultant properties of the composite materials depend significantly on the physicochemical nature of the metal‐ceramic interface …”

Section: Introductionmentioning

confidence: 99%

Ionic interdiffusion as interaction mechanism between Al and Si₃N₄

et al. 2019

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Al‐Si3N4 couples were heat‐treated at 850‐1150°C for 250 hours. The thickness of the interacted area was measured by scanning electron microscopy (SEM) and scanning/transmission electron microscopy (TEM/STEM). The interaction rate increases exponentially with inverse temperature, with an activation energy of 194.23 kJ/mol and diffusion pre‐coefficient of 5 × 10−9 m2/s, indicating that the interaction is diffusion‐dependent. As the results showed, the interfacial area is comprised of Al alloy channels, Si precipitates, and AlN grains. Al‐Si transfer through the solid solution (Si3‐xAlxN4‐y) at the interface of Al alloy and β‐Si3N4 grains controls the kinetic of the interaction. When concentration of Al in solid solution exceeds a certain amount, it undergoes a topotactic phase transformation to form Al1‐xSixN1+y (viz., AlN). Next, the Al1‐xSixN1+y grains detach from the β‐Si3N4 grains and subsequently new Al‐Si3N4 interfaces are established. These interfaces repeat the interaction process, continuing until all the reactant is depleted. Thus, the interaction kinetics consist of a sequence of associated parabolic stages, precluding the observation of parabolic kinetics.

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“…Many kinds of technologies have been adopted to solve the problem of being lightweight, having a high level of strength and high ductility of ceramic/Al composites, such as matrix modification [ 10 , 11 ], interfaces modification [ 12 ] and improvement of the fabrication method [ 1 , 13 , 14 ]. A second metal was used to add into material systems, which formed an intermetallic compound of Al-Metal.…”

Section: Introductionmentioning

confidence: 99%

Study on the Mechanical Properties of Bionic Coupling Layered B4C/5083Al Composite Materials

et al. 2018

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Based on microstructure characteristics of Meretrix lusoria shell and Rapana venosa shell, bionic coupling layered B4C/5083Al composites with different layered structures and hard/soft combination models were fabricated via hot pressed sintering. The simplified bionic coupling models with hard and soft layers were similar to layered structure and hardness tendency of shells, guiding the bionic design and fabrication. B4C/5083Al composites with various B4C contents and pure 5083Al were treated as hard and soft layers, respectively. Hot pressed sintering maintained the designed bionic structure and enhanced high bonding strength between ceramics and matrix. Compared with B4C/5083Al composites, bionic layered composites exhibited high mechanical properties including flexural strength, fracture toughness, compressive strength and impact toughness. The hard layers absorbed applied loads in the form of intergranular fracture. Besides connection role, soft layers restrained slabbing phenomenon and reset extension direction of cracks among layers. The coupling functions of bionic composites proved the feasibility and practicability of bionic fabrication, providing a new method for improvement of ceramic/Al composite with properties of being lightweight and high mechanical strength.

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Development of Al-5Cu/B4C composites with low coefficient of thermal expansion for automotive application

Cited by 54 publications

References 22 publications

Mechanical and Tribological overview of ceramic particulates reinforced aluminium alloy composites

Mechanical and Tribological overview of ceramic particulates reinforced aluminium alloy composites

Ionic interdiffusion as interaction mechanism between Al and Si₃N₄

Study on the Mechanical Properties of Bionic Coupling Layered B4C/5083Al Composite Materials

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Development of Al-5Cu/B4C composites with low coefficient of thermal expansion for automotive application

Cited by 54 publications

References 22 publications

Mechanical and Tribological overview of ceramic particulates reinforced aluminium alloy composites

Mechanical and Tribological overview of ceramic particulates reinforced aluminium alloy composites

Ionic interdiffusion as interaction mechanism between Al and Si3N4

Study on the Mechanical Properties of Bionic Coupling Layered B4C/5083Al Composite Materials

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Ionic interdiffusion as interaction mechanism between Al and Si₃N₄