On the preparation and mechanical properties of in situ small-sized TiB2/Al-4.5Cu composites via ultrasound assisted RD method

Li, Jun; Liu, Zhiwei; Dong, Zhiwu; Cheng, Xiaoli; Zheng, Qiaoling; Li, Jing; Zuo, Sha; Huang, Zhifu; Gao, Yimin; Xing, Jianfeng; Han, Qingyou

doi:10.1016/j.jallcom.2018.06.303

Cited by 74 publications

(14 citation statements)

References 30 publications

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“…where

is the strengthening coefficient (1.25 for Al [48] , [49] ),

is the difference between the CTEs of the matrix and the reinforced particles, and the CTE values of the Al matrix and TiB 2 particle are 25.2 × 10 -6 /K [46] and 7.8 × 10 -6 /K [50] , respectively, so

= 17.4 × 10 -6 /K;

is the difference between the pouring temperature and the test temperature [51] , the pouring temperature is 993 K, and the test temperature is 298 K, so

= 695 K; b is the Burger vector;

is the average size of the reinforcing particles, about 200 nm in the composite with UT for 180 s.

is the volume fraction of the reinforcing particles, and the mass fraction of 2 % is converted into a volume fraction of 1.2 %.

is the shear modulus of the matrix, which can be calculated from the following formula [52] :

…”

Section: Discussionmentioning

confidence: 99%

“…where

is the elastic modulus of the matrix, obtained from tensile tests;

is the Poisson's ratio of the matrix [50] , [51] . Therefore,

can be calculated.…”

Section: Discussionmentioning

confidence: 99%

“…In general, the Orowan strengthening mechanism is effective only when the size of the reinforcing particles is less than 1 μm [51] . As shown in Fig.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Microstructural evolution and mechanical properties of TiB2/2195 composites fabricated by ultrasonic-assisted in-situ casting

Xie

Jiang²,

Li³

et al. 2022

Ultrasonics Sonochemistry

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“…where

is the strengthening coefficient (1.25 for Al [48] , [49] ),

= 17.4 × 10 -6 /K;

is the difference between the pouring temperature and the test temperature [51] , the pouring temperature is 993 K, and the test temperature is 298 K, so

= 695 K; b is the Burger vector;

is the average size of the reinforcing particles, about 200 nm in the composite with UT for 180 s.

is the volume fraction of the reinforcing particles, and the mass fraction of 2 % is converted into a volume fraction of 1.2 %.

is the shear modulus of the matrix, which can be calculated from the following formula [52] :

…”

Section: Discussionmentioning

confidence: 99%

“…where

is the elastic modulus of the matrix, obtained from tensile tests;

is the Poisson's ratio of the matrix [50] , [51] . Therefore,

can be calculated.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Microstructural evolution and mechanical properties of TiB2/2195 composites fabricated by ultrasonic-assisted in-situ casting

Xie

Jiang²,

Li³

et al. 2022

Ultrasonics Sonochemistry

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“…As a vital component of MMCs, the reinforcing phase should meet the following conditions: good mechanical and functional properties as well as fine chemical stability and affinity with the metal matrix. Traditional reinforcing phases are mainly composed of carbides [ 2 , 3 ], metal oxides [ 4 , 5 ], nitrides [ 6 , 7 ], borides [ 8 , 9 ], and so on. In recent years, novel kinds of reinforcing phases, such as fullerene, carbon nanotubes, and graphene, have attracted widespread attention.…”

Section: Introductionmentioning

confidence: 99%

Interfacial Strengthening of Graphene/Aluminum Composites through Point Defects: A First-Principles Study

Wang

2021

Nanomaterials

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The relationship between point defects and mechanical properties has not been fully understood yet from a theoretical perspective. This study systematically investigated how the Stone–Wales (SW) defect, the single vacancy (SV), and the double vacancy (DV) affect the mechanical properties of graphene/aluminum composites. The interfacial bonding energies containing the SW and DV defects were about twice that of the pristine graphene. Surprisingly, the interfacial bonding energy of the composites with single vacancy was almost four times that of without defect in graphene. These results indicate that point defects enhance the interfacial bonding strength significantly and thus improve the mechanical properties of graphene/aluminum composites, especially the SV defect. The differential charge density elucidates that the formation of strong Al–C covalent bonds at the defects is the most fundamental reason for improving the mechanical properties of graphene/aluminum composites. The theoretical research results show the defective graphene as the reinforcing phase is more promising to be used in the metal matrix composites, which will provide a novel design guideline for graphene reinforced metal matrix composites. Furthermore, the sp3-hybridized C dangling bonds increase the chemical activity of the SV graphene, making it possible for the SV graphene/aluminum composites to be used in the catalysis field.

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“…14,15 Mandal et al 16 described a suitable reaction time and temperature for avoiding the formation of an Al 3 Ti phase. Liu et al 17 emphasized the stirring of an aluminium melt after the completion of the exothermic reaction. This stirring action helps to break the TiB 2 particle cluster, thereby achieving a homogeneous particle distribution.…”

Section: Introductionmentioning

confidence: 99%

Multi-response optimization of electrochemical machining parameters in the micro-drilling of AA6061-TiB₂in situ composites using the Entropy–VIKOR method

Chandrasekhar

Prasad

2020

Proceedings of the Institution of Mechanical Engineers, Part B:

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This article describes the multi-response optimization of electrochemical machining operating parameters such as voltage, concentration of the electrolyte, and current to maximize the rate of material removal in addition to minimize the over cut and delamination at the same time in micro-drilling of AA6061-TiB2 in situ composite. A novel Entropy–VIKOR method is applied to handle such mutually conflicting responses. The weight of each response is computed from the entropy method, and VIKOR method is used to rank the various levels of parameters. This method yields the combination of 2 mol of electrolyte concentration, 16 V of applied voltage, and 4 A of current as optimal parameters to minimize the over cut and delamination in addition to maximize the rate of material removal at the same time. This optimal process-governing parameters satisfied the conditions for compromising solution such as acceptable advantage and acceptable stability condition. The response graph illustrates that, of the parameters investigated, electrolyte concentration has the greatest effect on the VIKOR index, followed by applied voltage and current. Scanning electron microscopic analysis illustrates that the radius of the hole is equal throughout the periphery, except for one instance of micro-delamination.

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On the preparation and mechanical properties of in situ small-sized TiB2/Al-4.5Cu composites via ultrasound assisted RD method

Cited by 74 publications

References 30 publications

Microstructural evolution and mechanical properties of TiB2/2195 composites fabricated by ultrasonic-assisted in-situ casting

Microstructural evolution and mechanical properties of TiB2/2195 composites fabricated by ultrasonic-assisted in-situ casting

Interfacial Strengthening of Graphene/Aluminum Composites through Point Defects: A First-Principles Study

Multi-response optimization of electrochemical machining parameters in the micro-drilling of AA6061-TiB₂in situ composites using the Entropy–VIKOR method

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On the preparation and mechanical properties of in situ small-sized TiB2/Al-4.5Cu composites via ultrasound assisted RD method

Cited by 74 publications

References 30 publications

Microstructural evolution and mechanical properties of TiB2/2195 composites fabricated by ultrasonic-assisted in-situ casting

Microstructural evolution and mechanical properties of TiB2/2195 composites fabricated by ultrasonic-assisted in-situ casting

Interfacial Strengthening of Graphene/Aluminum Composites through Point Defects: A First-Principles Study

Multi-response optimization of electrochemical machining parameters in the micro-drilling of AA6061-TiB2in situ composites using the Entropy–VIKOR method

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Product

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About

Multi-response optimization of electrochemical machining parameters in the micro-drilling of AA6061-TiB₂in situ composites using the Entropy–VIKOR method