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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Literature review on the mechanical properties of materials after surface mechanical attrition treatment (SMAT)
TL;DR: In this article, the authors provide a comprehensive literature review on the mechanical properties of materials after SMAT including the hardness, tensile strength and elongation, and residual stress, and the prospects and recent research trends in terms of materials affected by SMAT are summarized.
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Dynamic Processes for Nanostructure Development in Cu after Severe Cryogenic Rolling Deformation
Yinmin Wang,Tong Jiao,En Ma +2 more
TL;DR: In this article, the dynamic grain refinement behavior upon severe plastic deformation has been systematically studied in commercial purity copper that was heavily cold rolled to large deformations at cryogenic temperatures, enabling an investigation of the various dynamic recrystallization phenomena upon further deformation.
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Near-Surface Deformed Layers on Rolled Aluminum Alloys
TL;DR: In this article, two types of near-surface deformed layers are observed: type A is characterized by fine grains with grain boundaries decorated by oxide particles; type B is characterized also by fine grain but with the grain boundaries free of oxide particles.
Journal Article
Dynamic processes for nanostructure development in Cu after severe cryogenic rolling deformation : Nano-Hetero Structures in Advanced Metallic Materials
Yinmin Wang,Tong Jiao,En Ma +2 more
TL;DR: In this article, the dynamic grain refinement behavior upon severe plastic deformation has been systematically studied in commercial purity copper that was heavily cold rolled to large deformations at cryogenic temperatures, enabling an investigation of the various dynamic recrystallization phenomena upon further deformation.
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A direct comparison in the fatigue resistance enhanced by surface severe plastic deformation and shot peening in a C-2000 superalloy
Leon L. Shaw,J.W. Tian,Angel L. Ortiz,K. Dai,J.C. Villegas,Peter K. Liaw,Ruiming Ren,Dwaine L. Klarstrom +7 more
TL;DR: In this paper, the authors presented the first evidence and modeling efforts showing that surface severe plastic deformation (S2PD) can more effective in producing metallic components with superior fatigue properties than shot peening (SP).
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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