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Valence electron structures analysis on relationship of Cu physical or mechanical properties and vacancy Yun Fei Wang 1, a, Yun Kai Li 1,b and Ming Xia 2,c 1School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, China 2China Automobile Industry Enginnering Corportion, Luoyang, 471003, China awa1yun2fei3@163.com, bliyunkai@bit.edu.cn，c14652569@qq.com Keywords: mechanical properties; EET; valence electron structures; signal vacancy Abstract.
For the purpose of studying vacancy effect on physics and mechanics property, authors advance a method of calculating mono-vacancy cell valence construction, and get 5 phase construction factors nA, , , F and α on electron layer.
However, affect about defects on the relationship between physical and mechanical properties and valence electron structure has not been reported.
Contrasting valence electron structure of no vacancy Cu crystal cell and single vacancy Cu crystal cell, analyzing relationship of resistance and electron density , relationship of strength and the strongest bond covalent electronic pairs number , relationship of stability and configuration number as well as assembly key ability F, and relationship of plasticity and homogeneous deformation factor α, try to use EET to explain influence of vacancy defects on the material physical properties and mechanical properties.
The current reduction, manifest as resistance increased on the physical properties.

With the online adjustment of scaling factors of quantization factors and proportion factor of fuzzy controller, quantization factors and proportion factor are changed indirectly.
With the designed Adaptive-Fuzzy-Smith Algorithm, the effect of mechanical property, time-delay, is well compensated.
Time-delay and nonlinear are main factors affecting the stability of boiler combustion process.
The effect of mechanical property, time-delay, is improved.
Mechanical Properties and Mathematical Model of Boiler Combustion Temperature System Boiler combustion system mainly includes the transmission process of fuel, fuel combustion process and formation of steam.

Research on Transverse Prestress Mechanical Properties Experiment of PC Box Girder Yi Zheng, Jianzhang Chen, Kechao Zhang Research Institute of Highway, MOT, Beiing, 100088, China Key Laboratory of Bridge Detection & Reinforcement Technology, Beiing, 100088, China National Engineering Laborary for Bridge Structure Safety Technology, Beijing 10088, China y.zheng@rioh.cn Key words: PC box girder, transverse prestress, steel wire, experiment, mechanical properties Abstract.
In view of the PC box girder transverse prestress tendon, the factors and the development of tension prestress performance affecting factors were analyzed.
Steel wire itself properties including yield strength, ultimate strength, relaxation properties, anchor performance mainly reflects the anchorage performance of steel wire under load [2]。
Through special processing, steel wire material including cold treatment, heat treatment can achieve higher mechanical properties [3].
Mechanical properties of steel wire with the tension time test and analysis. 2 hours after loading the relaxation steel wire, will gradually ease.

The Factors Affecting Colloidal Processing of 8YSCZ Ceramics Süleyman Tekeli1 and Metin Gürü 2 1 Materials Division, Metallurgy Education Department, Faculty of Technical Education Faculty, Gazi University, 06500, Besevler-Ankara/TURKEY 2 Chemical Engineering Department, Engineering and Architectural Faculty, Gazi University, 06570, Maltepe-Ankara/TURKEY Keywords: Colloidal processing, Zirconia Ceramics, Agglomeration, Sintering Abstract.
To achieve improvements in the mechanical properties, fine grain size, homogeneous microstructure and high density are desirable.
The poor dispersion of the powders produce difficulties in the densification and the presence of agglomerates is responsible for poor mechanical properties.
Particle size and particle size distribution are also relevant factors that determine the reological properties of the suspensions and the packing ability of the powders.
There are many factors affecting the casting characteristic of the slurry system and relative densities, namely solid content, slurry viscosity, dispersing agent concentration and milling time.

Performance of post and core depends on a number of factors, and post-core materials are the most significant ones.
To design highly durable post has to take into account many factors.
Figure 3 Loading of the restorative system Sensitivity analyses In Fig. 6, sensitivity of the post material properties affecting the maximum EQV stress in the root and maximum deformation of the restorative system is presented.
(a) for =0.85 (b) for =0.8 (c) for =0.26 Figure 4 Response surface of the maximum EQV stress in root (a) for =0.85 (b) for =0.8 (c) for =0.26 Figure 5 Response surface of the maximum displacement of the restorative system Figure 6 Sensitivity of the post material properties affecting the mechanical response of the restorative system Conclusions In this paper, a 3-D finite element model was established for the restorative system with one-piece glass fiber post-and-core to investigate the effects of the post material properties on the mechanical response of the system.
Factors determining post selection-A literature review.

Major microstructural factors controlling properties of magnesium alloys after semisolid processing are discussed.
While some factors cause an improvement in product properties, others have clearly negative contributiuon.
As seen in Fig. 2, in addition to the primary solid and transformed liquid, an interface between them is an additional factor affecting properties.
Elements of thixotropic microstructure affecting mechanical properties (a) and complex nature of transformed liquid portion with different phase morphologies, residual shrinkage and porosity, AZ91 alloy (b) It is generally accepted that the globule origin is traced to the alloy grain in the solid state [8].
Evolution of grain size and solid fraction during heating of the Mg-8%Al-2%Zn alloy deformed by extrusion [8] Role of alloy chemistry and post processing treatments For a given chemical composition of a magnesium alloy, the technique of component manufacture affects the microstructural factors, which control properties.

Microstructure and Mechanical Properties of the Wide-gap Region Brazed with Various Powder Mixing Ratios of Additive to Filler Metal Powders Y.
It was found that the (Cr, W)2B and pores in the brazed region are important microstructural factors affecting the mechanical properties of the wide-gap brazed region.
Although many researchers [6-8] have reported on the microstructural characterization and mechanical properties of the wide-gap brazed regions, little is known about the relations between the microstructures and final mechanical properties in the wide-gap region brazed with Ni-based superalloy additive powder and filler metal powder because of its complex chemical composition.
In order to evaluate the mechanical properties of the wide-gap brazed region, tensile tests were carried out at room temperature and 900ºC.
It is believed that the (Cr, W)2B and pores in the brazed region were important microstructural factors affecting the mechanical properties of the wide-gap brazed region.

As well as the filament gets a good curl shape, elasticity and other mechanical properties [5, 6].
Evaluation of Mechanical Properties The mechanical properties was evaluated by Insrton 5566.The clampe gauge was 100mm; the stretching speed was 100mm/min; pre-stress was 0.066cN/dtex.
The following parameters were obtained by the analysis of the curves to evaluate the mechanical properties of the elastic fibers.
Effect of Treatment Temperature on the Mechanical Properties of PET/PTT Filament.
The key factor affecting the crimp property of PET/PTT filament was temperature.

MECHANICAL PROPERTIES ACCORDING TO HEAT TREATMENT FOR GAS TURBINE BLADE MATERIAL Moon Young Kim 1,a, Sung Ho Yang 1,b and Kuk Hyun Song1,c 1 Department of Gas Turbine Technology Service Center, KPS, 247, Kyungseo-dong, Seo-gu, Incheon 404-718, South Korea a mykim@kps.co.kr, bshyang@kps.co.kr, cskhyun7@nate.com Keywords: GTD111DS (directional solidification), Gas turbine blade, γ´, HIP (hot isostatic pressing), Mechanical properties.
In the latter steps, we observed changes of γ´ phase affected in material properties, and microhardness test was carried out to evaluate mechanical properties according to changes of γ´ fraction and shape.
And also mechanical properties changes such as micro-hardness related to γ´ phase.
Therefore, this work was tried to help to understand basically the mechanism on HIP treatment by microstructure and mechanical properties evolution. 2.
And also it was selected average micro-hardness by Rockwell tester recording data 5 times each to evaluate mechanical properties. 3.

Its utilization in harsh environmental conditions requires an understanding of weathering effects on its mechanical properties.
Many factors affecting polymers’ degradation have been identified to depend on weathering [1-14].
Tensile properties give an appropriate key indicator for the mechanical deterioration of the material.
It can be concluded that the factors affecting the above mentioned materials are also seen to affect CPVC pipe material.
It was observed that among tensile properties, the tensile strain at break is the most affected property by weathering.