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The elastic-plastic fracture Base metal Welded matarials Specimen CF8M SA508 cl.3 Virgin 3600hr degraded Tensile strength (MPa) 604 640 597 646 Elongation (%) 71.4 9.6 45.0 57.1 Reduction of area (%) 66.9 64.9 58.9 63.4 Crack extension (mm) 0 1 2 3 4 5 6 7 J value (KJ/m2 ) 0 200 400 600 800 1000 No.1 Power law regression line Blunting line 0.15mm Exclusion line 1.5mm Exclusion line 0.2mm offset line J=598.45(∆a)0.2956 Crack extension (mm) 0 1 2 3 4 5 6 7 J value (KJ/m 2) 0 200 400 600 800 1000 1200 1400 No.4 Power law regression line Blunting line 0.15mm Exclusion line 1.5mm Exclusion line 0.2mm offset line J=460.43(∆a)0.5730 Crack extension (mm) 0 1 2 3 4 5 6 7 J value (KJ/m 2) 0 200 400 600 800 1000 1200 No.5 Power law regression line Blunting line 0.15mm Exclusion line 1.5mm Exclusion line 0.2mm offset line J=446.82(∆a)0.5110 Crack extension (mm) 0 1 2 3 4 5 6 7 8 9 10 J value (KJ/m 2) 0 200 400 600 800 1000
Fig. 1 indicates that the trend toward increased aging time as an increased ferrite phase area, which is linked to a reduction in the relative toughness of the material.
Since the JIC value of the HAZ of CF8M marks are higher than the CF8M base metal, the use of data from CF8M base metal could possibly be used to estimate the integrity from a conservative point of view without an extra elastic-plastic fracture toughness test of the HAZ of CF8M.

The sample frequency was selected 100Hz, and time duration is 30s, and the average of data was taken as the three-component coefficient.
Once the attack angles exceed stall angle, the separation of flow will lead out in a large scale, and the vortex layer will break away significantly to transfer the vorticity to the main flow field causing to the reduction of lift coefficient and the appearance of curve acmes as well.
Once the attack angle exceeds the stall angle, the flow will arise to a large scale separation as soon as it touches the deck, and generates prominent vortex in the back segment of bridge deck, leading to the increment of drag force and the reduction of lift force.

The variations in the fracture toughness were attributed to the reduction of the retained austenite amount and to the increase in the population density of SGCs in the microstructure after the SZT.
The main goal of the current investigations is to characterize the variations in the toughness and fracture toughness ledeburitic cold work tool steel Vanadis 6, as a result of different heat-treatment schedules (sub-zero treatment, tempering) and to relate them to the microstructural alterations, due to these treatments, like the reduction of the retained-austenite amount and increase in the carbide count [6, 8].
The mean values and the standard deviations of the obtained data were calculated.

The precipitation of secondary phases leads to a reduction of corrosion resistance because they deplete surrounding phases of Cr and Mo [1].
The specimens were then heat treated according to the data reported in table 2.
On the other hand, such reduction of performance of SAF 2304 in relation to the polarization tests, lies on the formation of a large amount of secondary austenite (γ2) that occurs together with the nitrides precipitation. [16] (figure 2).

Batch Yield strength σ0,2, [МPа] Tensile strength σв, [МPа] Rel. elongation δ, [%] Rel. reduction ψ, [%] I 524 635 26 72 II 477 574 22 79 Real microstructure was characterized on metallography specimens sampled from the 1/3 of the sheet thickness in Rolling direction (RD) – normal direction (ND) plane.
Aztec 3.1 and hkl Channel 5 software packages were used for acquiring and post-processing of EBSD data.
For the reduction of damaged surface layer, it was used 10 minutes forceless polishing with colloidal silica suspension 0,05 mm at last polishing stage.

Delamination in the layers ahead of the crack tip results in a reduction and redistribution of the local stress which makes cracks difficult to propagate through the composite.
A total reduction of 98% was achieved after all the preparation process.
The stress, σ, and the strain, ε, were converted from the recorded raw data according to the following equations[24]

From the data shown in table 1, we can see that the content of metal ions Mg2+, Mn2+, Fe3+, Zn2+, Cu2+ in unbleached pulps are reduced in varying degrees after sulfuric acid pretreatment, the removal efficiency is great.
Table 2 Effects of pretreatment on the quality of eucalyptus pulp pretreatment conditions brightness, %ISO increasing whiteness, %ISO hardness (K value） lowing rate of hardness, % viscosity, ml/g reduction rate of viscosity, % Un-pretreatment 42.02 - 9.89 - 844.3 - After A1 pretreatment 47.01 4.99 8.94 9.61 810.1 4.06 After A2 pretreatment 46.28 4.26 9.15 7.48 819.2 2.98 After A3 pretreatment 45.96 3.94 9.25 6.47 824.5 2.35 Notes: A1 1.0%H2SO4，A21.5%H2SO4；A32.0%H2SO4。
Table 3 The effects of acid pretreatment on photocatalysis bleaching pretreatment conditions brightness, %ISO increasing whiteness, %ISO hardness (K value） lowing rate of hardness, % viscosity, ml/g reduction rate of viscosity, % Un-pretreatment 84.69 42.67 3.16 68.05 670.9 20.52 After A1 pretreatment 81.13 39.11 3.69 62.69 570.5 32.43 After A2 pretreatment 82.34 40.32 2.95 70.17 579.9 31.31 After A3 pretreatment 82.00 39.98 3.10 68.66 570.0 32.49 Notes: A1 1.0%H2SO4，A21.5%H2SO4；A32.0%H2SO4。

Introduction According to the increasing demand for hydrogen in the petrochemical and chemical industries as a feedstock for a variety of processes such as methanol synthesis, Fisher–Tropsch synthesis, and as a reduction gas for the direct reduction of metal oxides, methane steam reforming (MSR) has been received many attentions worldwide especially for the reason of being the most widely adopted method to produce hydrogen [1].
The entire system was monitored and controlled in a fully-automated manner by Labview automation system (National Instrument, NI) equipped with the data acquisition hardware.

Data interpretation.
The dielectric constant of supercritical water increased with the increase of density [8], resulting in a reduction of solubility of organics in supercritical water.
To prove the accuracy of simulation, we check the steam enthalpy-entropy diagram since the pressure reduction process is an isenthalpic process.

., Ltd. 0.55 3.70 15 4.64 Data Time:2013-12-31 (2) The administrative jurisdiction of the energy enterprise group changes inversely with the risk each level confronts, which leads to the uncontrollable projects and value losses.
The internal audit of the energy enterprise group will also enter the emerging fields of social responsibility audit and energy-saving and emission-reduction audit
Internal audit department should strengthen the protection of social public interests, enhance the overall image of the enterprise through releasing social responsibility reports and carrying out audit activities such as energy saving and emission reduction.