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For ceramic matrix composites produced by PIP process, the fiber/matrix interface plays an important role in determining composite mechanical properties and fracture behavior and it is a key factor affecting material properties.
And subsequently Cf/SiC CMC specimens of excellent properties were manufactured Experimental Materials preparation.
Results and discuss Effect of heat-treatment temperature on materials structure and properties.
The microstructure and mechanical properties of Cf/SiC samples including three-point flexural strength and fracture toughness were determined and analyzed to investigate the effect of PyC interface on the structure and properties.
Conclusions (1) Mechanical properties of Cf/SiC composites are greatly improved when carbon-fiber preform are processed by high temperature heat-treatment in preparing specimens utilized polycarbosilane/ diviylbenzene solution as precursor.

Introduction Laser beam,electron beam and plasma beam，all being high energy density beam with the properties of high energy density and the strong penetrating, have been widely used in the field of metal surface modification [1].
Using this technique for surface modification on metallic materials can significantly improve the mechanical properties of materials.
Plasma arc surface hardening heat treatment process involves many factors, the operating current, scan speed, nozzle workpiece spacing, nozzle diameter, the working gas flow, electrode shrinkage, electrode shape, electrode and nozzle concentricity and other factors will all affect the results of the surface hardening.
Divide the three factors into three levels, using the orthogonal diagram L9(33), we get orthogonal experimental table and the experimental results that shown in Table 2.
In the Table3, HI means the sub of the test index what corresponding with every factor. i=1,2,3…HR(DR)=max Hi(Di)-min Hi(Di) Factors Indexes Table 3 Orthogonal analysis Operating Current Scanning Speed Workpiece nozzle Spacing (A) (m/min) (mm) The hardness of the Hardened layer H1 H2 H3 HR 2042.3 2167 2280.5 238.2 2279.9 2136.5 2130.4 149.5 2140.1 2282.7 2053 229.7 Depth of the hardened layer D1 H2 D3 DR 0.53 0.65 0.61 0.12 0.73 0.58 0.48 0.25 0.61 0.60 0.58 0.03 the current value affect to the hardened layer.

The crack not only affects the casting process but will also affect the smooth anterograde slab quality.
In continuous casting process, molten steel solidified shell subjected to hydrostatic pressure, bending, impact resilience and straightening and other factors, when the force exceeds the slab temperature ultimate strength and ultimate strain, it is easy to crack; When the resultant force is less than the limit of the material under high temperature performance to ensure the continuity of the solidification, effectively prevent the slab surface and internal cracks [2].
Lots of studies show that steel mechanical properties (strength thermoplastic and heat) is of the most important indicators of the impact of crack formation in the casting temperature range [3].
Aiming at high temperature mechanical properties of 50Mn2V slab, this research uses Gleeble-1500 testing machine to test, explores specimen fracture for machine rational and, this study is benefit for the development of rational 50Mn2V casting process to prevent the crack generation and improve casting billet quality.
Fig.2 shows the experimental scheme: έ=6.46×10-3 or 1.3×10-4 Temperature/℃ Time/s 3℃/S 5min 3min Experiment temperature 10℃/S 1465℃ Figure 2 Gleeble-1500 high temperature tensile test Experitment results and analysis High temperature tensile parameters Experimental liquidus temperature, cooling rate, strain rate parameters influence significantly on high temperature mechanical properties, simulation of continuous casting slab solidification process, the sample is heated to a temperature above the liquidus and then cooling to ensure t sample austenitizing; cooling rate, the corresponding relationship between continuous casting cooling intensity directly affect the grain size of steel bar separation material size, affect the steel high temperature mechanical properties result; the steel rod section shrinkage (RA) is not particularly affected obvious under strain rate <10-2 conditions, but the speed will increase the strain on the tensile strength of steel curve shift, and

It was emphasized that optimizing interference fit and material properties is essential for enhancing bushing durability and reliability in harsh operating conditions.
The material chosen for the con-rod should have good mechanical properties for getting optimal performance[29]. “42CrMoA has a good combination of strength and toughness in the quenched and tempered conditions” [2].
Fig. 3 Boundary conditions. 2.2.2 Orthogonal simulation test Selection of experimental factors A number of factors affecting the interfaces of the interference fit between the con-rod and bushing significantly influence the fretting characteristics of the bushing, including relative slip amplitude between the interference fit surfaces, contact load, geometry, tangential force, friction coefficient, and so on.
Friction and interference coefficient are two adjustable factors that can be realized throughout the machining and assembly processes.
Robusto, Tribological properties of connecting rod high strength screws improved by surface peening treatments, Metals 10 (2020) 344. https://doi.org/10.3390/met10060344 [5] Q.

Factors that have effect on sol preparation and films forming were investigated.
The developed technology of multistep temperature treatment allowed film properties stabilizing.
Their redox properties can be altered within broad limits through changing the heteropolyanion composition.
This fact results in intra-molecular redox reaction which sharply change electrophysical properties of polyoxometalate.
There are many technological factors that have an influence on adsorption value of films, such as: solution content, film formation conditions, temperature influence and technological environment effect.

Machine parameter setup is the most important aspect that affects product integrity, because it has a direct and significant effect on the physical and mechanical properties of the part.
In contrast, Domingos (2012) reported that the deposition and extrusion velocities have the highest influence in terms of Road Width (Raster Width) which in turn affect in the porosity and mechanical properties.
Shape and size are both nozzle features, which specify the extruded material profile, consequently affecting the part quality.
Nano-additives improve the mechanical, thermal and conductivity properties.
The results of the tensile tests and the dynamic mechanical analysis indicated that the VGCFs provided additional stiffness and strength while not appreciably affecting the viscous response of the ABS.

The energy depends on many factors, for example: on geometric structure of the surface, physical properties of materials, method of preparation and modification of surface layer [3,4,6].
In such cases, we can not used other methods, which results are obtained by averaging the properties of the material throughout its mass, because the modified surface layer has different properties than other materials.
Other factors not related to the interactions at the interface (strength of the adhesive itself, of combined materials) also affect the strength of joints.
Results presented in Fig. 5 indicate that the method of surface preparation, including ozonation, is a factor substantially affecting the energy state of the surface layer and particularly affects its components.
Rudawska, Adhesive Properties, Scanning Electron Microscopy, InTech, 2012, http://www.intechopen.com/books/scanning-electron-microscopy/adhesive-properties.

The results prove the ability of the formulated composite to improve the mechanical properties when compared with portland/water cement slurry.
Another operation that may affect the mechanical properties of the cement slurry is acidification.
The portland/polymer composites in aquous dispersion, the polymer modify its reologic, mechanical and physical-chemistry properties.
This is due the formation of C-S-H, that is a product of responsible hydration for the mechanical properties of the cement in elapsing of the age of your maturation.
Compressive strength graphic of the slurry portland/water and portland/lpolyurethane composites. the mechanical properties, there was not a significant variation after the acid attack in the composites.

Burn resistant Ti alloys possess good burn resistance and mechanical properties.
It has good burn resistance and not bad mechanical properties (Table 6).
These two alloys have good mechanical properties (Table 7).
The burning behavior and its affecting factors of titanium alloys were deeply and systematically researched by DCSB (direct current simulation burning) method that was invented by the present authors in NIN.
Factors influencing alloy's creep mechanism are complicated.

The hardness properties of samples were between 477 and 551.4 HV (0.1).
Response in this design is hardness properties.
Statistical analysis of hardness properties is shown in Table 2.
Contour plot in Figure 1(b) shows desirability factor from optimization of hot press forming of 22MnB5 steel corresponding to hardness properties.
Effect of cooling rate on the high strain rate properties of boron steel.