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It had affected to nugget size, heat affected zone and mechanical properties decreasing.
If using much or less pressure, it would have affected the mechanical property which reduced the strength of work pieces.
Use the experimental design is a one-way ANOVA [3] to be the factors effectors affecting significantly.
The factors used in the study are as follows.
It had affected to nugget size, heat affected zone and mechanical properties decreasing.

It was reported that Ce-Y-TZP ceramics have excellent comprehensive mechanical properties [4-6].
In the present study, effects of CeO2 on the mechanical properties and microstructure of Y-TZP nanocomposite ceramic die material were studied, and ceramic die material with excellent comprehensive mechanical properties was achieved.
Fig.1 shows the variation of the mechanical properties of 3Y-TZP nanocomposite with different CeO2 content.
The variation of mechanical properties of 3Y-TZP nanocomposite can be attributed to the differences in material microstructure.
It suggests that the suitable addition of rare earth elements is one of the critical factors affecting the mechanical property of the nanocomposite ceramic die material.

The microstructures and mechanical properties of the Mg-Zn-Er alloys have been investigated.
It is important to improve the mechanical properties of magnesium alloys.
Tensile stress - strain curves of these alloy All about results indicates that the most important factors affecting the mechanical properties are classified two sides, i.e. refinement of the microstructure and precipitation of the secondary phase.
The formation of the secondary phase is one of the most important factors to influence the mechanical properties of the magnesium alloys.
(2) The existence of the I-phase leads to improvement of the mechanical properties.

The effect of tool rotational speed and welding speed, on microstructure and mechanical properties were analysed in detail and presented.
Liu et al. [4] have friction stir welded AC4 cast aluminum alloys and presented the microstructure and mechanical properties of the joints .They reported that the joint exhibits better mechanical properties than base materials.
Fig. 4 SEM picture of the fractured surface of sample 3 Mechanical properties.
Finer grain size and proper material mixing can be observed in the SZ, which favours higher mechanical properties. 2.
Nogi, Microstructure and mechanical properties of friction stir welded joints of AC4A cast aluminium alloy, Mater.

The dimensions of granular martensite and austenite (M-A) constituents are main factors influencing the impact toughness.
Its mechanical properties are given in Table 1.The specimens (11×11×90mm) oriented in transversal direction with respect to rolling direction were taken from the 20mm thick plates. 2.2 Methods The thermal cycle experiments simulating the behavior of CGHAZ during welding were performed on a dynamic thermal machine, Gleeble 2000 of which the principle is based on resistance heating.
Table 1 Mechanical properties of copper-bearing steel AKV/J thickness/mm direction ReL/MPa Rm/MPa A/% -20°C -40°C longitudinal 667 760 20 69 54 20 transverse 715 778 13.5 59 46 3.
The dimensions of granular M-A constituents are main factors influencing the impact toughness.
(2) The dimensions of granular M-A constituents are main factors influencing the impact toughness.

The Mechanical Properties of Lightweight Concrete under Different Factors Xi Liu, Beibei Lv, Tao Wu School of Civil Engineering, Chang’an University, Xi’an, Shaanxi, China lvbeibeial_si@163.com Keywords: lightweight aggregate concrete, ceramsite, water-binder ratio, fly-ash content; compressive strength Abstract.
By choosing domestic ceramsite as lightweight aggregate, mixing with active mineral admixture (fly ash) and the water reducing agent, and adopting the method of absolute volume to design the three ceramsite concrete mixture ratio, 27 groups, 243 lightweight aggregate ceramsite concrete test cubes of 100mm×100mm×100mm are obtained for compressive strength test, and the physical and mechanical properties of the aggregate are studied.
The shapes and surface of ceramite are shown in Figure1, and the physical and mechanical properties are shown in TABLE 1.
Various physical and mechanical properties of lightweight aggregate Types Cylinder compressive strength (MPa) Bulk density (kg/m3) Apparent density (kg/m3) 1h water absorption (%) 24h water absorption (%) Particle size (mm) clay ceramsite (N) 5.6 663.6 1174.3 5.6 9.8 5~16 fly ash ceramsite (F) 9.6 936.0 1400.0 16.4 20.1 5~16 shale ceramsite (Y) 10.5 824.2 1510.4 3.0 8.2 5~16 Design of Mix Proportion.
Compressive strength for same ceramsite different water-binder ratio Failure Mode of High-Strength Lightweight Aggregate Concrete The mechanical properties of concrete are decided by the performance of aggregate, properties of hardened cement paste and the bond behavior of hardened cement.

Hardness and tensile properties of the specimens were measured.
Leading wire current, trailing wire voltage and welding speed are the major factors affecting weld bead profile and microstructures in weld metal and fusion zone.
Table 4 Tensile properties of weld bead No.
Conclusions The influence of welding process parameters on the weld bead dimensions and mechanical properties was investigated in the present work.
(3) Reduced heat input enhances the formation of strengthening phases in weld microstructure and yields good mechanical properties.

Investigation’s aim was to detect the influence of the post consumer PET (20-100 %.) quantity on films mechanical properties. 2.
Mechanical properties After the tension tests, the tensile strength results are obtained.
Thermal, mechanical and permeation properties of gamma-irradiated multilayer food packaging films containing a buried layer of recycled low-density polyethylene.
Thermal, mechanical and permeation properties of gamma-irradiated multilayer food packaging films containing a buried layer of recycled low-density polyethylene.
Factors affecting degradation of polyethylene terephthalate (PET) during pre-flotation conditioning.

The research on rebar corrosion and its effect on the mechanical properties of rebar are increasing [7-10].
The cylindrical samples (Φ14mm×450mm) are used for corrosion rate measuring and mechanical properties tests.
The tensile mechanical properties, including yield strength, tensile strength and elongation, are tested by a hydraulic pressure universal testing machine.
These will affect the strength properties of reinforcing bar.
Maybe the effect of stress concentration on each strength property is not familiar, or there can be other affecting factors.

That also reveals the changeable characteristics and affected factors of the damping rubber of the high elastic fastenings in large distortion condition.
Therefore, the frequency and amplitude are the main factors which affect the dynamic stiffness of rubber components.
Conclusion Amplitude and frequency are the critical factors affecting on the dynamic characteristics of rubber absorber in rail fastening.
This present results will contribute to evaluate dynamic properties and optimization design of rail fastening.
Mechanical vibrations.