Ultrafine grain
A study of manufacturing tubes with nano/ultrafine grain structure by stagger spinning
... nano/ultrafine grain structures are widely used in engineering applications due to their high strength and ductility, good surface smoothness, refined microstructure and super-plasticity at room ...
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A two-step approach for producing an ultrafine-grain structure in Cu-30Zn brass
... Not surprisingly, the final recrystallized material contained a significant proportion of annealing twins. Accordingly, the grainsize distribution was bimodal, consisting of a twin-related peak at 0.1 μm and a ...
7
Fatigue Crack Growth and Related Microstructure Evolution in Ultrafine Grain Copper Processed by ECAP
... The inverse pole figure (IPF) coloured map of the grain structure near the fracture surface of Specimen 1P is shown in Fig. 6(a). The grains visible near the fracture surface correspond to the cell structure seen ...
8
A Study On Effect Of Ultrafine Grain Refinement On Mechanical Properties Of Non-Heat Treatable Alloys
... Among the procedure devised for grain refinement, severe plastic deformation is of particularly interest and the focus of this study. This project work deals with the concept of ECAP used to introduce severe ...
9
Annealing behavior of cryogenically-rolled Cu-30Zn brass
... homogenous ultrafine- grain structure) may be recrystallization annealing following cryogenic ...the ultrafine grain range (≤ 1 ...additional grain refinement during final heat ...
12
Recent Trends in Producing Ultrafine Grained Steels
... with grain sizes below about 1 µm offer the prospect of high strength and high toughness with traditional steel ...in ultrafine grain ...of ultrafine grains steels with different structures ...
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An investigation of the properties of conventional and severe shot peened low alloy steel
... The shot peening process induced the plastic deformation on the surface of the target causing work hardening on these peened samples. It is also clearly seen that comparing with the as-received specimen, the near-surface ...
24
Microstructure response of cryogenically-rolled Cu-30Zn brass to electric-current pulsing
... Large deformation at cryogenic temperatures is sometimes considered as a promising and cost-effective method for the production of bulk fine-grain materials [e.g. 1-14]. The low deformation temperatures are ...
10
The Effect of FRCA and WPSA on the Strength Properties of Foamed Concrete
... The effect of different percentages of ultrafine recycled concrete aggregate (FRCA) to the fine aggregate content on the compressive strength of foamed concrete is recorded in Fig. 3. From the figure, it can be ...
6
The investigation of influence of laser radiation on the structure and mechanical properties of composite electrolytic nickel coating
... modified ultrafine diamond electrodeposited under external stimulation laser demonstrated the dependence of the structure and mechanical properties of composite electrolytic coating (CEC), and the qualitative and ...
9
Effects of neonatal inhalation exposure to ultrafine carbon particles on pathology and behavioral outcomes in C57BL/6J mice
... same disorders linked to adverse neurodevelopmental outcomes from early-life exposure to pollution particu- late [6, 10, 11]. Despite the evidence that UFCP can effectively infiltrate and be retained in the CNS [37], the ...
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SPEL/EU data User manual Revised version, April 1995
... Grain maize, organic potassic Grain maize, production adjustments EAA Gross production; grain maize Grain maize, overheads repairs Grain maize, variable costs repairs Grain maize, seed G[r] ...
228
SMALL GRAIN 11 Controls Grain Size, Grain Number and Grain Yield in Rice
... and grain filling, resulting in wide and heavy grains in rice (Wang et ...control grain size by increasing cell proliferation in spikelet hulls (Duan et ...late grain size by influencing cell ...
11
The Effect of Sulphate Anions on the Ultrafine Titania Nucleation
... out with the use of ICSD structural models. The structural models for anatase and rutile were based on the ICSD #92363 and ICSD #24780, respectively. Copper powder annealed in vacuum (850–900 °C for 4 h) with an average ...
5
Ultrafine grains - a new option for light metals
... of grain refinement by SPD is still under ...average grain size of the UFG metals produced depends on the SPD parameters (strain, temperature, pressure) and on the material used; for pure metals, grains ...
7
Surface area of particle administered versus mass in determining the pulmonary toxicity of ultrafine and fine carbon black: comparison to ultrafine titanium dioxide
... Nanotechnology is considered to be one of the world's most promising new technologies, able to impact all phases of life, just as the industrial revolution did in the past two centuries. Utilizing the quantum properties ...
12
Special Grain Boundaries in Ultrafine Grained Tungsten
... The experiments were carried out in a two-chamber FIM with needle-shaped specimens cooled to 77 K. The microscope chamber was pumped down to the back- ground pressure of 10 − 6 Pa by cryogenic pumps. Field ion images ...
7
Petrology and petrogenesis of the Motzfeldt Ta mineralisation, Gardar Province, South Greenland
... The contact in this region shows a fine-medium grain chilled margin in the FDF, though chilling is not so significant as to suggest emplacement of the FDF into a cold host. The contact within approximately 30 cm ...
221
Ultrafine Structure of Calcific Deposits Developed in Calcific Tendinopathy
... The ultrafine structure of tendons deposits formed in three patients, males aged 52 and 61 years and a female aged 71 years were evaluated by atomic force ...
7
Study of Flow Behavior of Ultrafine Particles Agglomerations in the Riser
... LES model, the agglomerates model is modified from the molecular model and the model proposed by Arastoopour et al [1]. We use the natural agglomerates as the single ultrafine particles in the simulation of flow ...
12