Microstructure and evolution of mechanically-induced ultrafine grain in surface layer of AL-alloy subjected to USSP
TLDR
In this paper, the authors investigated the UFG microstructures in the surface layer of an aluminum alloy 7075 heavily worked by ultrasonic shot peening and found that the grain subdivision into the subgrains was the main mechanism responsible for grain refinement.About:
This article is published in Acta Materialia.The article was published on 2002-05-08 and is currently open access. It has received 418 citations till now. The article focuses on the topics: Dislocation & Surface layer.read more
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Fabrication of nanostructured Mo coatings on Al and Ti substrates by ball impact cladding
TL;DR: In this paper, a multinomial multicomponent Mo coatings were fabricated on Ti and Al substrates by ball impact cladding at room temperature in an ambient atmosphere, and the size of nanocrystalline grains in the Mo coating ranged between 2 nm and 10 nm.
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Molecular-dynamics simulations of stacking-fault-induced dislocation annihilation in prestrained ultrathin single-crystalline copper films
TL;DR: In this article, large-scale molecular-dynamics simulations of dynamic deformation under biaxial tensile strain of prestrained single-crystalline nanometer-scale-thick face-centered cubic (fcc) films are presented.
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Grain Refinement of Pure Ti During Plastic Deformation
TL;DR: In this paper, the deformation structures were systematically characterized in a nanocrystalline (NC) layer of the treated surface which exhibits a grain size gradient, and the mechanism of grain refinement was interpreted in terms of the classical migration dynamic recrystallization and continuous rotation DRX, respectively.
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Surface nanocrystallization of aluminium alloy by controlled ball impact technique
TL;DR: In this paper, a novel surface modification process was developed for synthesizing a nanostructured surface layer and to impart compressive residual stresses on metallic materials in order to enhance the overall surface properties.
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Plastic accommodation during tensile deformation of gradient structure
Xiaolei Wu,Muxin Yang,Runguang Li,Ping Jiang,Fuping Yuan,Yandong Wang,Yuntian Zhu,Yueguang Wei +7 more
TL;DR: In this article, the authors measured lattice strains sequentially from the nanostructured (NS) surface layer to the central coarse-grained (CG) layer to elucidate when and how plastic accommodation occurs and evolves within the gradient structure, along with their roles in plastic deformation and strain hardening.
References
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The process of grain refinement in equal-channel angular pressing
TL;DR: In this article, experiments were conducted on high purity aluminum to investigate the process of grain refinement during equal-channel angular (ECA) pressing, where samples were subjected to 1 to 4 pressings and then sectioned for microstructural examination in three mutually perpendicular directions.
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Structure and properties of ultrafine-grained materials produced by severe plastic deformation
TL;DR: In this article, the formation of a special grain boundary phase, i.e., a thin near-boundary layer with high dynamic activity of atoms, has been found, leading to the manifestation of promising new elastic, strength, superplastic, damping and magnetic properties of UFG materials.
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Overview no. 96: Evolution of F.C.C. deformation structures in polyslip
TL;DR: In this article, the authors investigated the microstructural evolution during polyslip in f.c.m.d. metals and showed that there are differences in the number and selection of simultaneously acting slip systems among neighboring volume elements of individual grains.
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An investigation of microstructural evolution during equal-channel angular pressing
TL;DR: In this article, the development of an ultra-fine grain size during equal-channel angular (ECA) pressing of high purity aluminum with an initial grain size of ∼1.0 mm was investigated.
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