Journal ArticleDOI
Hall-Petch relationship and substructural evolution in boron containing type 316L stainless steel
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TLDR
The presence of boron affects the flow stress and changes the Hall-Petch (H-P) parameters, depending on test temperature as mentioned in this paper, which leads to some anomalous effects of grain size at 700 C.About:
This article is published in Acta Materialia.The article was published on 1997-06-01. It has received 38 citations till now. The article focuses on the topics: Type (model theory).read more
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Biological materials: Structure and mechanical properties
TL;DR: In this article, the basic building blocks are described, starting with the 20 amino acids and proceeding to polypeptides, polysaccharides, and polyprotein-saccharide.
Journal ArticleDOI
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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Orientation dependence of twinning and strain hardening behaviour of a high manganese twinning induced plasticity steel with polycrystalline structure
TL;DR: In this article, a combination of tensile mechanical properties was shown to be a result of complex dynamic strain-induced microstructural reactions, including dislocation glide, dislocation dissociation, stacking fault formation, dynamic recovery, mechanical twinning and dynamic strain ageing.
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Dynamic Recrystallization of Austenite in Ni-30 Pct Fe Model Alloy: Microstructure and Texture Evolution
TL;DR: In this paper, the microstructure and crystallographic texture development in an austenitic Ni-30 pct Fe model alloy was investigated within the dynamic recrystallization (DRX) regime using hot torsion testing.
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Effects of temperature on mechanical properties and deformation mechanisms of the equiatomic CrFeNi medium-entropy alloy
TL;DR: In this paper, an equiatomic CrFeNi medium-entropy alloy (MEA) that constitutes a cornerstone of austenitic stainless steels and Fe-based superalloys is investigated.
References
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The deformation of plastically non-homogeneous materials
TL;DR: The geometrically necessary dislocations as discussed by the authors were introduced to distinguish them from the statistically storages in pure crystals during straining and are responsible for the normal 3-stage hardening.
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Effect of boron on grain-boundaries in Ni3Al†
TL;DR: In this paper, the effects of boron additions on grain-boundary chemistry and tensile properties of Ni3Al containing 24-26 at.% Al were studied, and the results suggest that alloy stoichiometry strongly influences grain-body chemistry, which in turn affects the grainboundary cohesion.
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The Effect of Grain Size and Strain on the Tensile Flow Stress of Aluminium at Room Temperature
TL;DR: In this article, tensile-stress-strain data over a strain range from 0.2 to 30% were obtained at room temperature for 99.999 and 99.5% aluminium as a function of grain size.
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The dependence of polycrystal work hardening on grain size
TL;DR: In this paper, a new analytical approach to polycrystal work hardening was devised to understand and describe these data, together with data on 70-30 brass, and it was shown that large-strain cell size in copper ought to depend on grain size, was verified by direct measurement.