Search results

From the data specified it is clear that at very high stability of Rm and Re, around 4% of products did not meet requirements related to elongation A5 and also there was a high instability of plasticity parameter determined by the energy of breaking (KV).
The first cooling rate is the modelling of air-cooling and the second should guaranty to obtain grain size reduction of ferrite and pearlite structure, without presence of bainite.
Conclusions Based on investigations carried out the following conclusions may be drawn and observations made: - The range of temperatures and deformation rates applied during normalising rolling guarantees reducing the actual grains in bars from the studied steel from the range of around 13,3 - 11 µm (80% of coarse grain) to the range of 11 - 6,65 µm (fractions of around 50%), - The combination of technology of S355 steel bars normalising rolling with accelerated continuous cooling of finished products after the rolling enables achieving nearly 300% reduction of the grain size (to class 12,5 - around 4,7 µm).

Activity was originally developed as a metric for automated model-reduction and justified as an efficient assessment of elements’ relative importance.
W., “Dimensional Analysis of Jet-Noise Data,” AIAA Journal, Vol. 44, No. 3, 2006, pp. 512-522
S., “An energy-based model reduction methodology for automated modeling,” Ph.D.

The corresponding data is processed and analyzed by PowerSuite software.
ICORR is the open-circuit potential for the system. ßa and ßc are the Tafel proportionality constants for the anodic (oxidation) and cathodic (reduction) reactions and are defined as positive numbers.
With the reduction of W / C and the increase of unit volume of cement, the concrete 28d compressive strength increases.

Introduction InP-based heterojunction bipolar transistor (HBT) has been studied as an active device of the broadband optical fiber communications ICs for the needs of high data transfer rate of the next-generation multimedia service [1,2].
It results from the reduction of base resistance due to closer spacing between the emitter electrode and the base electrode, and the reduction of base-collector capacitance (CBC) because of smaller total base area including the intrinsic emitter mesa area in case of the self-aligned HBT.

Using the data of motor vehicles owned per 1000 people and urbanization rate in Shandong Province between 1996 and 2008, we use trend extrapolation and grey model GM (1. 1) to perform prediction.
Medium scene: On the base of urbanization medium scheme, it mainly concerns about the future scene of Shandong Province under the consideration of economic developing, motor vehicle technology advancing, traffic patterns changing, and carrying out energy-saving and emission reduction.
High scene: On the base of urbanization high scheme, it outlines the future scene of Shandong Province considering that economic growth developing fast, motor vehicle technology further upgrading, traffic patterns improving and energy-saving and emission reduction level is in the national advanced level.

However, the corrosion behavior and the related data of new system of bulk amorphous alloy in various conditions will influence their application significantly.
During the immersion in neutral NaCl solution, cathode reaction is oxygen reduction.
The reduction of the response resistance of electrode, Rt, indicate that the dissolved reaction of metal matrix is easier.

However, with further thrust in weight reduction, in order to meet environmental norms and to increase fuel efficiency, the recent trend is to move towards the application of more and more high strength materials.
The higher density of Fe(Ti+Nb)P precipitates in Steel 1 as compared to Steel 2, appears to produce the following effects: (i) A higher consumption level of Ti and Nb, resulting in the reduction of these stabilizing elements in the material to fix the C and N; (ii) Even if the steel gets stabilized, there will be less Ti in solid solution.
A comparison of the texture data of these two steels reveals that the continuously annealed steel possesses a stronger γ-fiber than the batch annealed steel [see Fig 7].

Because of the poor consistency of SiO2 and flake metal powder, more space appeared in the coating, which resulted in the reduction of hardness.
The data of the impedance spectra of the three coatings by fitting are listed in Table 5.
It because that TiO2 nanoparticles can bond with chrome-free Dacromet coating very well, however, SiO2 nanoparticles are not and result in the reduction of performance

Lightweight magnesium alloys have evoked an interesting the automotive industry for improving fuel efficiency through vehicle reduction in the past decade [2-4].
Wang et al. [18] reported that A1-RE induces reduction of the laminar spacing and causes refinement of the microstructure.
The values of n were used to fit the experimental data points, since they are usually associated with several creep mechanisms such as grain boundary sliding, dislocation viscous glide, dislocation climb and dislocation creep controlled by non-basal planes slip [21].

Experimental compositions were produced in a laboratory vacuum furnace, in the form of 50 kg ingots, which were industrially homogenized, forged (4 times area reduction) and annealed.
a) Low Si b) High Si Figure 1: Electron diffraction and qualitative EDS data for all carbides observed in a) low Si and b) high Si H11 tool steels, after hardening from 1020 ºC and tempering 2x2 h at 625 ºC.
The first is related to the thermodynamical condition of Cr atoms which, after leaving martensite and moving to cementite, cause a reduction in free energy, thus decreasing the driving force for precipitation.