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Microstructures of these steels are often complex, consisting of mixtures of different ferrite morphologies, and therefore, wide combinations of mechanical properties can be achieved by controlling them [2].
In addition to adjusted composition, a desired balance of mechanical properties can be achieved by properly designed thermo-mechanical control processing (TMCP) including controlled rolling followed by accelerated cooling [3].
In the case of Mo-Nb microalloyed steels, RCR has been reported to lead even to better strength properties than the conventional TMCP route [4].
A regression equation obtained for the impact toughness was as follows Eq. 2: CV [J] = -1486C + 535Nb + ∆T + 65, R2 = 0.77 (2) where C and Nb are in wt-% and ∆T is the temperature difference between Tnr and the temperature of the last pass in °C In consistent with the physical simulation tests, C was found to be the most significant factor to control the microstructures and consequently also the mechanical properties of the investigated steels.
The hardness (i.e. strength) properties are relatively insensitive to retained deformation below Tnr, but a refinement in the grain size is obtained.

The nature, mechanical characteristic and other properties of the base metals introduce also certain requirements for the FSW equipment, because FSW is a mechanical process.
Other important factors are also taken into account: sizes and positioning of the sheets (up or down), rolling direction of the sheets, room temperature, temperature of the sheets, material and temperature of the support plate.
The nature, mechanical characteristic and other properties of the base metals introduce also certain requirements for the FSW equipment, because FSW is a mechanical process.
Main technical characteristics of the FSW equipment Number Technical characteristics of the motor for the tool rotary motion Experiments no. 1 - 4 Experiment no. 5 [5] 1 Rotational speed n [rev / min] 800 – 1,200 200 - 400 2 Rotation direction clockwise and anticlockwise 3 Mechanical power PMrot [kW] 2.98 - 3.62 2.87 - 7.25 4 (Drive) Torque Mrot [Nm] 26.43 - 35.58 92.00 - 230.10 Factors that Influence the FSW Process Other important factors [1, 6 – 11] are also taken into account: sizes and positioning of the sheets (up or down), the rolling direction of the sheets, room temperature, temperature of the sheets, material and temperature of the support plate.
Sorensen1 (1Brigham Young University, Provo, UT, USA); 1Ben Nelson and 1Sam Sanderson: ”Properties and Structure of Friction Stir Welded Alloy 718”.

It consists one of the most important factors for high restoration parts durability.
By a relative research [5, 6] it is shown that drying shrinkage and thus composite mortars final strength, is affected by a range of factors as the fiber volume percentage, the temperature and the relative hydration.
It is reminded here, that factors affect the final properties of reinforced mortars are the type of fiber, the fiber volume percentage, the physical features of fiber and especially its length to diameter ratio [4].
The worse workability of fresh mortars will lead to increased internal flaws and high porosity values and thus to worse physico-mechanical properties.
Naqash, Mechanical Properties of Polypropylene Fibers Mixed Cement-Sand Mortar, J.

The main factors which determine this status are the limited tool life, high generated cutting forces (torque) and the high temperature in cutting zone caused by low thermal conductivity as well as chemical reactivity with the cutting tool.
Besides cutting conditions, the tool and the cutting edge geometry significantly affect the value of torque.
Among many titanium alloys, Ti6Al4V is extensively used mainly in aerospace applications due to its favourable mechanical properties.
Most significant effect from investigated factors on measured response Mz has the feed parameter (variable).
Fig. 3 Influence of investigated process factors on Mz torque By regression and correlation analysis, the mathematical model to calculate torque Mz by investigated process factors is as follows: (1) Surface response obtained from multi – level factorial experiment is shown in Fig. 4.

The effects of prestrain on the mechanical properties of steels are important for various steel structures that will have been exposed to plastic deformation.
Accordingly, a study was undertaken to determine the prestraining effects on the variations in fracture toughness (mechanical properties, Charpy V-notch impact properties and crack tip opening displacement) with structural steel Q235B and Q345 welded joints.
Results and Discussions Tensile Properties.
Impact Properties.
Fracture Mechanics Properties.

The fabric made by fractal fiber has the properties of crease-resistance, wash and wear, non-ironing, conduction of moisture, good mechanical property, no polar light , and it can be dyed under the condition of normal pressure, etc.
There are different mechanical property between cotton fiber and fractal polyester filament.
This affected the strength of the cotton / fractal polyester filament twisted yarn.
Mechanical property includes breaking strength and breaking elongation rate.
It combines good properties of natural fiber with synthetic fiber’s.

Introduction Machinable ceramics have many excellent properties, such as small density, wear resistant, corrosion resistant, and it can be machined to mechanical workpieces of complicated shape.
In glass ceramics machining, the key problem is investigation cutting factors and the influence law.
The affecting law of materials removal rate was studied while cutting conditions changed, such as cutting speed vc, cutting depth ap and feed speed νf.
The number of factors n=3, experiment times m=15, when α=0.05, and Q=0.93411, U=28.7728, Lyy=U+Q=29.6569, thus From F distribution table, find critical value Fα: F0.05(3,11),.
In turning glass ceramics, the materials removal influence factors of cutting speed, cutting depth and feed speed were study

This experiment study on modifications methods effect of rubber mortar mechanical properties, and the rubber powder and cement base material interface are analyzed through scanning electron microscopy and infrared spectra.
Mortar rubber mechanical properties test results Reference material mix proportion: cement-sand ratio is 1:3; water-cement ratio is 0.5.
Conclusions Powder surface modification methods and powder surface modification cost control are key factors affecting the development prospects of rubber cement based materials.
,Savas B.Z.Mechanical properties of concrete with ground wastetire rubber[C].Transportation Research Board,1996:66-72
[5] A.Benazzouk, O.Douzane, K.Mezreb, M.Queneudec.Physico-mechanical properties of aerated cement composites containing shredded rubber waste [J].

For example, in the mechanical field, it can be used to detect microscopic morphology of the surface of ultra-precision machining.
In the field of micro-electromechanical systems, it can be applied to the detection of micro-mechanical adhesion between the components.
In operation, the probe tip and the sample contact surface of the holder registration state, and the tip geometry morphology are important factors affecting the image resolution.
Thus tip wear will not only reduce the quality of imaging, but also bring artifacts, seriously affecting the subsequent data analysis.
The working principle of the atomic force microscope and Nano-contact force calculation model The working principle of the atomic force microscope is shown in Figure 1, which is fixed with one end, fitted to the tip of the other end of the weak biasing force of the resilient cantilever, which is very sensitive to the test sample surface topography or other surface properties.

The mechanical properties of the post-weld cold worked Al RSW were investigated, including the experimental results of fatigue.
The mechanical properties of the "as-received" Al 5052 are shown in Table 2.
Mechanical properties of Al 5052.
The ½ model had three different segments each with its own material properties, the segments are: weld zone, heat affected zone (HAZ) and base material.
Sheppard.: Stress intensity factors in spot welds Engineering Fracture Mechanics, 70 (2003) 671-684.