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On the other hand, environmental factors have an important influence on the operating behaviour of equipment, since they favour the induction of corrosion or erosion-corrosion phenomena due to the flow of fluid circulated through installations at high temperatures.
The final surface polish is made by either electro-polishing or mechanical polishing with polishing felt and alumina polishing solution or diamond paste.
The creep phenomenon is dictated by factors such as temperature medium, stresses, time exposure & material properties.
- Replica R4 is characterized by a structure formed of ferrite and totally globulated perlite, inter-intragranular precipitation with most of the affected limits
Cheruvu, Degradation of mechanical properties of Cr-Mo-V and 2.25Cr-1Mo steel components after long term service at elevated temperatures, Journal of Metallurgical Transactions A, 1988, Vol 20A, Jan. 87-97

FOREWORD Geometry of the cut obtained in abrasive waterjet cutting processing (AWJ) which provides the cut quality represents one of the main issues affecting the accuracy of AWJ cutting precision [1,2].
This consistency is determined by type, quality and wear of the water nozzle and abrasive focusing tube; • properties of abrasive used. 2.
Chemical composition together with mechanical properties for this material are found in Table 1 [5,6] .
Table.1 Chemical and mechanical characteristics of the researched steel Chemical elements (wt. %) C Cr Ni Mn Si P S Mo Fe 0.02 18.2 10.1 1.75 0.63 0.028 0.024 0.08 69.188 Mechanical properties Yield strength Rp0,2 [MPa] Tensile strength Rm [MPa] Elongation A5 [%] Hardness HB ISO – V break energy at 25 ˚ C [J] 280 580 55 165 225 This type of processing, regarded as unconventional, generally provides a high degree of quality and productivity of cuts.
Qualitative analysis of AWJ factors affecting the surface roughness, Wissenschaftliche Beitraege, TFH Wildau, Germany, pp. 113-119, 2006

Microstructure and mechanical properties affecting crack growth behaviour in AA6060 produced by equal-channel angular extrusion L.W.
Tab. 1 Tensile properties, coefficients for Paris-Erdogan (Eq. 1) and fatigue crack threshold, R=0.1.
These findings point out clearly the dependence of crack growth properties on grain size and grain size distribution.
Charpy impact tests To characterize the material's fracture properties under impact conditions, instrumented Charpy impact tests have been performed, Figure 6.
This implies that the improved ductility and strain hardening capability of the optimized condition also had a positive effect on its crack propagation properties.

Tensile strength and Vickers hardness tests show that the steels with 2% of Si exhibit higher mechanical properties.
The differences caused on the oxidation behaviour and mechanical properties by the modification of the composition of the ferritic powders and the sintering atmosphere used are studied.
The mechanical properties of the materials (Fig. 3) are conditioned by the differences in the porosity and the grain size, and by the solid-solution hardening effect of the Si.
The 434L+2%Si stainless steels could have a decrease somewhat lower on their mechanical properties after oxidation that the 434L steel, but the differences found are not meaningful at all (Fig. 9).
 H2-sintered 434L+2%Si steels have higher mechanical properties than plain 434L steels processed in the same conditions, but they suffer higher mass gains at high temperature

Moreover by changing different loading parameters, several critical factors will be pointed out.
Secondly, based on the transmission calculation theory, we will study the main factors which can affect the driving performance directly.
Calculation Method To study a vehicle which driving on the ground, different forces and motion factors should be deep focused on.
However in order to check if the friction factor can real affect the results, different friction factor will be compared in the next section.
Then two friction factors 0.8 and 1.0 will be loaded and compared to each other.

With the same maximum particle size as ZCS1 and ZCS2, the mechanical properties of ZCS3 are increased.
In one word, the shape of aggregate is an important factor influencing the properties of SCC.
The properties of SCC affected with different shape of aggregate were tests based on the reference shape index value.
At the same time, as a result of better workability, the mechanical properties obviously increase.
Conclusions (1) The coarse aggregate grading remarkably influence the workability and mechanical properties of SCC.

Carbon membranes have high adsorption capacitiy with respect to its incredible properties such as unique structural, electronic, optoelectronic, semiconductor, mechanical, chemical and physical.
The morphological properties of the aligned CNT membrane were investigated with scanning electron microscopy (SEM).
Unfortunately, there is no consensus in the competitive adsorption of metal ions, as researchers have attributed their different affinities to different factors.
These factors are related to the properties of these ions in aqueous solution and could affect surface binding and interaction energies or the accessibility of surface centers, which can be linked to the size of the species adsorbed.
Qiu, Investigation of factors affecting adsorption of transition metals on oxidized carbon nanotubes, J.

From the microscopic point of view orientation and crystallization processes have the biggest influence on the mechanical and thermal properties of PET bottles.
More specifically, the properties of PET bottles depends on as many as 14 variables, however, in this paper they are not individually discussed.
The orientation of polymer chains and crystallization processes have the biggest influence on mechanical and thermal properties of CSD PET containers.
The ISBM number of parameters affecting the thickness profile and the quality of the bottles is very high.
There is a number of measurable characteristics of the bottle, such as thickness, mechanical properties, degree of crystallization, intrinsic viscosity, but they are not able to identify aesthetic "betterness" of the bottle.

Regarding dangerous defects such as cracks and lack of fusion in the joint weld of conical head and tube of grid structures and presented problems in NDT, research on usability of the defective grid structure was carried out through theoretical computations and experimental tests of mechanical properties of defective welds with specification of Φ60×3.5mm.
Under these conditions, the relationship between critical J-integral JIC and the critical stress intensity factor KIC is as Eq.2[1]
Mechanical behavior tests of the specimens were carried out after welding.
It can be seen from the topography of the fracture (as shown in Fig 5 and Fig 6) that all the samples was broken at the Weld heat affected zone, and all the fractures initiated at the position of prefabricated defects.
(2) The tensile strength of the tube is less than that of weld, after initiating, cracks extended towards the parent material, and the specimens finally ruptured in the heat affected zone of the base metal.

In this work, the properties of the cross-linked epoxy resin compound at high temperature were studies by MD simulations.
The relations of the glass transition temperature (Tg) and properties of the cross-linked epoxy resin were investigated.
The relations of the glass transition temperature (Tg) and the properties of the epoxy resin were investigated. 2.
Other factors including the degree of cross-linking, the network topology and the free volume also affect the glass transition temperature[11].
Conclusion In this paper, the properties of epoxy resins are investigated by MD simulations.