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Effect of Electron Beam Welding on the Microstructure and Mechanical Properties of Low-Cost Titanium Alloys S.V.
Specifically, titanium has the highest mechanical properties in relation to its density among structural metals, excellent corrosion resistance, good biocompatibility (bio-inert) and maintains its mechanical properties at relatively high working temperatures [3-5].
Mechanical Properties The mechanical properties of welded joints (Table 2) of low-cost titanium alloy Ti-2.8Al-5.1Mo-4.9Fe obtained by EBW, allowed to conclude that the lowest values of strength are obtained in sample #6.
Kim, Mechanical and Oxidation Properties of Ti-xFe-ySi Alloys, Materials Science and Engineering A 328(1-2) (2002) 161-168
Effect of TIG-welding on the structure and mechanical properties of the pseudo-β titanium alloy VT19 welded joints.

The factors revealed no obvious difference in affecting tensile strength.
By introduce of microcell in fiber/polymer composites, fiber/microcellular polymer composites with high mechanical properties and light weight would be obtained.
The factors affecting tensile strength showed no obvious difference.
Curing agent content was the major factor affecting impact strength.
The factors revealed no obvious difference in affecting tensile strength.

The mechanical properties such as ultimate tensile strength, yield strength, percentage elongation and hardness have been studied for the hot extruded samples.
The effects of C/TiO2 molar ratio on the reaction processes, activation energies and mechanical properties of the resulting materials were investigated [11].
Hence the present work aims to study the mechanical properties and microstructure of the Al-TiO2 composites after hot extrusion. 2.
Hussami, A study of densification and on factors affecting the density of Nix–Fe100−x nanopowders prepared by mechanical alloying and sintered by spark plasma, Int.
Xie, Reaction pathways, activation energies and mechanical properties of hybrid composites synthesized in-situ from Al-TiO2-C powder mixtures, Mater.

INTRODUCTION In recent years, bimaterials and composites have been widely used to satisfy the requirement for material properties of engineering structures [1].
Exponent p varies with material properties and geometrical condition.
Ordinate of figures shows absolute value of stress intensity factors 1K and 2K normalized by a �0 .
CONCLUSIONS For bonded dissimilar materials under mechanical loading, relation between stress intensity factors 1K , 2K and the intensity of free-edge stress singularity �K is examined numerically and theoretically.
Sih, Handbook of Stress Intensity Factors Vol. 1, Lehigh University, Pennsylvania, (1973) 15.

Enhancement Mechanical Properties of Polymers Reinforcing by Nano Graphene Karrar A.
Introduction There are many factors affecting the manufacture of industrial, medical and military applications, and the materials manufactured for them may be the basis for this.
Graphene is an important material that improves the mechanical properties, which will be discussed and researched and its effect on the properties.
The addition of nano-graphene material improves mechanical properties clearly.
Zhang, Mechanical Properties of Epoxy and Its Carbon Fiber Composites Modified by Nanoparticles, J.

Machining induced residual stress is influenced by many factors.
Extensive studies on the influence of cutting parameters, tool parameters, as well as basic properties of materials have been carried out during the past decades, while another important factor, initial stress distribution in workpiece, was often ignored.
Introduction Residual stress after machining has significant influence on fatigue life, corrosion resistance, abrasive resistance and many other properties of a machined part [1, 2].
Material model and FEM simulation setup The material used was SCM440H, a low alloy steel in Japanese Industrial Standard, and its chemical composition and mechanical properties are listed in table 1 and table 2, respectively.
Basic Physical Properties of SCM440H Density Hardness Thermal conductivity Thermal Capacity Young’s Modulus Poisson’s Ratio [kg/m3] [HB] [W/(m·K)] [J/(kg·℃)] [Pa] 7820 341 36.37 583.9 2.1×1011 0.3 The material constitutive equation is a key factor influencing the accuracy in FEM analysis of cutting process.

The characteristics of reinforcing fibers used in biocomposites, including source, type, structure, composition, as well as mechanical properties, will be reviewed.
The variety of biocomposite processing techniques as well as the factors (moisture content, fiber type and content, coupling agents and their influence on composites properties) affecting these processes will be discussed.
Their influence on mechanical performance (tensile, flexural and impact properties) will be evaluated.
All this factors influence their price which is lower than conventional raw materials.
They come from animal, vegetal or mineral sources and their use depends on many factors such as: type of matrix used, desired properties, economic part, environmental impact, their compatibility and so on.

Mechanical and tribological properties of composite systems were tested.
When CF was used as the EK reinforced filler, the mechanical properties of EK composites couldn’t be enhanced obviously, and the tribological properties were reduced.
Therefore, CF can’t obviously improve the mechanical properties of CF/EK composites [4].
This becomes a major factor to restrict friction material properties.
When CF content is lower, it can slightly improve the mechanical and tribological properties of composite materials.

Such damage is defined as heat affected zone (HAZ).
Tensile Properties.
As the result, it can be assumed the less independent of the laser source properties such as wavelength and fiber orientations.
Fatigue Properties.
Summary The effect of cutting processes; mechanical cutting, pulsed-CO2 gas laser cutting and 350W-type or 2kW-type CW single-mode fiber laser cuttings, on the static tensile properties and the fatigue properties was evaluated.

P-type thermoelectric material Si0.8Ge0.2 was fabricated by mechanical alloying(MA) and Hot-Press Process(HP) The effect of Boron(0.25~2wt%) addition on the thermoelectric properties of p-type Si0.8Ge0.2 alloy was reported.
The S and σ are determined by the electronic properties of the material and are often combined in the formula S2σ, which is called the "power factor".
The purpose of this study, therefore, is to improve the Z value by controlling the thermoelectric properties with dopant content.
It shows that the excessive dopant concentration had a positive effect on thermal conductivity properties.
Conclusions The effect of boron addition on the thermoelectric properties of Si0.8Ge0.2 alloys prepared by Hot press (HP) process has been investigated and following conclusions have drawn. 1.