Influence of High Pulsed Magnetic Field on the Dislocations and Mechanical Properties of Al2O3/Al Composites

Cheng, Jiang-Feng; Li, Gui-Rong; Wang, Hongming; Li, Peisi; Li, Chaoqun

doi:10.1007/s11665-018-3191-3

Cited by 13 publications

(2 citation statements)

References 26 publications

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“…Synchronous enhancements in strength and ductility were obtained in GNP/7075Al composites (T6). A comparison of the ultimate tensile strength and elongation of GNP/7075Al composite fabricated in the present study and previous reports in Figure 7b [28][29][30][31][32][33][34][35][36][37]. It can be concluded that the GNP/7075Al composite exhibit high strength and good ductility compared with previously developed aluminum matrix composites.…”

Section: Mechanical Propertiessupporting

confidence: 76%

Effects of Graphene Nanoplates on the Mechanical Behavior and Strengthening Mechanism of 7075Al Alloy

et al. 2020

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7075Al alloy is the preferred material for lightweight automotive applications, but the existing problem is that it is difficult to combine high strength and high toughness. This paper presents our research aimed at obtaining high strength and high toughness materials by adding a nano-phase to realize microstructure refinement. Graphene nanoplates (GNP)/7075Al composites and 7075Al alloy were prepared by a stirring casting method in the present study. In comparison to 7075Al, the tensile strength of GNP/7075Al composites was increased from 572 MPa to 632 MPa while maintaining good uniform elongation of 8% to 10%. The increased strength behavior of GNP/7075Al composites while maintaining the plasticity is discussed in terms of grain refinement and dislocation evolution by analyzing the composite microstructure and quantitatively analyzing the contributions of grain boundary strengthening, solid solution strengthening, precipitation strengthening and dislocation strengthening. GNP’s strengthening of GNP/7075Al composites is mainly attributed to the refinement of grain size and the increase of dislocation density.

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Section: Mechanical Propertiessupporting

confidence: 76%

Effects of Graphene Nanoplates on the Mechanical Behavior and Strengthening Mechanism of 7075Al Alloy

et al. 2020

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“…This stress is greater than the P-N forces acting on dislocations and the elastic strain forces bending dislocations, therefor the dislocations can be driven by magnetic fields [117]. Some considered that the magnetic field which transforms the spin state of the radical pairs from the ground singlet (S) state to the excited triplet (T) state, prompt the dislocation depinning from the paramagnetic barrier, and then internal stress and thermal potential energy in material advance the dislocation motion [12,[121][122][123][124]. While others argued that when there is internal stress in the material, the dislocation in the local region can be facilitated by the interaction of internal stress and magnetostriction during MT [125].…”

Section: Effects Of Mt On Dislocations Evolutionmentioning

confidence: 99%

Effects of Electric and Magnetic Treatments on Microstructures of Solid Metals: A Review

Song,

Wu,

et al. 2023

Chin. J. Mech. Eng.

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An external electric or magnetic field can transfer high-intensity energy directly to the electronic scale of materials, and change the spin, energy level arrangement and trajectory of electrons. These changes produce tremendous and profound impacts on the microstructure and mechanical properties of metal materials, which may be impossible with traditional technologies. This paper reviews the effects of electric or magnetic field on the microstructures of solid metals including phase transformation, precipitation, recrystallization, dislocations and so on. Based on the existing research results, the mechanisms of these effects have been discussed. Additionally, some typical applications of electric and magnetic treatments on solid metals have been described and the challenges in this field have also been discussed.

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Review: recent progress in aluminum matrix composites reinforced by in situ oxide ceramics

Rong,

Zhao,

et al. 2023

J Mater Sci

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Influence of High Pulsed Magnetic Field on the Dislocations and Mechanical Properties of Al2O3/Al Composites

Cited by 13 publications

References 26 publications

Effects of Graphene Nanoplates on the Mechanical Behavior and Strengthening Mechanism of 7075Al Alloy

Effects of Graphene Nanoplates on the Mechanical Behavior and Strengthening Mechanism of 7075Al Alloy

Effects of Electric and Magnetic Treatments on Microstructures of Solid Metals: A Review

Review: recent progress in aluminum matrix composites reinforced by in situ oxide ceramics

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