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The processing temperature is an important factor to affect the microstructure and mechanical properties of the Mg alloy during ECAE.
Grain refinement was an important practice to improve the mechanical properties of magnesium alloy.
The mechanical properties and microstructure evolution of Mg alloy would be controlled by the ECAE procedure.
And the mechanical properties and microstructure evolution during ECAE and two-step ECAE will be discussed.
Summary The processing temperature is an important factor to affect the microstructure and mechanical properties of the Mg alloy during ECAE.

Thus, there is a need for a simplified method to evaluate piled mechanical properties of microPCMs.
Mechanical Properties Measurements.
The microPCMs property of compact is a focus factor to use in building material.
Obviously, the factors of the mass ratio of core and shell, the average diameter and mass of emulsifying agent affect the thickness of shell, also obtain different penetration property.
But mechanical properties of double-shell samples did not change much comparing to each other.

In Taguchi design of experiments, L9 orthogonal array was employed to investigate the effect of control factors on mechanical properties such as tensile and flexural strength.
Based on the literature and preliminary works, the following control factors were identified as key factors which affect the dispersion of nanocomposite.
Table 3: Contribution ratio for Tensile Strength Mechanical Properties Factors Mixing Speed (S) Mixing Hour (T) Blade design (B) Wt % of clay (C) Tensile Strength (MPa) Contribution Ratio (%) 17.13 11.37 44.98 26.52 Cumulative Contribution Ratio (%) 17.13 28.50 73.48 100 From this table, Blade design, % of Clay and Mixing speeds are identified as significant factors affecting tensile strength.
From this table, blade design, % of Clay and mixing speeds are identified as significant factors affecting flexural strength.
The blade design was identified as the main control factor to improve the properties.

Microstructure and mechanical properties of laser beam welded AA7021Aluminum alloy Wang Feng*, Xiong Baiqing, Zhang Yong’an, Liu Hongwei, Li Zhihui, Li Xiwu, Xia Fengbin, State Key Laboratory for Nonferrous Metals and Process, General Research Institute for Nonferrous Metals, Beijing 100088, People’ Republic China *E-mail: wfbs@263.net Keywords: Laser beam welding, Microstructure, Mechanical property, Al-Zn-Mg alloy.
Tensile properties of the joints were obtained by testing flat transverse tensile specimens, and the results indicated that tensile strength of these welds approached 76.8~77.3% of the base metal.
Joining is one of the key factors required for industrial application of aluminum alloys[3].
Medium strength Al-Zn-Mg alloys have a good combination of properties making them suitable for many automotive applications where high specific mechanical properties are required.
The microstructure and mechanical properties of an AA7021 alloy laser beam welded material were investigated by a detailed evolutions of the microstructures in various zone, and tensile strength of the joint.

Whereas there are some visible interface defects to affect the mechanical property and engineering application of FSW overlapped structures.
Meanwhile, the study can improve the mechanical properties and weld quality.
The influences of tool rotational speed and travel speed on joint mechanical properties were also investigated, in terms of hardness, tensile and fatigue properties.
And the two critical factors influencing the tensile strength of overlapped joints are the EST of the material and the sheet interface sharpness.
Factors affected the properties of friction stir welded aluminum lap joints.

The mechanical properties and the residual stress were determined using the length dependence of the resonance frequencies of cantilevers and beams.
They largely affect the main MEMS/NEMS characteristics, the quality factor (Q) and the resonance frequency (fres) [3-5].
During device processing the mechanical properties of the epitaxially grown material can be altered [8, 9].
The reliability of the device design strongly depends on the proper knowledge of the mechanical properties of the materials involved in the MEMS/NEMS device.
In general, the softening of the mechanical properties is one of the possible effects of materials with reduced dimensions, because hardening can also occur.

Finally, the influence of the weight ratio (Cu/steel) on the mechanical and electrical properties was discussed.
The effects of various weight ratios on the mechanical and electrical properties of the composite are investigated.
Electrical Properties.
It can be inferred from Fig. 4(b) that the capacity of stiffness affecting the electrical resistance gradually decreases with the increasing stiffness and weight ratio.
Rodney, O, Bouaziz, Y, Brechet, Mechanical Properties of Monofilament Entangled Materials, Adv.

Joining of Molybdenum and Kovar is difficult because of difference in their physical and mechanical properties.
Various parameters affecting the vacuum brazing process and factors affecting joint strength are discussed.
Factors affecting the joint strength of brazed joints like external compressive weight, diffusion of filler material into the parent materials, surface roughness of parent materials, surface flatness have been discussed.
Brazing is a technique successfully used for joining metals with large difference in their melting points and mechanical properties.
Apart from the braze filler thickness , other factors affecting joint strength are surface roughness of parent materials, flatness of surfaces to be brazed, effect of external dead weight over the brazing assembly and joint design.

The influence of the oxide inclusions on the microstucture, properties and the Heat-affected-zone (HAZ) toughness of low alloy steels has been investigated.
The microstructure and mechanical properties of base metal and samples undergoing welding thermo-simulation were also analyzed.
Furthermore, prior austenite grain size is also an important factor affecting the nuclei of IAF [4-5].
Experimental Results (a) (b) Fig.1 The microstructure of steels No.1 (a) and No.2 (b) The microstructure and mechanical properties of base metal.
The mechanical properties for both steels are listed in table 1.

Mechanical Properties of Aerogels : Brittle or Plastic Solids?
The mechanical properties rapidly increase with aerosil %; the aerosil particles strengthen the structure by a factor 5.
Another way to increase the mechanical properties is the sintering.
During these treatments the structure of the aerogel is modified and the mechanical properties are enhanced.
Such models seem attractive to describe the mechanical properties of gels for several reasons.