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Introduction As a new kind of lightweight material that integrates structure and high vibration-damping performance, the magnesium alloy is widely used for manufacturing of various mechanical parts, especially vehicle parts.
For damping mechanism of the magnesium alloy, a recent study shows that damping of the magnesium alloy at room temperature is dislocation damping, and breeding and networking process of the dislocation inside the magnesium alloy under shear stress are major factors of affecting its damping characteristics[3].
References [1] MI Lin,TIAN Tie,MAO Xingzi: Journal of Mechanical Engineering. vol. 45(2009), pp.272-278
[3] TIAN Tie,MAO Xingzi,MI Lin:Materials for Mechanical Engineering. vol.35(2011),pp.1-3,7
Beijing: Science Press, 1983.The micro theory of metal mechanical properties

The FCG depends on several factors such as stress intensity factor (K), crack length (a), number of cycles (N), stress intensity factor range (del K), load (P), frequency (f), and stress ratio (R).
The empirical modelling considers the crack driving forces/factors and develops an empirical solution while considering various factors for crack propagation [6].
Mirza et al. also studied the microstructure and fatigue properties of such alloys [10].
Mechanical properties of the material [14].
Microstructure and fatigue properties of ultrasonic spot welded joints of aluminum 5754 alloy.

Careful structural investigations and mechanical testing of the coatings are required to find the interrelation between the definite structural characteristics and exhibited properties.
This type of the dependence of the wear resistance on the amount of the entered energy also assumes the presence of additional factors.
To establish these factors, the structural investigation and measurement of alloying element concentrations in different phases of the coatings were carried out.
The coating obtained with the average amount of the entered energy exhibits the best combination of mechanical properties and wear resistance.
To obtain the coatings with given combination of properties, all structural factors determining these properties should be taken into account.

These optimized recipes showed positive influence mainly in the long-term on mechanical properties.
Therefore, they show different properties.
These characteristics are variable and depend on many factors, such as the type, origin, and the type of combustion, its technology or the type of fly ash separation.
Also, it was concluded, that the substitution by secondary raw materials have a very positive influence on the long-term mechanical properties.
Furthermore, the set of monitored physical-mechanical properties will be extended and the chemical resistance of the new designed recipes will be tested.

This manufacturing process allows for precise control over the microstructure of the steel, leading to improved mechanical properties and performance.
The basic mechanical properties of the obtained materials are shown in Table 2.
These inclusions lead to local stress concentration, inducing crack nucleation and propagation near the region, which is a key factor affecting the fatigue impact life.
Experimental Study on Dynamic Compression and Shear Properties of Ultrahigh Strength Steel AerMet100[C].
Effect of Tensile Overloading on Impact Fatigue Properties of Ultra-high Strength Steel A-100[J].

For accurate measurement of the dynamic fracture properties, we need to thoroughly understand the contact situation of the three-point bend specimen, with the loading apparatus.
Introduction The robust design of structures under dynamic loading requires material’s dynamic fracture properties to be included.
At present, Hopkinson pressure bar apparatus with different arrangements is used for measurement of material’s dynamic fracture properties.
According to experimental work of Guo et al. [5, 6] the dimension of the specimen and span are important factors that affect specimen’s contact state during loading.
Linear-elastic behavior is considered for the model, with material’s mechanical properties as, Modulus of elasticity: E =210 GPa. , Poisson ratio: µ = 0.3 and density: ρ = 7850 Kg/m3.

Dimensional analysis was utilized to identify the scaling variables affecting the stresses.
Introduction For technological application, depositing protective coatings onto the surface of a load-bearing substrate has been widely used to enhance certain mechanical properties [1].
The objective of this paper is to find what and how parameters affect interfacial stresses and thus possible coating debonding.
The tempered LQZs will experience phase transformation and hence result in volumetric shrinkage, the degree of which depends on many factors, for example, carbon content, temperature, etc.
Guo, Practical Handbook of Thermophysical Properties, Chinese Agricultural Press, Beijing (1986) (in Chinese).

Heat treatment condition, including the temperature and hold time of nucleating and crystallizing, is one of the key factors that affect the microstructure and properties of LAS glass-ceramics.
Preparation, structural and thermo-mechanical properties of lithium aluminum silicate glass-ceramics [J].
Thermal expansion properties of some synthetic lithia minerals [J].
Preparation and thermal properties of P2O5 doped Li2O-Al2O3-SiO2 glass-ceramics [J].
The study of the properties and crystallization on LAS glass-ceramics.

Various types of rubber can be used for modifications that can improve the mechanical properties of asphalt, including crepe rubber.
To increase the lifetime and durability of pavements, improvement of asphalt mechanical properties must be done, such as addition of polymers.
Phase separation in modified asphalt products is influenced by several factors, including gravity, diffusion, density and viscosity.
This phase separation is influenced by many factors including gravity, diffusion, density, and viscosity.
However, storage temperature is the main factor affecting the phase separation between asphalt and polymer [7, 31, 32, 35, 36].

The orthogonal test temperature, time and the amount of addition of rare earth are three factors.
Test Methods 3.1 Optimization of Boronizing process parameters Temperature, time and amount of addition of rare earth are affecting factors, and three levels of each factor were selected, such as listed in table 1.
Table 1 　The factors and level Level Temperature /℃ Time /h Amount of Addition of Rare Earth (wt%) 1 2 3 870 910 950 3 5 7 0. 5 1 1. 5 It could be seen from table 2, that temperature is the most important factor to affect the carbonitriding layer depths.
[3] Cui Kun: Steel materials and non-ferrous metal materials(mechanical industry press, beijing 1985)
[7] Liu ChangLu, Wang LiFeng: Boron and rare earth powder together and the properties of boronizing layer.