Search results

A number of investigations dealing with MoSi2 oxidation behavior have been carried on [5].
With the increase of infiltration temperature, the grain size of Mo(Al,Si)2 particles sizes increases.
And there were holes inside the grains.
Though the compositions were homogeneous at 1550°C, its grains were coarse so that the bending strength decreased.
Although the grains were very fine at the infiltration temperature of 1150°C, the bending strength was lower.

The result shows that with the increase of Nb content, the grain size decreased, but more pores formed.
It could be seen that, Mo2FeB2 based cermets without any additions have a grain size about 2.1 μm (Fig. 3a).
At the same time, the number of pores gradually increases with increase Nb content.
The based cermets with 6 wt.% Nb addition exhibited the smallest grain size.
The results showed that with the increase of Nb content, the grain size decreased, but more pores formed.

The diffusion bonding process has a number of advantages over other methods of material joining and has been proved to be successful for the joining of Ti alloys and γ based TiAl[8-18].
A diffusion zone of around 4 µm composed of a relative narrower fine α/α2 grain structure was obtained under this bonding condition.
The widths of two zones and sizes of α2/α grains within the zones are comparable.
The grain growth was faster in some areas along the DB line and some extremely large α2 grains were observed especially at bonding temperature of 950°C.
The assistant role of original α2 lamellae on the new α2 grain growth was observed.

Annealing leads to a significant grain growth and changes the nanocrystalline film into polycrystalline with grain size around 2.5 mm.
Left panels in Fig. 9 show cumulative number of AE counts detected in the films during hydrogen loading.
Buckling of the film which takes place at xH > 0.1 leads to a huge increase in the number of AE counts.
Plastic deformation takes place during further loading and leads to a strong increase in the number of AE counts.
Finally at xH > 0.3 buckling occurs and further enhances the number of AE events.

Recently, a number of dielectric ceramics belonging to the AnBnO3n+2 series are known to exhibit good microwave properties [7-9].
For all the samples, two types grain morphology were clearly visible: round-like and planar grains.
The large number of planar grains indicated that they were Mg5(NbTi)4O15 grains, which is consistent with XRD results.
A porous structure with small grain size was observed for the specimen sintered at 1150 oC, as shown in fig. 2(a).
As the sintering temperature increased, the grain size increased.

The pyrite grains with alive and heat-inactivated biofilm cells of L. ferriphilumT were prepared as described [5].
The number of planktonic cells was determined by direct counting with a Thoma chamber within 4 h.
The amount of attached cells was calculated by subtracting the planktonic cells from the initial cell number.
Biofilms of S. thermosulfidooxidansT on pyrite grains (A) and pyrite grains precolonized with alive biofilms (B) or inactive biofilms (C) of L. ferriphilumT , after 1 day of incubation.
Biofilms of S. thermosulfidooxidansT on pyrite grains (A) and pyrite grains precolonized with alive biofilms (B) or inactive biofilms (C) of L. ferriphilumT after 7 days of incubation.

As seen from the temperature profile in Fig. 2 (d), the whole melt within the sump keeps the large undercooling state, which must increase the nucleation rate and number.
When applying the air knife, the melt flow and temperature field in the melt pool is not mod ified, as shown in Fig. 4, so the number of nucleation in EMA-DC casting is the same as that in EM-DC casting process, but the increase of the sump depth results in the grain having enough time to grow up.
However, the number of nucleation is so enormous, which results in the gain having not enough space to grow up.
To sum up, applying electromagnetic field during DC casting can refine the grain effectively and promote the formation of equiaxed grain.
Applying electromagnetic field during DC casting can refine the grain effectively and promote the formation of equiaxed grain.

And one sample will be sequentially divided if its partition number is less thanuntil the partition number equals to.
From Fig 6 we can conclude that the complexity of time series decreases with the deepening of coarse graining as the value ofis positive all along.
Furthermore, the decreasing speed of the time series’ complexity reduces with the deepening of coarse graining for the reason that the value ofdecreases with the increases of the number of symbol.
Perform time series symbolization to the sensitive components whose symbol number is less than 9 continually until their symbol number is 9.
(2) The complexity of hydraulic pump’s vibration signal reduces with the increases of the coarse graining degree, and also the reduce speed of the complexity

Through analysis it is concluded that the strength of the tested steels aged at 450°C reaches the maximum value, which is attributed to the precipitation of a large amount of fine ε-Cu particles(5~10nm) and a small number of(Nb,Ti)(C,N) precipitates.
(b) EL and Ratio of YS-UTS Microstructure.As shown in Fig.2(a), the microstructure of the as-rolled specimen consists of large numbers of lath bainite(LB) and a few granular bainite(GB), which formed in the interior of the original austenite grain after rolling.
In this case, the original austenite grain boundaries still clear to see.After 400°C aging treatment, the microstructure of the specimen is still the mixed structure of LB and GB, however, the percent of GB increases dramatically[Fig.2(b)].At the same time, the lath is coarsened and the original austenite grain boundary is no longer visual.After 450°C aging treatment, the volume fraction of GB was farther increased while the volume of LB decreases sharply, and there is a few quasi polygon ferrite(QF) begins to appear [Fig.2(c)].
However, with the aging temperature rising, the proportion of QF increases and its grain coarsens.
When the aging temperature reached 450°C, the bainite lath become wider distinctly to 150~200nm along with the number of particlesincreased.

Page Numbers.
Do not number your paper: 4.
The equations have to be numbered sequentially, and the number put in parentheses at the right-hand edge of the text.
Punctuation appears after the equation but before the equation number, e.g.
The references are to be numbered in the order in which they are cited in the text and are to be listed at the end of the contribution under a heading References, see our example below.