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The influence on the mechanical properties and synusia cluster refinement about β phase is analyzed.
This material may have better mechanical properties at high temperature, at the same time, the room temperature tensile ductility is good.
Research shows that, the various factors affecting the mechanical properties of TiAl based alloys, microstructure effect is the most important.
[7] Chen Yuyong, Kong Fantao, Han Jiecai．Influence of yttrium on microstructure Mechanical properties and deformabilily of Ti-43A1-9V alloy．Intermetallies, Vol. 13 (2005), p263-266
[10] Huang Boyun, Zhou Kechao.The Influence of TiAl Microstructure on the High Temperature Tensile Mechanical Properties at Room Temperature.

Mechanical Properties of Barley Straw/HDPE Composites Produced with Extrusion Process Anton M.
Orientation stretching has a significant effect on the physical and mechanical properties of wood-polymer composites.
These factors create significant technological problems in the production of thin-walled products from composite materials.
Table 1 shows that the developed wood-polymer composite is superior to pure polyethylene in terms of physical and mechanical properties.
Yadaw, Evaluation and testing of mechanical properties of wood plastic composite, J.

Surface roughness has an impact on the mechanical properties such as, fatigue behavior, corrosion resistance, creep life, etc.
Surface roughness is affected by many factors such as; machining parameters, cutting tool properties, work piece properties and cutting phenomena [1].
Kim and Kang [10] investigated the machining of AA2024 alloy with polycrystalline diamond end mill using the criteria of surface roughness, as a result of the experiments conducted at different values of cutting speed, axial and radial depths of the cut, and feed per tooth parameters, it was found that, axial depth of cut is the most significant factor affecting surface roughness while radial depth of cut has a low effect.
Yang and Chen [11] studied the effects of depth of cut, spindle speed, feed rate and tool diameter factors on surface roughness in the milling of AA6061 via Taguchi method, the experiments based on L18 orthogonal array were evaluated with analysis of variance (ANOVA) and S/N ratio analysis and it was seen that all the factors except tool diameter were significant.
Tool flute number is selected as a new factor in this study to express its affect on surface roughness quality with other machining parameters which known as control factors.

The results show that there is considerable difference in the properties obtained and are interpreted and discussed in detail in the paper. 1.
Introduction The ability to recover large strains coupled with excellent functional and mechanical properties of the SMA materials make them the most interesting and technologically important class of smart materials for various applications, such as hydraulic couplings, civil structures, actuators, MEMS, endovascular stents, etc. [1–3].
NiTi-, Cu- and Fe-based alloys are quite popular among SMAs and, among these SMAs, NiTi-based SMAs have captured a niche market for them owing to their attractive mechanical and functional properties together with excellent biocompatibility [4].
This behaviour also depends on factors like alloy composition, thermomechanical treatments, etc.
This is attributed to two factors: 1. larger diameter of the wire sample; and 2. slow rate of heating and cooling of the sample.

Based on studying the biological prototype of crack-resistance of dragonfly wings and finding surface thermal fatigue crack is one of the main factors affecting life of the hot work mould, it is put forward thoughts about the local laser bionic strengthening the grid mould surface.
Introduction Because hot work die touches repeatedly with high-temperature material in service time and happen fatigue by long-term alternating stress role, so mould local surface produces crack and strength is destroyed, which affects the service life of die.
Dragonfly wings is a model of excellent mechanical properties and a perfect union with flexible and rigid.
The one of most factors is that the local stress exceed elastic limit of die steel, because the temperature of rise and fall makes working surface to be produced variable stress of crushing and pulling, when aluminum melting repeatedly impacts into working surface of hot work die, as shown in Fig. 4.
Atkins: Journal of Mechanical Engineering Science.

Research on the Stress Intensity Factor of the Crack Inclined across the Interface of Cermet Cladding Parts Junru Yang1,2 , Zhaoqian Li 3, Chuanzhen Huang3 and Quanwei Wang 1 1 College of Mechanical and Electrical Engineering, SDUST, Qingdao, China, 266510 2 School of Material Science & Engineering, Shandong University, Jinan, China, 250061 3Mechanical Engineering School, Shandong University, Jinan, China, 250061 Keywords: Cermet cladding parts, Crack inclined across the interface, Stress intensity factor Abstract.
Christina Bjerken etal [3] studied a simple method to compute plural stress intensity factor of the bi-material.
The property parameters of the two materials are in table 1.
When h1/h increases, the shear stress between the clad and the substrate increases to cause the increase of the SIF, and as the crack is inclined, the shear stress mainly affects the KIx1 and KIx2.
[7] Edit Committee of Handbook of Property Data of Materials for Mechanical Engineering: Handbook of Property Data of Materials for Mechanical Engineering (Mechanical Industry Publishing House, China 1995) (Chinese)

It appears that numerous uncertainties affecting estimated resistance can be treated by statistical approaches along with the semi-probabilistic verification method.
NDTs and MDTs are inherently associated with measurement uncertainty that affects the estimates of material properties and may lead to underestimation or overestimation of a true structural resistance.
Table 1 Material properties of iron Type Use Material properties Ref.
Further investigations based on more statistical data for material and geometrical properties and load-bearing capacities of columns are needed to refine values of the partial factors for cast iron structures.
Numerous uncertainties affecting resistance should be treated by probabilistic approaches or by semi-probabilistic methods that are suitable for engineering applications.

Particularly, corrosion fatigue strength of coil spring depends on many factors including mechanical and environmental properties.
Its chemical composition and mechanical properties are illustrated in Table 1 and Table 2.
Table 1 Chemical composition of material (wt. %) C Si Mn P S Cr 0.55 1.36 0.7 0.01 0.002 0.68 Table 2 Mechanical properties of specimen Yield strength (MPa) Tensile Strength (MPa) Elongation (%) 1,176 1,764 9.4 9.5 mm9.5 mm9.5 mm9.5 mm 80.5 mm80.5 mm80.5 mm80.5 mm 90 mm90 mm90 mm90 mm X Y X,Y,Z = 0 at 3/4 pitch Diameter of coil Section of wire Total No. of coil : 7 No. of active coil : 5.5 spring constant : 1.98Kgf/mm 261 mm Displacement = D Fig. 1 FEA model of coil spring Analysis Results.
Showing the maximum residual stress by multiple impacts was lower than one by single impact, it is assumed due to the fact that interaction between the shot balls impacting to the surface considerably affected final residual stress generation
In order to affect sufficiently corrosive environment to corrosion fatigue characteristics of coil spring, coating of spring wire was partially removed, and periodically sprayed the solution to coil spring.

China a guohongmin@ncu.edu.cn, byangxj@ncu.edu.cn Keywords: rheocasting, forging, wrought aluminum alloy, microstructure, mechanical properties Abstract.
Subsequent optimized heat treatments raise significantly the mechanical properties.
The as-cast mechanical properties are common, yield strength of 198MPa, ultimate tensile strength of 306MPa and elongation to fracture of 10.4%.
Via heat treatment the mechanical properties of rheoforged 2024 were improved significantly.
Overall, better mechanical properties than thixoforging was obtain by LSPSF rheoforming.

The gradation curve of SMA asphalt mixture directly affect the performance of road.
Comparative analysis of advantages and disadvantages with the properties of the mixture road 9 group grading curve corresponding, can get the recommended gradation curve range.
Because of the different gradation of asphalt mixture formed the different physical and mechanical properties of mixture, a variety of different asphalt mixture has different performance [1, 2].
The coarse aggregate and fine aggregate are two factors of orthogonal experiment respectively.
PhD dissertation, university of changan. 2002 [4] peng yong, li-jun sun;The factors affecting the cleavage strength of asphalt mixture.