Effect of Interface on Mechanical Properties of Ti/Al/Mg/Al/Ti Laminated Composites

Cao, Miao; Wang, Cuiju; Deng, Kun-kun; Nie, Kai-bo; Liang, Wei; Wu, Yucheng

doi:10.1590/1980-5373-mr-2019-0648

Cited by 8 publications

(2 citation statements)

References 41 publications

(61 reference statements)

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“…As the effect is small, it will not be analyzed in detail. Allowed (by symmetry) higher order terms include ∝ ẋ × ω ω ω, yielding the recently observed memory induced Magnus force 22 .…”

Section: Symmetriesmentioning

confidence: 75%

Memory-induced alignment of colloidal dumbbells

Kumar,

Caspers,

Ginot

et al. 2023

Preprint

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When a colloidal probe is forced through a viscoelastic fluid which is characterized by a long stress-relaxation time, the fluid is excited out of equilibrium. This is leading to a number of interesting effects including a non-trivial recoil of the probe when the driving force is removed. Here, we experimentally and theoretically investigate the transient recoil dynamics of non-spherical particles, i.e., colloidal dumbbells. In addition to a translational recoil of the dumbbells, we also find a pronounced angular reorientation which results from the relaxation of the surrounding fluid. Our findings are in good agreement with a Langevin description based on the symmetries of a director (dumbbell) as well as a microscopic bath-rod model. Remarkably, we find a frustrated state with amplified fluctuations when the dumbbell is oriented perpendicular to the direction of driving. Our results demonstrate the complex behavior of non-spherical objects within a relaxing environment which are of immediate interest for the motion of externally but also self-driven asymmetric objects in viscoelastic fluids.

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Section: Symmetriesmentioning

confidence: 75%

Memory-induced alignment of colloidal dumbbells

Kumar,

Caspers,

Ginot

et al. 2023

Preprint

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“…Cao et. al [14] studied the influences of interface morphology, diffusion layer and reaction product, constraint effect on the mechanical properties of the laminar metals composites (LMCs). The detailed conclusions were reported as follows:…”

Section: Introductionmentioning

confidence: 99%

Effect of Hot Rolling on the Intrinsic Properties of Aluminium-Titanium Bonded by PTFE/ C -Cyanoacrylate

Rabah

2021

Int. Res. J. multidiscip. Technovation

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The concern of this study shows the effect of hot rolling on the properties of a composite sheet prepared from aluminium bonded to titanium metals sandwiching PTFE (Du Pont)/graphite emulsion in perfluoro kerosene. The metals were soaked in hot oxygenated water and dried at 80 °C for 5 - 10 minutes to create a thin film of oxide. The metals were bonded with cyanoacrylate blended to the polymer emulsion that applied to the oxidized surface of the clean metals. Two coated surfaces sandwich the polytetrafluoroethylene (PTFE)/graphite emulsion followed by ‎hot-rolling. The rolling process was matched at 500- 560 °C (≈ 150 °C, over the melting point of the PTFE) under a pressure of 150-200 KPa. The obtained composite sheet was annealed at 550 °C to remove any residual stresses. Results revealed that upon cooling, the mix microphase would separate with the OH radicals on the metal surface and the CF displaced away. The temperature and time of cyanoacrylate application enhanced the extent of adhesion to create a homogeneous composite metal sheet. The effect of the hot rolling conditions was ascribed to the PTFE underactivity and incompatibility. Rolling imparts squeezing of the metals and changes the intrinsic properties. Linear thermal expansion coefficient of the composite sheet confirms partial diffusion of the soft metal in the harder one across the adhesive. The applied technique deforms the PTFE particles without inhibiting the adhesion strength of the cyanoacrylate. The prepared sheet has physical properties that would be suitable for bailiwick and structural ‎application.

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Material Flow Behavior and Microstructure Evolution During Direct Hot‐Press Bonding of Ti/Mg Laminates with Interlocking Structure

et al. 2021

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With widespread applications of electronic devices, the injuries by the complex electromagnetic environment to the electronic device industry and human health are of extensive concern, and this also promotes the exploitation of electromagneticshielding and absorbing materials. In recent years, a kind of new composite material based on the carbon framework and oxide nanoparticles exhibits excellence in the aspect of electromagnetic absorbing. [1][2][3][4] However, its formability and mechanical properties need improvement. For comparison, magnesium alloy, as a type of excellent electromagnetic-shielding material, is characterized by low density and good mechanical properties; thus, it has great application prospects in the electronic device industry. [5] However, its practical application is limited by poor corrosion resistance. [6] It is an effective method to improve the practical performance of magnesium alloys by cladding anticorrosion metals such as steel, [7] aluminum, [8] and titanium [9] to form magnesium-based laminates. Among them, Ti/ Mg laminates, which possesses lower density compared with steel/Mg laminates and higher strength than Al/Mg laminates, have great potential to be utilized in the aerospace industry.At present, the preparation methods of Ti/Mg laminates mainly include explosive welding, [10] rolling, [11] and hot pressing. [12] Explosive welding can achieve metallurgical bonding of the interface in a short time under high pressure and high temperature. However, product quality and operation safety restrict the mass application of this method. Rolling is more stable compared with explosive welding. However, large reduction is usually required to achieve reliable bonding for Ti/Mg laminates. Based on the difference between the deformation ability of titanium and magnesium, the shape and dimension of as-rolled laminates are hard to guarantee; in addition, some defects like edge cracks are easy to form in magnesium in the process of rolling. Hot pressing is widely perceived as a stable and safe way with a simple process and low cost. [13] The existing hot-pressing process can be divided into two types including hot-press diffusing and direct hot pressing. Hot-press diffusing is characterized by reliable bonding, which is achieved by elements diffusion activated thermally with the assistance of limited pressure. [14] However, this process may last for hours, which severely restricts the efficiency of this method. Direct hot pressing, by comparison, is much more efficient due to its simplified process. Interfacial bonding is achieved by pressing with large load in the condition of atmosphere. [15] However, that also increases the problem of bonding reliability, especially for immiscible metal couple like Ti/Mg. Thus, how to prepare high-performance Ti/Mg laminates with efficiency has become the bottleneck problem, restricting its mass industrial application, which urgently has to be investigated.For Ti/Mg laminates, it is hard to acquire reliable metallurgical bonding between titanium and magnesi...

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Effect of Interface on Mechanical Properties of Ti/Al/Mg/Al/Ti Laminated Composites

Cited by 8 publications

References 41 publications

Memory-induced alignment of colloidal dumbbells

Memory-induced alignment of colloidal dumbbells

Effect of Hot Rolling on the Intrinsic Properties of Aluminium-Titanium Bonded by PTFE/ C -Cyanoacrylate

Material Flow Behavior and Microstructure Evolution During Direct Hot‐Press Bonding of Ti/Mg Laminates with Interlocking Structure

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