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Online since: January 2021
Authors: Tatyana Murashkina, Egor Kashkarov, Nahum Travitzky, Maxim Syrtanov
They differ in the number of M layers separating the A layers [2].
The grains of the MAX- and TiC phases are difficult to distinguish due to their similarity in contrast.
Mater. 21 (2019) Article number 1900180
Mater. (2020) Article number 2000136
Ser. 251 (2010) Article number 012025
Online since: April 2021
Authors: S.P. Akbar Hussain, K. Raja Sekhar, P. Anand, B. Madhusudhana Reddy
The Vickers hardness number approximately evaluated by using sine term as A ≈ d21.8544 Where 1.8544 is 2 sin( 13602 ).
Vickers Hardness of AMMNCs Samples Sample Number Composites Hardness Number (HV) 1 (Base) Al 6060 73.1 2 Al 6060 + 0.3% CNT 82.1 3 Al 6060 + 0.7% CNT 89.4 4 Al 6060 + 1% CNT 93.1 Fig. 4.3.
Hardness Number 4.4.
Impact Strength Sample Number Composites Impact Strength (Joules) 1 (Base) Al 6060 12 2 Al 6060 + 0.3% CNT 18.4 3 Al 6060 + 0.7% CNT 16.2 4 Al 6060 + 1% CNT 20.3 Fig. 4.4.
The grain size control of A356 aluminum alloy by horizontal electromagnetic stirring for rheology forging.
Online since: January 2010
Authors: Yuji Kawakami, Takashi Enjoji, Shigeki Morita, Shingo Tanaka, Nobuyoshi Ohno
The grain size of this alloy was 14.3m.
Fig.10(a) shows the maximum tensile and compressive strains as a function of number of cycles at different stress amplitudes.
However, the compressive strain decreases with increasing the number of cycles at stress amplitude of 110MPa and 130MPa (higher than fatigue limit).
Fig.10(b) shows the mean strains as a function of number of cycles at different stress amplitudes.
On the other Fig.10 Strains as a function of number of cycles: (a) tensile and compressive strains, (b) mean strain.
Online since: July 2011
Authors: Jing Lan Deng, Bing Feng
The absorbing mechanism operates as follows: 1) Each grain of conductive powder becomes a dipole, within which the electromagnetic waves resonate, and the resonance is damped, resulting in attenuation; 2) The attenuation caused by multiple reflections; and 3) The resistive loss of current leakage between the particles of conductor powder.
If it is, a large number of graphite powder particles will be in series contact, forming a strong reflector.
Furthermore, as content increases, the number of interfaces between the graphite powder, resin and fiber particles will increase, resulting in interfacial charge accumulation, forming additional interfacial polarizations, which is not good for absorption loss of electromagnetic waves.
Online since: January 2007
Authors: Dirk Godlinski, M. Dourandish, Abdolreza Simchi
Introduction Rapid prototyping technologies can create physical parts directly from CAD models by generating a number of layers of a given material [1].
Therefore, if sintering is performed at the higher temperatures, the materials turns mushy and rapid densification is attained by particles rearrangement and grain shape accommodation.
Number Drying Time (S) Spreading Speed (mm/s) Layer Thickness (µm) Observations Fine Powders Coarse Powders 1 30 30 75 PL, AP -- 2 30 30 100 UL, PL, AP PL 3 30 30 150 -- PL 4 30 10 75 AP -- 5 30 10 100 UL, PL, AP PL 6 30 10 150 -- Fine PL 7 60 30 75 AP -- 8 60 30 100 UL, AP PL 9 60 30 150 -- Fine PL 10 60 10 75 Best of All -- 11 60 10 100 UL PL 12 60 10 150 -- Best of All PL = pushed layers AP = agglomerated particles UL = unbound layers The agglomeration of powder particles influences the densification of the green part during subsequent sintering.
Online since: January 2010
Authors: Michail Michailov
Although these metals are bulk immiscible, it has been shown in a number of studies that formation of 2D surface-confined alloy at Pb/Cu interface is energetically favorable process.
It forms number of amazing alloyed superstructures: quasi uni-dimensional p(Nx1) phases for Cu(110) [4,6] or domains with Pb-rich and Pb-poor phases for Cu(111) with temperature dependent periodicity. [3].
The advantage of this potential, widely used in contemporary atomistic simulations, relates to its ability for better reproducing real physical properties of surfaces and interfaces including point defects, dislocations, vacancies, grain boundaries, etc. [10].
Online since: June 2011
Authors: Sheng Lu, Jing Chen, Liang Wen Wu
In the case of magnetron sputtered films applied to magnesium alloys and the assessment of their behavior, the number of studies is relatively scarce [7-11].
It is observed from Fig.1 that the number of crystal clusters in TiAlN ternary compound film increase when the partial pressure ratio of N2/Ar changed from 0.5:10 to 1.5:10, while the size of the crystals clusters tends to decrease.
It may derive from the effect of grain refining as N2/Ar partial pressure ratio increased from 0.5:10 to 1.5:10 as shown in fig. 1 and the appearance of TiN while N2/Ar ratio reached 2:10.
Online since: June 2011
Authors: Christophe Sigli, Benjamin Decreus, Frédéric de Geuser, Alexis Deschamps, Patricia Donnadieu
In the present case, the very low value of the plate thickness requires to correct for the effect of Ewald sphere curvature and the effect of grain misorientations within the sample volume illuminated by the X-ray beam.
Thus it does not seem that the composition of the solid solution can account for the large difference in incubation time or for the large difference in precipitate number density between the two alloys.
The precipitation of the T1 phase as platelet precipitates has been shown to be influenced by the alloy solute content, which controls particularly the incubation time before its nucleation, and the resulting precipitate number density.
Online since: May 2011
Authors: Samuel Li
The flows underneath the ice were turbulent, with the Reynolds number exceeding 1.0´106 (not shown).
The bed materials were homogeneous, without complication due to grain size distributions.
This law is valid for flow past a hydraulically rough surface, as is the case for the high Reynolds number flows discussed in this study.
Online since: October 2011
Authors: Jun Wang, Yu Li, Wen He Cui
However, due to the numbered vegetation and lower regeneration capacity of plant resources in arid area or the neighboring areas, most wood need for construction must buy from outside, and make the cost of housing construction greatly increased, Because of this, the use ratio of wood become a luxury symbol of status and financial power in construction, it has made an attached sense beyond the practical value and turn into one of the aesthetic contents in vernacular architecture.
Along with the innovation of material processing, structural style and construction equipment, the kind and number of exploitable building material resources will be greatly increased.
Cotton straw composite grass brick puts dry rice (wheat) straw (that is the section between grain crop’s root and ear) through mechanical finishing, impact and extrusion to form layers of chip structure, and then use hemp rope or wire to pack into blocks.
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