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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Plastic strain-induced grain refinement in the nanometer scale in a Mg alloy
TL;DR: In this article, the strain-induced grain refinement process in AZ91D alloy includes three steps, at the initial stage twinning dominates the plastic deformation and divides the coarse grains into finer twin platelets, with increasing strain, double twins and stacking faults form and a number of dislocation slip systems are activated.
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Mechanical properties and deformation mechanisms of gradient nanostructured metals and alloys
TL;DR: In this article, a review of the state of the art in the field of gradient nanostructured metallic materials is presented, covering topics ranging from the fabrication and characterization of mechanical properties to underlying deformation mechanisms.
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Diffusion of chromium in nanocrystalline iron produced by means of surface mechanical attrition treatment
TL;DR: In this paper, surface mechanical attrition treatment (SMAT) was applied to a pure iron plate and a nanometer-grained surface layer without porosity and contamination was fabricated.
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Friction stir processing of large-area bulk UFG aluminum alloys
TL;DR: In this article, friction stir processing (FSP) was used to refine the grain size in commercial 7075 Al to a sub-micrometer scale (∼250 nm) and the resulting microstructural characteristics were studied.
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Surface nano-functionalization of biomaterials
TL;DR: The fabrication, characterization, and properties of biomaterials such as ceramics, metals, and polymers with nanostructured surfaces are reviewed.
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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