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
Citations
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Sub-micrometer structures generated during dry machining of copper
H. Ni,Ahmet T. Alpas +1 more
TL;DR: In this paper, the effect of the prior thermo-mechanical treatment has been considered by performing orthogonal cutting tests on hot extruded and fully annealed samples.
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Surface state of Inconel 718 ultrasonic shot peened: Effect of processing time, material and quantity of shot balls and distance from radiating surface to sample
TL;DR: In this article, the results of ultrasonic shot peening on Inconel 718 in precipitated state have been studied, varying the distance from the radiating surface of the booster to the sample, the processing time and the material (WC/Co and steel) and number of shot balls.
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Enhancing the Structural Performance of Lightweight Metals by Shot Peening
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Coating metals by surface mechanical attrition treatment
TL;DR: In this paper, the microstructure of the cross-section of the Al 6061 and Al 2024 alloys was investigated by scanning electron microscopy and X-ray diffraction.
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Influence of process parameters of ultrasonic shot peening on surface nanocrystallization and hardness of pure titanium
TL;DR: In this paper, the influence of shot peening on surface nanocrystallization and hardness of pure titanium was studied, and significant hardness increases of different degrees were observed, and the influence rules of process parameters on the NC layers and surface hardness of peened pure titanium were analyzed with experimental results measured by Vickers microhardness meter, optical microscope (OM), scanning electron microscope (SEM), X-ray diffraction pattern (XRD), and high-resolution transmission electron microsc (HRTEM).
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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