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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Effects of Deep Rolling on the Microstructure Modification and Fatigue Life of 35Cr2Ni4MoA Bolt Threads
Xianmo Wang,Xi Xiong,Kanghua Huang,Shaojun Ying,Mingjun Tang,Xinhe Qu,Wen Ji,Chengkai Qian,Zhipeng Cai +8 more
TL;DR: In this article, deep rolling was applied to a bolt thread to improve its fatigue resistance, and a more compact streamlined fibrous microstructure, composed of refined grains, with increased dislocation density and hardness and decreased tensile residual stress, was formed in the plastic deformation layer.
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The Effect of a Composite Nanostructure on the Mechanical Properties of a Novel Al-Cu-Mn Alloy through Multipass Cold Rolling and Aging
TL;DR: In this article, an effective approach composed of solution treatment, multipass cold rolling and aging was developed to improve the strength and ductility of novel Al-Cu-Mn alloys.
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Effect of precipitated phase on dislocation activity under high-frequency impacting and rolling
TL;DR: In this paper, a detailed schematic of coordinated deformation dislocation mechanism around precipitated phase was established, which showed that lots of coordinated dislocations are formed around the precipitated phases which are far away from the treated surface.
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Effect of Surface Mechanical Attrition Treatment on Torsional Fatigue Properties of a 7075 Aluminum Alloy
TL;DR: In this article , the effect of surface mechanical attrition treatment (SMAT) on torsional fatigue properties of a 7075 aluminum alloy was investigated, where a number of fatigue samples were heat treated to increase the sensitivity of the material to SMAT.
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Effects of ultrasonic surface rolling processing on the surface microstructure and properties of a tungsten heavy alloy
TL;DR: In this paper, the effects of ultrasonic surface rolling processing on the surface structure and properties of an R2M tungsten alloy for die-casting molds were studied, and the results showed that the surface roughness of the specimens decreases obviously after USRP.
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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