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Introduction Energy and environmental issues have always been hot and difficult in the economic development of the world, but also have become the main restricting factors of sustainable development.
Meanwhile, Mo and W are the important solid solution strengthening elements, which affect the mechanical properties of super alloys.
In this paper, the effects of Nb, Al, Ti, Mo and W elements on equilibrium and mechanical properties of the Ni-Cr-Co type Inconel 740H was analyzed to optimize the chemical composition of Inconel 740H alloy.
Fig. 6 Effect of W element content on the equilibrium precipitate phase Effect of Mo and W Elements and Content on the Mechanical Properties As for Inconel 740H, the effect of Nb, Al and Ti on the equilibrium precipitation of the alloy was analyzed by software calculation.
The tensile properties at room temperature, 600, 650, 700, 750 and 800℃ respectively were tested, and the results are shown in Table 4 and Fig. 7.

Effect of Secondary Carbide Addition on Properties of Ti(C0.7N0.3)-Ni Cermets S.
The effect of WC or NbC addition on various properties of Ti(C0.7N0.3)-Ni cermets was investigated.
Specifically, attention must be focused on the influence of various factors on the rim structure in terms of microstructure and composition.
(a) 5WC (b) 15WC (c) 25WC (d) 5NbC (e) 15NbC (f) 25NbC Mechanical properties: Fig. 2 (a) and (b) shows hardness (HV) and fracture toughness (KIC) values, obtained from Vickers indentation measurement.
This is due to the difference in the mechanical properties of (Ti,Nb)(CN) and (Ti,W)(CN), which are present as major phases in the two systems.

The components of self-lubricating composite coating can be easily designed, could behavior self-lubricating and wear-resistance special properties on the basis of excellent mechanical property of the matrix materials, and greatly save raw materials and production time by the usage of coats lubricate.
Although the generation and properties of solid self-lubricating film have drawn great attention from material sector and tribology sector, and have make much research on it.
This essay discusses the self-lubricating effect and action mechanism of MoS2 film in the Ni60A/MoS2 composite coating by means of researching the tribological properties of the Ni60A /MoS2 composite coating.
When MoS2 in the coating rub with other materials, it could form a layer of solid lubricate film between two surfaces, which affects lubricating and elevating anti-friction properties.
It is because of MoS2 in the friction course to the counterparts, could generate a layer of solid lubricate film, which plays a role in lubrication and improves its wear resistance properties.

Research on the Optimal Design of Soccer Robot based on the Mechanical Analysis Jian wen Han, Hong Lei Qiongzhou College, Sanya 572022, Hainan, china email: Hjwlh@qq.com Keywords: Differential evolution algorithm-DE;K-means cluster algorithm;Cluster analysis Abstract.
But the traditional K-means clustering algorithm in the cluster center initialization [4-5], but randomly assigned initial point, usually only find a local optimal clustering results, it is less stable, thus affecting the classification accuracy.
CR directly affects the size of individual variation on the role of the pilot study individual.
Scaling factor F according to equation (4) the value of dynamic decreasing strategy
Table 1 Data set The number of data samples The number of sample properties The number of categories IRIS data set Glass data set Vowel data set 150 214 990 4 9 10 3 6 11 In the K-means clustering algorithm based on differential evolution experiments, the population size N is set to the number of individuals in the population dimension d 10 times; scaling factor of F = 0.6, crossover probability CR = 0.5, where the interval of the initial population[0, 8], the maximum number of iterations t = 200.

The composites were tested for their flexural properties, impact behaviour, dynamic mechanical properties and fracture surface analysis.
Earlier, a lot of studies were conducted on the mechanical properties of fly ash filled polymer matrix composites [4].
The overall predominance of one factor over another might have controlled the change in properties.
The flexural and Impact properties showed improvement in the mechanical properties of the composites with respect to uncoated FA/RPP composites.
Misra, Static and dynamic mechanical properties of vinylester resin matrix composites filled with fly ash, Macromol.

This is expected since most physical, electronic, chemical, mechanical, and biological systems are affected by temperature.
The low resonance frequency of tuning-fork allows low power consumption of CMOS electronics and miniaturized by the use of photolithography and etching technology are very attractive properties for sensor applications [3, 4].
Two prongs connected at one end make a resonator whose resonance frequency is defined by the properties of the material from which it is made and by its geometry.
The cutting angle of flexural quartz crystal is expressed by new cut ZY(θ/Φ), it is the principal affecting the quartz tuning fork temperature sensor.
From FEM analysis, it is shown that the tine width and the tine tip electrode thickness are major factors affecting the resonance frequency of tuning fork.

Introduction Increasing demands on the integrity of the surface (a surface and a surface layer), the development of new cutting materials, increasing the cutting speed, the development of machine tools, but also environmental trends (for example dry machining or machining with a reduced amount of process liquids) and other factors, including economic pressures (reducing production costs limit price), may also adversely affect the properties of machined surfaces, and thus the machines.
These include negative tensile residual stresses affecting mechanical properties and structure of the surface layer, the formation of defects, fatigue fracture, etc.
The primary plastic deformation is usually (and in particular in grinding conventional abrasive products) extended below the level of the future, and the machined surface with the subsequent deformation of the edge of the material, caused radius blade and with temperature, it causes changes in the mechanical properties of the surface layer such as hardness, strength, toughness, etc..
Most often characterized by changes in the mechanical properties of micro-hardness is the depth of reinforced layers and the degree of consolidation (rate of change of hardness on the surface and the hardness of the base material in %).
The cutting conditions affect the value of reinforcement, especially cutting speed and chip thickness (or feed).

These properties arise from the combination of both the metal complex and the polymers’ characteristics (processability, mechanical strength, thin film formation, etc.).
Their luminescence properties were investigated.
Luminescence Properties.
In order to study the energy transfer process and luminescence mechanism, the effect of some factors such as the contents of Alq3 on luminescence spectrum was studied.
The luminescence properties of the copolymers were investigated by UV-vis and fluorescence spectra.

It was found that the mechanical properties of microhardness values are between 151.70 to 155.80 HV and the tensile strength values are between 472.71 to 491.12 MPa according to transverse and longitudinal sections of the specimens.
Cost reduction and versatility are the main driving factors in both production and product design.
Mechanical properties of the deposited material were quantitatively tested by microhardness inspection, centered around the centerline of the wall.
It will induce the downflow of liquid metal, and the surface quality of the component will be atrocious, affecting the quality of the part.
Feng: Effect of location on microstructure and mechanical properties of additive layer manufactured Inconel 625 using gas tungsten arc welding.

For the use of composite materials as a part of a structure or a machine element, the mechanical properties and fracture toughness are important factors.
The mechanical properties are shown in Table 1.
Physical and mechanical properties of the material Fig. 1 Macroscopic appearance of the material (a) (b) (c) Fig. 2 Geometry of the specimens (b = 3.5 mm, 5.1 mm); 2(W-t) = 20 mm, t =0.5, 1.0, 2.5, 5.0, 7.2 mm, Notch root radius of blunt notch = 8mm Results and Discussion Critical fatigue strength and failure mechanism According to previous research [1,2], fatigue limit or critical stress amplitude sw of each specimen pattern can be approximated by Load Increase Test (LIT) using a single specimen.
Therefore the stress concentration did not affect the fatigue strength of the present specimens.
(2) The void fraction affected the fatigue limit.