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The oxygen atoms interact with both the hydrostatic and shear stress fields dislocations, affecting both edge and screw dislocation motion [8] [9].
The effect of the interstitials on wrought and cast titanium is well published, but the relationship between interstitial levels and mechanical properties in metal injection moulded titanium is still not well understood mainly because of other factors such as porosity and microstructure in MIM parts.
Void coalescence, voids nucleation, grain sizes can be additional contributors with fracture strains interacting with these factors unique to MIM.
Scully, The effect of residual interstitial elements and iron on mechanical properties of commercially pure titanium, Mater.
Griffin, Effect of oxygen and hydrogen on mechanical properties of commercial purity titanium, Int.

STUDIES ON SOLID SOLUTION OF Fe50-Cu50 COMPOUNDS BY MECHANICAL ALLOYING Zhanwen he School of Mechanical EngineeringWuhan Polytechnic University,Wuhan,China email hezhanwen1@sohu.com Key words: Fe-Cu; MA;Solid Solution Abstract.This paper discusses Fe50Cu50 composite powder mechanical alloying of morphology and solution condition, through to the mechanical alloying Fe50Cu50 after composite powder on scanning electron microscopy and distribution analysis has determined its morphology and Fe -Cu the solution conditions.
Introduction In metal bond of diamond tools, iron as the main group element added to the copper base binder in metal bond diamond tools in the application is common, but by Fe, Cu mutual solubility limit, greatly affected the metal bond of diamond tools used in [1].
According to the classic solution theory, the atomic radius and electrochemical properties of two kinds of metal elements, the closer the forming substitutional solid solution, the higher the risk of but different Fe - Cu system.
Fe and Cu atomic radius and electrochemical properties are very close, Cu atom radius: 1.28 Mr; Fe atom radius of 1.27 angstrom.
In the scanning electron microscopy analysis, in order to strengthen the comparative, select the same magnification factor of (4000).

The method takes into account the physical and mechanical properties of the material, including modulus of deformation, creep, and compressive strength.
The main factor is the layered structure of the material, which forms the anisotropy of properties and the uneven distribution of stresses [6, 7].
Kovalevska, Parameters of fire-retardant coatings of steel constructions under the influence of climatic factors.
Feng, State-of-the-art of mechanical properties of 3D printed concrete.
Tan, Anisotropic mechanical properties of extrusion-based 3D printed layered concrete.

Different factors were taken into consideration: the type of prestressing tendons and the shear span ratio.
The shear failure modes and the influence of different factors on shear behavior were investigated in details.
The properties of the steel cables and CFRP tendons were shown in Table 2.
The most important factor to affect the failure modes was the shear span ratio.
Different factors were taken into consideration.

Again, compatibility characteristics and properties of biodiesel fuel are important for materials on the engine parts, and little information is available on this aspect.
The fuel evaluation properties of the biodiesel fuel (B100) purchased still need to be conducted to assure the quality of the fuel is following the standard method, ASTM D6751[12].
As a result, the identified factors promoting material degradation such as water content, total acid number and oxidised products determined from these standards may not necessarily be present in the actual fuel system.
Thus these factors lead to a great practical barrier that proving compatibility and durability are generally very expensive.
The sampling points were located before and after the tested piece for fuel properties determination and results comparison purposes.

Test materials and test design In this study, 70# base asphalt is used, and the basic properties are shown in Table 1.
Basic properties of bitumen properties Penetration（25˚C，100g,5s /0.1mm ductility (15˚C)/cm Softening Point /˚C density(15˚C) g/ cm3 Specification 60～80 》100 46 Testing 74 110 46.0 1.032 Table2.
Basic properties of the four fibers properties density（g/cm3） Tensile strength（Mpa） Melting point（˚C） Elongation at break（%） Oil absorption rate（%） A Fiber 1.32 517 249 33 3.88 B Fiber 1.46 <300 >200 18 6.04 C Fiber 2.43 3000~4840 1450~1500 31 0.88 D Fiber 1.83 — — — 1.64 Table3.
According to the similar or different levels of development trend of different factors, this method could determine the main factors affecting the target value through calculating the relational degree between the target and the factors.The general procedure of the grey relational analysis is as follows[9]: (1) Specify the reference data column and define a set of discrete sequence: (1) (2) Where is sequence of parent-factors; is sequence of sub-factors
First, initialize the data in Table 4, then set differencing sequence based on various influencing factors.

This development is caused by two factors.
The decrease in the size of the metallurgical notch results in a considerable improvement of the mechanical-technological properties of the welded material MS1200.
Consequently, an objective of future investigations is to determine the extent to which the mechanical and technological properties of the weld are affected by the decrease in zone width in combination with the alteration in the geometry of the coarse-grained zone.
In a further step, investigations are planned for determining the effect of the upset pressure on the mechanical and technological properties of the material.
Impairment of the mechanical and technological properties in the weld area is often associated with these structural changes.

To achieve the atomic-level surface，slicing depth of the abrasive into the surface of the workpiece must be reduced under plastic removal mode, which requires submicron and even nanometer abrasives and magnetic particles to be utilized in Magnetorheological finishing (MRF), so that Magnetorheological effect weakens with reduction of particles diameter, which results in polishing efficiency decreasing[13,14] To meet the hard and brittle material such as SiC wafers atomic scale ultra-smooth surface planarization efficient processing requirements, a new method known as the cluster MR-chemical mechanical polishing (MRCMP) has been proposed that combines superior properties of low damage and small surface roughness of chemical mechanical polishing (CMP) and flexibility ,controllability of cluster magneto-rheological finishing (MRF) to obtain stably and high-efficiently the atomic-scale ultra-smooth planarization surface polishing.
Under the same conditions, the change of the rotational velocity of the polishing platen will affect the material removal rate.
Machining gap directly determines the magnetic field intensity and the polishing pressure of the workpiece surface, thus affects the polishing efficiency.
The composition of polishing liquid is an important factor affects the processing effect, since the surface of Si is a layer of Si dangling bonds, which react to form water-soluble salts with the alkali in the polishing solution.
Gutmann, Chemical mechanical planarization of microelectronic materials.

Only increasing structural size and improving material property are not efficient to prolong service life.
The valve box is made of 34CrNi3Mo, whose mechanical property are as follows: tensile strength σb=1050MPa, yield strength σs=850MPa and tangent modulus t=2*1010Pa.
When the time of loading, stabilizing and unloading are longer than 60s, different loading time affects hydraulic self-enhancement results hardly. 4)The optimal self-enhancement pressure is decided by the maximum working stress and Bauschinger Effect Factor.
MECHANICAL RESEARCH&APPLICATIO, 2008, 21(6):21~23
JOURNAL OF MECHANICAL STRENGTH, 2000,22(2):146-148.

To improve the mechanical properties, PCL has been blended or copolymerized with other polymers [8].
Materials Properties Like many other biopolymers, PCL did not have the mechanical properties to be applied in high load bearing applications which currently limit their use.
The addition of carbon nanotubes to PCL can enhance gas barrier properties of PCL as well as other properties such as the conductivity, thermal, mechanical [23].
Moreover, several nanostructures can be useful to provide active and/or smart properties to food packaging systems, as exemplified by antimicrobial properties, oxygen scavenging ability, enzyme immobilization, or indication of the degree of exposure to some detrimental factors such as inadequate temperatures or oxygen levels.
Gun’ko, “Small but strong: A review of the mechanical properties of carbon nanotube–polymer composites,” Carbon N.