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The microstructures as well as the effect of starting powders size on the mechanical properties and thermal fatigue properties were investigated.
The mechanical properties and thermal fatigue resistance vary with the addition of α–Si3N4 powders.
In Hasselman’ theory, some parameters are introduced to evaluate resistance of crack initiation and propagation, and the fracture strength is one of the most important factors[3].
Research has highlighted that the final properties of nano- or ultra-fine non–oxide ceramics are strongly affected by the characteristics of the staring powder [6,7].
The addition of α-Si3N4 powders affect the mechanical properties, and the maximum value are obtained when the amount of α–Si3N4 powders is 40wt

Effect of Welding Speed on Mechanical Properties of Friction Stir Welded AA 6082-T6 Al Alloy Dhananjayulu Avula1,a*, D.K.
The welding speed depends on several factors, such as alloy type, rotational speed, transverse speed, depth of penetration, and joint type [6].
In the present study the mechanical properties and micro structural aspects with various welding speeds have been investigated.
Tensile properties.
Tensile properties of friction stir welds.

In this study, mechanical properties of the AAO structures are measured using the nano-indentation method.
Nano-indentation technique is one of the most effective methods to measure mechanical properties of nano-structures.
Finally, relationship between the mechanical properties and the porosity change is also investigated.
The mechanical properties of 0 % porosity mean the alumna's own properties except the pore portion.
These mechanical properties and empirical coefficient are shown in Table 1.

Based on the microstructure observation, mechanical properties were discussed. 1.
The change in phase interface and dislocations after annealing is the fundamental reason for the change in mechanical properties [10-13].
After annealing, the recovery and recrystallization occur, the dislocation density decreases, and the lattice distortion decreases, which are all factors that cause the strength to decrease.
The mechanical and magnetic properties of copper-iron alloys were characterized, and the electromagnetic shielding properties were discussed.
It has excellent electrical conductivity, ferromagnetism, and good mechanical properties.

Length and diameter of basalt fiber both influence the mechanical properties.
The basalt fiber content is the single factor for each, and the research on mechanical properties of basalt fiber reinforced RPC is by changing the fiber content.
Test results and analysis Static mechanical properties.
As to the static mechanical properties and flexural impact properties, basalt fiber improve flexural impact properties is much more significant than improving static mechanical properties of RPC, which illustrates that the main role of basalt fiber is to improve the toughness of constructional element by absorbing impact energy.
Experimental Study on Mechanical Properties of Basalt Fiber sprayed Concrete.

It was also found that the specimens had the best mechanical and corrosion properties after heat treatment at 1150ºC.
Taking advantages of these positive factors, this alloy has been mainly used in chemical process, pollution controlling and metallurgical industry, such as radiant tubes of a continuous-annealing line for cold rolled sheet [1].
Song and Nakata evaluated the mechanical properties of friction stir welded and post- heat-treat Inconel 625 alloy.
They find that applying heat treatment after FSW led to the improvement of mechanical properties of the welds [5].
Otherwise, the existence of laves phase was also detrimental to the mechanical properties.

Investigation of Factors Affecting Adhesion Strength of Adhesive Layer to Substrate Surface V.
Insufficient accuracy and reliability of machine calculations is often associated with a lack of full understanding of the processes of loss of operability of units and parts of equipment, as well as with the complexity of the computer or ignoring a number of important practical factors.
This indicates that reinforced polymer compositions have the greatest prospects, which exhibit an increase in their strength properties due to the integration of elastic fibers into soft (matrix).
Analysis of factors affecting the strength of fixed bonds assembled using metal-polymer compositions // International Scientific Conference “Energy efficiency and energy conservation in technical systems-2020” /Rostov-on-Don/ DSTU/ 2020. https://doi.10.1088/1757-899X/900/1/012009
Scientific basis of technology of mechanical engineering / A.G.Suslov, A.M.Dalsky. - Moscow, 2002. - 684 Р.

The results of studies of selected properties of grain products, affecting the intensity of the wear of materials of the handling facilities in the port grain elevator have been presented in the article, as well.
These include factors related to: - the type and properties of transported cargo, - method and procedure for sending cargo, - the impact of climatic and environmental factors on system components.
The authors pay attention primarily to the lack of standardization of methods for testing the mechanical properties of cereal grains.
Laskowski (editors): Mechanical Properties of Granular Agro-Materials and Food Powders for Industrial Practice.
Horabik: Characterization of mechanical properties of particulate solids for storage and handling. 1-145, (2005)

Correlation Between Mechanical Properties and Porosity Distribution of A356 in Gravity Die Casting and Low Pressure Die Casting D.
Presence of defects in any production part caused by bad gating and wrong feeder placement can make the properties unpredictable and significantly affect the mechanical properties of aluminium castings, especially the ductility and fatigue properties.
The low porosity levels in low pressure die casting (Fig 3) have not resulted in high mechanical properties.
Regardless of the casting method (no matter how perfect the method or the filling could be) and the gas content, it is the bifilm content of the melt that affects the mechanical properties.
The cleanliness of the melt has a major affect over the properties of the cast part.

So these two factors affect the thermal and mechanical properties of the composites and hence cannot be neglected[1-6] .
A very important topic in the use of composites is the occurrence of interlaminar cracks for unidirection carbon fibre/epoxy composites, and the environmental factors have greatly influenced on the composite's mechanical property[7] .
One of the goals of this work is to investigate the most affective factor of all environmental factors on the mechanical property of carbon fibre/epoxy composite.
Normal table test The test temperature 、 the solution concentration and the immersion period were important factors to the mechanical properties of samples.
Friedrich, Mechanical properties and failure behaviour of carbon fibre-reinforced polymer composites under the influence of moisture, Composites part A 28A (1997) 595-604 [7] R.