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Introduction Today, the mechanical properties of products made of wrought magnesium alloys still offer the best preconditions for ultralight components with high level of requirements including specific strength and stiffness.
These enhanced mechanical properties have been opened new applicable areas of magnesium alloys, and have initiated the main driving force in the automobile industry to achieve optimum in lightweight construction and functionality by innovative concepts [1].
Orlov et al. [7] reported betterment in the mechanical property of ZK60 alloy by integration of extrusion and equal-channel angular pressing (ECAP) processes.
Ostrom [8] compared the mechanical behaviors of AM60 alloys, high pressure die-casted by two different manufacturers, and the authors mentioned that the mechanical properties was affected by the different die casting conditions depending on the manufacturers.
Therefore, it is deduced that the average grain size is the more important factor affecting the workability rather than the shape of grains, such as the fraction of elongated or equiaxed grains.

In this approach, experiments with the factors that are considered to be the most important are conducted to investigate the effect of each factor as well as the influencing mechanism on the surface roughness generation.
Taguchi method provides a considerable reduction of time and resources to determine the key factors that affect operations, achieving simultaneous improvement of quality and cost of manufacturing [51].
This work was focused on identify the main factors that influence a dry turning operation, and select the optimal manufacturing conditions that result in minimum surface roughness.
Most of them can be summarized in four main categories: machining parameters, cutting tool properties, workpiece properties and cutting phenomena (Fig.1).
The main utility and novelty of this work is that provides a guide, in form of tables and list of reference, for relating machining parameters, cutting tool properties, workpiece properties and cutting phenomena with the different techniques and optimization tools usually employed in predicting the surface roughness.

However their usage is limited due to its thermo oxidative and cold flow properties.
It is widely know that temperature is significantly affect lubricant degradation.
In developing new lubricants, finding suitable and compatible additives to enhance base oil properties is another difficult task to be accomplished.
Erhan, Oxidation, friction reducing, and low temperature properties of epoxy fatty acid methyl ester.
Nair, Coconut oil as base oil for industrial lubricants—evaluation and modification of thermal, oxidative and low temperature properties.

Comparative investigation of optical properties in Tm3+/Er3+/Yb3+ co-doped oxyfluoride tellurite and germanate glasses Yuebo Hu1,a, Jianbei Qiu2,b, Dali Zhou3,c, Dacheng Zhou2,d, Rongfei Wang2,e, Qing Jiao2,f, Zhiguo Song2,g, Zhengwen Yang2,h 1 Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, China 2 Faculty of Material Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China 3 College of Materials Science and Engineering, Sichuan University, Chengdu 610064, China ahuyb@kmust.edu.cn, bqiu@kmust.edu.cn, czdl@scu.edu.cn, dzhoudacheng123@163.com, ewang-rong-fei@163.com, fjqyxt@yahoo.com.cn, gsongzg@kmust.edu.cn, hyangzw@kmust.edu.cn, Keywords: Up-conversion luminescence; Tm3+/Er3+/Yb3+ co-doped; Oxyfluoride Glass; Optical properties; Phonon density Abstract.
However, it is difficult to fabricate fluoride glass fibers owing to their low chemical and mechanical stabilities.
In this paper, we comparatively investigated the optical properties of Tm3+/Er3+/Yb3+ co-doped oxyfluoride tellurite and germanate glasses under 980 nm excitation at room temperature.
Therefore, we believe that there must be other important factors that affect the UC efficiency.
In this present work, the dependence of emission properties of TYET and GYET glasses on different excitation power was also investigated, and the results are depicted in log-log plots of as shown in Fig.4.

These factors determine that hydraulic concrete structures are more easily aging than ordinary concrete structures.
As far as the hydraulic concrete structure is concerned, the essence of dam material aging is a coupling interaction of various factors in the operation process, this interaction leads to the decrease of mechanical properties and durability of concrete, the hydraulic concrete aging macroscopically are mainly manifested as concrete cracking, leakage, peeling, dissolution and so on.
Compared with the results ofⅠ{TTP}8544 # and II# specimen, the carbonation can result in the decrease of the porosity of dam concrete, but the critical pore size and average pore diameter will increase, the pore connectivity is enhanced, so the impermeability and frost resistance of the dam concrete is decreased.For the concrete under water, although the carbonation is not obvious, but it does not mean that the concrete in this region is not aging, the increase of the porosity and the pore size in the concrete indicates that the durability and mechanical properties of the concrete under water will be reduced.
For the internal concrete in this dam, the porosity, average pore size and critical pore diameter of the internal zones are all decreased, which indicates that the hydration reaction of the concrete in the dam interior is continuous, and the mechanical properties and durability of the concrete are improved.
Research of Influencing Factor between Concrete Durability and Pore Structure, Harbin, 2006.

However, taking into consideration other factors, we can set the demolding temperature above 50 oC.
Orientation 4.2 Orientation The orientation will cause different mechanical properties of plastic products which along all directions, sometimes some directional mechanical properties is rather poor.
Mechanical Industry Press, 2001, 231-363
Mechanical Industry Press, 2000, 252-512
Mechanical Industry Press, 1998, 110-508

Introduction Reinforced concrete is the main storage material for natural gas due to its excellent durability and mechanical properties, but the performance research and optimization of storage equipment still face difficulties, and it has certain practical significance for the research on the reliability of its deflection control under ultra-low temperature.
Domestic scholars have made the following research on the deflection control of reinforced concrete: For the flexural members, the main factors affecting the reliability of the member’s deflection control in descending order are the relative values ​​of variable action effects ρQk, the relative cross-sectional area of compression flange γ`f and the reinforcement ratio of longitudinal tensile steel bars ρ[1]; the performance of reinforced concrete beams shows that as the temperature decreases, the brittleness of the reinforced concrete beams increases, and the stiffness has certain fluctuations[2].
The reliability indexes of the bending beam under various temperature gradients under various variable factors are shown in Table2, compare the changes of various factors under various temperature gradients of ultra-low temperature, and obtain the influence of various factors on the reliability index under various temperature gradients.
(2) Compare the changes of various factors under various temperature gradients, and calculate the difference of the extreme value of the reliability index β.
Experimental study on the mechanical properties of concrete under low-temperature-normal temperature cycles.

In severe cases, it will also cause natural environmental pollution, affecting people's happiness and property safety [10].
Zhou et al. [21] applied ABAQUS nonlinear FEM for investigating how corrosion factors (defect depth, length, and spacing) affected defective X80 pipelines in terms of the failure pressure and maximum equivalent stress, confirming defect depth the most significant influencing factor.
X60 pipeline steel is widely used in oil and gas transportation, marine, high-pressure, high-temperature, and corrosive environments due to its excellent mechanical properties, corrosion resistance, and processability, and has high utilization result.
Analysis of the Effect of Different Geometric Factors on Failure Pressure 4.1.1.
For the convenience of mathematical processing, before fitting the formula, the factors affecting defects are first dimensionless.

In the present study, the effect of compositions on the mechanical properties of zirconia-alumina multiphase ceramics was studied.
Introduction ZrO2-Al2O3 multiphase ceramics have attracted much attention because their mechanical properties are more excellent than the single-phase ceramics, and many researches have been done on them.
Results and Discussion Fig.1 shows the mechanical properties of zirconia-alumina multiphase ceramics with the change of composition.
In Transition zone, the mechanical properties of (Y,Ce)-ZrO2/Al2O3 multiphase ceramics were complex.
It was found that stress-induced transformation toughening of ZrO2 and dispersion strengthening of Al2O3 were the two main factors that affected the mechanical properties of ZrO2-Al2O3 multiphase ceramics, which were also relative to the microstructure of the multiphase ceramics.

However, Ti50Ni10Cu40 alloy strip was so brittle that its mechanical properties could not be measured.
The mechanical properties such as elongation and stress hysteresis were also determined in as-cast strips of Ti50Ni15Cu35.
However, the mechanical properties of Ti50Ni10Cu40 strips could not be analyzed in this study because of their brittleness resulting from the excessive Cu-contents.
Even though the most important factor affecting on the shape memory characteristics of Ti-Ni-Cu alloy is Cu-content, it was reported that the large transformation strains (compared to those of ingot materials) were obtained due to the texture of the heat-treated ribbons [10] and the small hysteresis was also obtained due to small grain size of the melt-spun ribbons [11].
Summary Microstructures, transformation behaviors and mechanical properties of Ti50Ni15Cu35 and Ti50Ni10Cu40 alloy strips fabricated by the arc melt overflow process have been investigated.