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The tool failure by wear has become one of the critical factors seriously deteriorating the production efficiency: it not only affects the machining accuracy and surface quality of parts but also may cause the cutting tremor, which damages tools and workpieces and directly affects the smooth operation of cutting[1][2].
PCrNi3MoVA steel has excellent mechanical properties after modification and is critical material in the ordnance industry.
Its chemical composition and physical and mechanical properties are listed in Tables 1 and 2.
Ø The mechanical and physical properties of PCrNi3MoVA gun steel (namely, high hardness and strength) determine that severe tool wear occurs during cutting.
Microstructures and mechanical properties of high strength gun steels[J].Ordnance Material Science and Engineering, 2003, 26(2), pp7~11

Keywords: Asbestos-free friction material, tribological properties, mechanical properties, Compression Moulding Process.
Mullite content affects the binding of friction modifier, it is contributed to the different properties of friction material
An aspect ratio of Cu fibers can be an important factor affecting the physical and thermal properties of the composite brake pad material.
The selection of binder depends upon the factors such as cost, application, material, manufacturing process etc.
But they did not possess the equitable mechanical properties.

The atomic level process of the nanostructure formation and the thermo-mechanical effect caused by the factors of the contact area, the adhesion force, and the temperature were clearly shown and discussed.
The relations among the factors of contact area, temperature, and adhesion force w.r.t the material behavior are discussed.
Thus no discernable variations on the system properties were observed beyond natural fluctuations.
In the nanoscale, the temperature effect is increasingly important because the kinetic energy of the atoms is directly affected.
The contact area became a minor factor.

Abstract: The microstructure and mechanical properties of permanent mold low-pressure casting (PMLPC)and sand mold gravity casting(SMGC) of A357 alloy were studied.
These differences may be attributed to various factors,such as filling speed, filling pressure, and cooling rate,thataffectthe qualityofpermanent molds during the filling process.
Wang et al.[11] studied the filling process, microstructure, and mechanical properties of A357 alloyproduced by low-pressure green sand casting.
However, comparingGroup Nos.2–6 with Group Nos.7–10, the SDAS appeared to have little or no effect on the mechanical properties of the alloys obtained.
Conclusion Alloys cast by PMLPC and SMGC were studied in terms of their microstructure and mechanical properties.

Introduction The durability of metallic structures depends on the presence of heterogeneity in the phase and chemical compositions of materials, the crystal cell orientation, the density of flaws, the structure of borders between phases, the presence of internal stresses and microplastic deformation zones and other factors.
On the other hand, in ferromagnetic materials, these factors exert a great influence on the formation of magnetic domains, thus affecting magnetic properties of materials [1].
This allows to apply magnetic parameters and properties for testing structures and designing memory deformation or strength gauges [2-7].
At heat treatment, the transformation of the structural phase composition changes magnetic and mechanical properties.
This arises from the redistribution, appearance or disappearance of phase components, which differ in their magnetic properties.

And its main composition and mechanical properties [2] is shown in table 1 and table 2.
Table 1 The mechanical properties of 7050-T7451 aluminum alloy σb (MPa) σys (MPa) ε (%) E(GPa) Longitudinalhorizontaltrt(L—T) 483 414 4.0 26.0 Transversal (T—L) 483 414 8.0 24.0 The test theoretical basis.
So if the cutter, cooling method and the materials are specified, the main factors which could affect the milling force would be the milling speed, feed rate, milling depth and milling width.
There are four factors to affect the milling performance, so the orthogonal experiment method is used in the high-speed milling 7050-T7451 aluminum alloy experiment.
The four milling factors are as the experiment factors.

In this mathematical model, the viscosity of the engine oil is manipulated by the factors of temperatue and time.
Both of this factors relies fully on laboratory data.
In the UKM model (ηUKM), the viscosity of engine oil is manipulated by two factors : temperature (ks) and time (km).
Both these factors are dependent on the composition of added substance of the oil.
Parc: Rheological Properties of Lubricants, Imprimerie Barneoud, France 1989

This suggests that they might have a significant influence on the mechanical properties of ductile iron components.
This suggests that these stresses might have a significant influence on the mechanical properties of the material.
No temperature dependence is taken into account, as this quantity seems to affect the elastic properties of graphite only to a limited extent within the temperature range considered [16].
Tiedje, Solidification, processing and properties of ductile cast iron, Mater.
Liu, Mechanical properties of wrinkled graphene generated by topological defects, Carbon N.

Influence of the Surface Topography on the Micromechanical Properties and Performance of a CMP Finished AlN Component for Silicon Plasma Etching L.
The degrees of surface smoothness and flatness are important factors because they influence the thermal uniformity and chucking capability of AlN ESC.
Micromechanical Properties of Y and AlN/Y Interface A post SEM close up image showed that the indents No. 9, 12 and 13 are located within the surface of yttrium, on the AlN/Y interface, and within an AlN particle, respectively.
In the second and main part of this experimental study, tribological properties of AlN ESC, we have shown by independent observations of selected localized nanoindentations on the AlN ESC that the CMP induced SD gravely affected the micromechanical properties of the substrate, particularly the AlN/Y boundary strength.
Richerdson, Modern Ceramic Engineering: Properties, Processing, and Use in Design, 2nd ed.; Marcel Dekker, New York (1992) p. 374. 3.

The effects of different contents of SiO2 on the mechanical property were sdudied in this paper.
In this experiment, SiO2 powders are hoped to toughen epoxy resin, thus improve the mechanical property of the composites.
The effect of concertration of SiO2 on the mechanical property was also investigated.
We consider that the significant effect of SiO2 on improving strength due to two factors, the first is the high elastic modulus of SiO2 powders, and the second is the powerful acting force and cross-linking between SiO2 powders and exopy resin.
Distribution even of SiO2 is the main cause that leads to greater improve the mechanical property of the composites.