Journal ArticleDOI
Formation of nanostructured surface layer on AISI 304 stainless steel by means of surface mechanical attrition treatment
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In this paper, a nanostructured surface layer was formed on an AISI 304 stainless steel with low stacking-fault energy by means of the surface mechanical attrition treatment (SMAT).About:
This article is published in Acta Materialia.The article was published on 2003-04-18. It has received 604 citations till now. The article focuses on the topics: Surface layer & Austenitic stainless steel.read more
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Recent developments in stainless steels
Abstract: This article presents an overview of the developments in stainless steels made since the 1990s. Some of the new applications that involve the use of stainless steel are also introduced. A brief introduction to the various classes of stainless steels, their precipitate phases and the status quo of their production around the globe is given first. The advances in a variety of subject areas that have been made recently will then be presented. These recent advances include (1) new findings on the various precipitate phases (the new J phase, new orientation relationships, new phase diagram for the Fe–Cr system, etc.); (2) new suggestions for the prevention/mitigation of the different problems and new methods for their detection/measurement and (3) new techniques for surface/bulk property enhancement (such as laser shot peening, grain boundary engineering and grain refinement). Recent developments in topics like phase prediction, stacking fault energy, superplasticity, metadynamic recrystallisation and the calculation of mechanical properties are introduced, too. In the end of this article, several new applications that involve the use of stainless steels are presented. Some of these are the use of austenitic stainless steels for signature authentication (magnetic recording), the utilisation of the cryogenic magnetic transition of the sigma phase for hot spot detection (the Sigmaplugs), the new Pt-enhanced radiopaque stainless steel (PERSS) coronary stents and stainless steel stents that may be used for magnetic drug targeting. Besides recent developments in conventional stainless steels, those in the high-nitrogen, low-Ni (or Ni-free) varieties are also introduced. These recent developments include new methods for attaining very high nitrogen contents, new guidelines for alloy design, the merits/demerits associated with high nitrogen contents, etc.
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Nanostructured surface layer on metallic materials induced by surface mechanical attrition treatment
TL;DR: In this article, a surface mechanical attrition treatment (SMAT) was developed for synthesizing a nanostructured surface layer on metallic materials in order to upgrade the overall properties and performance.
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Evading the strength–ductility trade-off dilemma in steel through gradient hierarchical nanotwins
Yujie Wei,Y. Q. Li,Lianchun Zhu,Yao Liu,Xianqi Lei,Gang Wang,Yanxin Wu,Zhenli Mi,Jiabin Liu,Hongtao Wang,Huajian Gao +10 more
TL;DR: A way of enhancing the strength of twinning-induced plasticity steel at no ductility trade-off by exploiting the formation of a gradient hierarchical nanotwinned structure during pre-torsion and subsequent tensile deformation.
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Revealing the relationship between grain size and corrosion rate of metals
TL;DR: In this paper, a review of the pertinent literature combined with the authors' works reveals that a relationship exists between corrosion rate and grain size and reveals an important fundamental relationship that can be exploited for material durability and design.
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Microstructural evolution and nanostructure formation in copper during dynamic plastic deformation at cryogenic temperatures
Yusheng Li,Nairong Tao,Kathy Lu +2 more
TL;DR: In this article, the microstructural evolution and formation mechanism of nanostructures in bulk pure Cu samples induced by dynamic plastic deformation at high strain rates and cryogenic temperatures were investigated using transmission electron microscopic characterization.
References
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Book
Theory of Dislocations
John Price Hirth,Jens Lothe +1 more
TL;DR: Dislocations in Isotropic Continua: Effects of Crystal Structure on Dislocations and Dislocation-Point-Defect Interactions at Finite temperatures.
Book
X-ray diffraction procedures for polycrystalline and amorphous materials
Harold P. Klug,Leroy Alexander +1 more
Journal ArticleDOI
An investigation of surface nanocrystallization mechanism in Fe induced by surface mechanical attrition treatment
TL;DR: A grain refinement mechanism induced by plastic deformation during the SMA treatment in Fe was proposed in this article, which involves formation of dense dislocation walls (DDWs) and dislocation tangles (DTs) in original grains and in the refined cells under further straining.
Journal ArticleDOI
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.