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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Interrogation of the microstructure and residual stress of a nickel-base alloy subjected to surface severe plastic deformation
TL;DR: In this article, a low stacking-fault energy nickel-base, single-phase, face-centered-cubic (fcc) alloy has been subjected to surface severe plastic deformation to introduce nano-grains and grain size gradients to the surface region of the alloy.
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Effect of surface nanostructure on tensile behavior of superalloy IN718
Sanjeev Kumar,G. Sudhakar Rao,Kausik Chattopadhyay,G.S. Mahobia,N.C. Santhi Srinivas,Vakil Singh +5 more
TL;DR: In this article, a peak aged nickel based superalloy Inconel 718 was subjected to ultrasonic shot peening for different durations of 45, 60 and 90 min.
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Processing of nanostructured metals and alloys via plastic deformation
TL;DR: In this article, the principles of grain refinement by plastic deformation and an introduction to the reported processing techniques are given, and four most promising and promising techniques are described in detail: equal-channel angular pressing, high-pressure torsion, accumulative roll bonding, and surface mechanical attrition treatment for nanostructured surface layers.
Journal Article
Development of nanostructures in metallic materials with low stacking fault energies during surface mechanical attrition treatment (SMAT) : Nano-Hetero Structures in Advanced Metallic Materials
TL;DR: In this article, the grain refinement process during surface mechanical attrition treatment (SMAT) was investigated in materials with low stacking fault energies (SFE, Inconel 600 alloy and AISI 304 stainless steel) by means of transmission electron microscopy and high-resolution electron microscope, respectively.
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Mechanical properties and thermal stability of nanocrystallized pure aluminum produced by surface mechanical attrition treatment
TL;DR: In this article, the relationship between microstructure and mechanical properties of Al with surface mechanical attrition treatment (SMAT) was discussed, and the growth kinetics of nano-sized grain of Al subjected to SMAT was investigated.
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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