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Therefore it’s imperative to improve their mechanical properties with different toughening and strengthening mechanisms [6, 7].
In this paper, mechanical properties and microstructure of Si3N4/TiC cutting tool materials were studied.
The mechanical properties were measured on prismatic bars with a nominal rectangular section of 4.0 mm× 3.0 mm× 40 mm.
According to Ref. [16, 17], Si3N4/TiC ceramic material may be oxidized to produce SiO2 and TiO2 under high temperature, meanwhile, the SiO2/TiO2 grains were molten for many factors.
Zhao: Mechanical properties and microstructure of Si3N4-TiC nanocomposites.

A Way to Reduce Machine Cutting Temperature Ziqin Ma1, a, Yanan Chen1,b, Pengfei Zhao1,b, Tong Wang1,b, Chen Peng1,b, Li Sun1,a, Qiang Cheng1,2,c, Jiang Wei2,c 1School of Mechanical Engineering, Dalian Jiaotong University, Dalian, CHINA 2Dalian Locomotive and Rolling Stock Co., Ltd, CNR GROUP, Dalian, CHINA amaziqin@djtu.edu.cn, b1032416818@qq.com, c442698561@qq.com Keywords: Cutting speed, Cutting temperature, Cutting heat, Cooling Abstract.
Table 1 Heat Physical Properties of 45 Steel Table 2 Computed Results Thermal conductivity Density 49.8 7850 Thermal diffusivity heat Specific 486 Cutting speed(m/min) 300 400 500 600 700 800 Cutting temperature(˚C ) Dry cutting 643 762 718 781 843 935 Cutting temperature(˚C ) Wet cutting 623 745 697 769 820 914 Cutting fluid temperature (˚C ) 32 32.5 33 34 35 37 Fig.1Cutting Speed and Cutting Temperature Theory of Dr.
There are many factors which can affect the temperature.
Fundamentals of Mechanical Manufacturing Technology [M].Beijing: China Machine Press, 2005.38~39.
Mechanical Design and Theory Professional, Dalian University of Technology, 2013.

Effects of nanostructures on physical and mechanical properties and radiation performance with neutron and light ions such as 3MeV He4+ and 1keV H3+ are presented.
Thermal properties Thermal properties such as the coefficients of thermal expansion (CTEs) and thermal conductivity are very important.
Mechanical properties Mo and W exhibit ductile-to-brittle transition behavior which is typical of group VI transition metals.
The microstructural and processing factors that are influential to the Mo alloys will be addressed.
The high temperature mechanical properties (elongation, flow stress, m-value) that are essential to plastic working can be optimized by TiC addition and MA atmosphere. 3.

The basic physical property indexes of the soil samples are shown in Table 1.
Tab.1 Physical properties of dredger fill Water Content ω (%) Wet Density ρ (g/m3) Void Ratio (e) Liquid Limit ωL (%) Plastic Limit ωP (%) Liquidity Index IL Plasticity Index IP 95.7 1.48 2.67 51.2 27.6 23.6 2.15 Test Results Analysis Consolidation Deformation.
The microstructure of the soft dredger fill is highly porous, which is a key influential factor of its deformation and directly determines the permeation and consolidation characteristics [6].
The drainage distance greatly affects the pore water discharging speed.
This is how the size affects the sample deformation.

Magnesium alloys have been received an attention for structural applications due to their low density compared to other alloys, and intensive studies have been focused for enhancing mechanical strength and surface protection as well.
At the same time, the surface properties of the magnesium alloys have shown one critical barrier for a practical application of the alloy, leading that a fair number of studies for the surface protection has been focused via many coating routines [1, 2].
The surface morphology of the wear test specimen indicates that the coating layer affected the wear properties of the AZ magnesium alloys.
It appears that the pack cementation coatings can improve the surface properties of the magnesium alloys.
It appears that the critical factor for the successful pack cementation coating process is attributed to the coating powder species and annealing temperature.

Research of stress transfer area and its length prediction of single-lap adhesive joint WeiPing OuYang, JianPing Lin, ZhiGuo Lu School of Mechanical Engineering, Tongji University, Shanghai 200092, China School of Mechanical Engineering, Tongji University, Shanghai 200092, China School of Mechanical Engineering, Tongji University, Shanghai 200092, China a ouyangweipingvi@163.com, b jplin58@tongji.edu.cn, c lulong83820@163.com Keyword: single-lap adhesive joint; stress transfer area; strain field; DIC Abstract: obtaining the law of stress and strain distribution of loaded adhesive joint has significant implication for joint design and its strength prediction.
These phenomena affect the mechanic property of the joint significantly [4].
The affect of the moments is determined by the distance to the lapped area.
Thus, the areas on adherend not affected by the moments could be considered to bear tensile force only.
Stress concentration factors for bonded lap joints.

In processing of structure ceramics materials with diamond grinding wheel, grinding heat is one of vital factors influencing workpiece surface quality.
It was proved that grinding depth is the most vital factor influencing grinding temperature field through orthogonal experiments.
Introduction Owing to many merits, such as high intensity, high hardness, low density, low expansion coefficient and so on, structure ceramics have become a kind of key engineering material widely used in aerospace, petrochemical engineering, instrumentation, mechanical manufacture and nuclear industry.
Grinding temperature speed descends slowly just because ceramic material with poor thermal conductivity property can preserve heat, as is far differences from metal material.
Because the increase of grinding depth will consume more mechanical work, which will result in more heat energy produced, therefore the grinding temperature is affected deeply by grinding depth. 2) Regardless of common grinding or ultrasonic grinding, the grinding temperature increases with the wheel speed.

It determines the formation of the bulk microstructure, which is directly related to the mechanical and chemical properties.
In the VCC process, various casting parameters, such as casting speed, which affect the temperature gradient and growth rate, are manipulated to control the microstructure formation during solidification.
The thermal and physical properties used in the present calculations are listed in Tables 2 and 3.
The zinc content thus affects the grain size.
Using the CA method to simulate the solidification microstructure in the VCC process reproduces the evolution of grain growth, with results similar to those of actual casting obtained. 2 The casting speed is one of the main factors that affect the evolution of the solidification microstructure of brass rods.

It is assumed that the initiated cracks will grow at a constant rate (initiation rate, ν1) until conditions are appropriate for the treatment of cracks propagation with fracture mechanics. ν1 statistical properties are determined using expressions given in M-PRAISE, through correlations expressed as a function of the damage parameter D.
- If the stress intensity factor for a crack is negative, the crack will not grow.
The necessary material properties for the initiation and growth of cracks under SCC in AISI 316 NG steel are preselected in this case and introduced in the code.
The maximal time step for the growth of cracks under stress corrosion cracking is limited to 0.1 year, which means that during a long period of operation at steady state, the crack size, the stress intensity factors, and other computations are updated every 0.1 year.
International Review of Mechanical Engineering (I.RE.M.E.), 3(5) (2009) 640-645

For example, in order to improve insulation properties while we select materials, we can’t help increasing viscosity that could make injection molding more difficult. 2) If molding body is not homogeneously filled when injecting/molding, there are defects such as dead spaces or cracks inside it[1][2].
Such composite material is widely used in the insulation industry because of its high/low temperature impact resistance, anti-vibration, weather resistance, dielectric properties, flame retardancy, low water absorption, and so on.
Epoxy resin matrix has a good comprehensive mechanical property, high adhesion, low shrinkage rate, good stability and excellent electrical insulation property.
Resin mixed with bubbles not only affects the appearance of products and more importantly affects electrical performance and mechanical property of products.
Summary Molding materials and molding process directly affect the quality of insulation space-components.