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Atomic number density % for sintered alloy made from brass powder.
Tsuji, Enhanced Strength and Ductility in an Ultrafine-Grained Fe-22Mn-0.6C Austenitic Steel Having Fully Recrystallized Structure, Metall.
Tsuji, Significant contribution of stacking faults to the strain hardening behavior of Cu-15%Al alloy with different grain sizes, Sci.
Rep. 5 (2015), Article number: 16707
Tsuji, Simultaneously enhanced strength and ductility of Mg-Zn-Zr-Ca alloy with fully recrystallized ultrafine grained structures, Scripta Mater. 131 (2017) 1-5

In the coarsening stage, the carbon concentration remained unchanged and the number of particles per unit volume fell sharply.
The nucleation rate is too small to contribute to the number density of precipitates.
The presence of many defects, such as dislocations and grain boundaries that are preferential nucleation sites for cementite, the nucleation energy barrier can be sufficiently lowered.
The number density reaches its peak and the particles start to grow at the end of nucleation.
In the coarsening stage, the mean radius increases and number density of particles decreases.

The result show that: with the acr current increasing, the Cr content of (Ti,Cr)N composite films increased, the Ti content decreased, the number and size of droplets decreased, and the hardness of composite films increased first, then decreased.
We can see that the number and size of droplets decrease with the current Cr increase.
On the other hand, it could inhibit the growth of films grain and further improved the hardness of the films.
Conclusion (1) When the acr current increase, the Cr content of (Ti,Cr)N composite films increase , the Ti content decrease, the number and size of droplets decrease

Samples were subjected to the cycling heat/frost device and effect of a number of cycles on final bond behaviour of both UHPC and ordinary concrete were investigated.
The number of cycles varied from 100 to 400.Degradation of material and related decline of material characteristics may have very significant impact on values of the bond stress.
Samples were identically maintained as samples from concrete C50/60 and were subjected to the same number of cycles.
Fine-grained structure of UHPC in connection with excellent material parameters would resist on a long-term basis to extreme conditions represented undoubtedly by these freezing cycles.

The coordination number of C and/or O around Si is about four.
In order to avoid the brittleness at grain boundaries of polycrystalline state, the molecular structure of the precursor and the pyrolysis process must be optimized in order to prevent crystallization and to preserve an amorphous state up the working temperature [5,6].
In the study on silica glass [13], the pair distribution function G(r) (= 4πrρT(r), ρ: atom number density) exhibits three peaks at 1.61 Å (Si-O), 2.63 Å (O-O) and 3.07 Å (Si-(O)-Si).
Thus, assuming that the peak at 1.4 - 2.2 Å in the T(r) of NL400 fibers contains two contributions, namely a contribution of a Si-O correlation at around 1.6 Å and a contribution of a Si-C correlation at around 1.9 Å, the corresponding partial average coordination number Nij can be estimated from the peak area Aij using Nij = Cij·Aij/Wij.

The experimental programme was designed to investigate the deformation and failure modes of sandwich beams, so a large number of experiments have been conducted, and the experimental results are reported and discussed systematically.
To investigate the deformation and failure modes of sandwich beams, a large number of experiments have been conducted, and the experimental results are reported and presented systematically.
Its average cell size was measured according to the ASTM method for the grain diameter measure in polycrystalline materials [9].
Using a special clamped fixture, a large number of sandwich beams have been loaded under quasi-static loading.

The main phase of all the samples can be identified as LiFePO4 with an ordered olivine structure indexed to orthorhombic Pnmb (JCPDS card number: 40-1499) [34].
The diffraction peak intensity becomes strongest at 800°C, and peak width at half height become smaller, which indicates that the crystallinity, grain size and ordering of local structure increase, and the lattice strain releases with the increase of the sintering temperature [42].
This behavior could be attributed to the effect of carbon reducing the size of LiFePO4 grains [10,44].
When the preparing time extends to 16 h, the crystal grains grow and accompany with the agglomeration.
There is no remarkable segregation of carbon in the mapping area according to Fig. 11, which indicates carbon is uniformly coated on the surface of LiFePO4 grains.

Business Bureau of China reported that new oil well in service was emerging with a rate of 10×10 4 every year, and the total number of oil well had exceeded 80×10 4.
Grain refinement is the most effective method to increase both the strength and impact toughness.
As for quenching and tempering steel, increasing quenching temperature is usually used to improve the strength and impact toughness, but often accompanied with grain coarsening.
Microalloying elements such as Ti and Nb could constrain the growth of austenite grains.
NbC and TiN precipitate in grain boundary could prevent the growth of austenite grains, while the solid solution of Nb in austenite is in favor of strength.

Particle dispersion strengthened W alloys and ultra-fine grained W can improve mechanical properties and reduce ductility to brittle transition temperature (DBTT) in comparison with commercially available W [6].
Under initial steady-state conditons the exterior wall has a He concentrion of 1024 number of atoms.
Under initial steady-state conditions the exterior wall has a He concentration of 1.2x1024 number of atoms.
The only difference is that the number density of V particles is higher because of its higher concentration.

However, the problems in most traditional boring and drilling method encounter when the area of the investigation was large which will increase the number of borehole thus increasing money and time of the project.
This study aims to reduce some black box and ambiguities via relationship of different array of ERV and basic geotechnical properties with particular reference to moisture content and supported with soil grain size characteristics.
All sieve analysis results of soil specimen tested from both models has shown some variation in terms of grain size quantification due to the natural heterogeneity features of soil.
Grain size quantification results.