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Pre-straining and welding procedures and subsequent mechanical testing.
The molten zone of the RSW joints between the DP steel sheets consists mostly of martensite, lower bainite and retained austenite, with a much higher hardness than the base metal (about 430 HV), and with intermediate properties in the Heat Affected Zone (HAZ).
Even if neither ferrite nor austenite are able to exhibit their full ductility properties, due to a local situation of constrained ductility, [20] austenite is definitely more ductile than ferrite and induces larger elongations-to-fracture in the as-fabricated Q&P steels, as compared to DP steels.
Barbier, High manganese austenitic twinning induced plasticity steels: a review of the microstructure properties relationships, Current opinion in solid state and materials science 15 (2011), 141 – 168
Pilkey, Peterson's stress concentration factors, Wiley (2008)

The basic design ideas of load-bearing microcellular foam concrete product As the building load-bearing material should have a certain strength and good durability, meet the requirements of mechanical properties of multilayer masonry structure wall, in the precondition of ensuring good thermal properties, concrete strength can reach about 7.5Mpa, good compressive strength, impact resistance, crack resistance, low shrinkage, low water absorption, fire retardancy.
Bearing porous concrete products forming process of preparation factors influence, and related.
Fig. 4 Porous concrete preparation pouring unit Fig. 5 Load-bearing brick cutting free group Conclusion (1) microcellular foam concrete load-bearing thermal insulation products with better physical and mechanical properties and good thermal performance, is the ideal substitute of clay brick
(2) cement material mixed with a certain amount of, using blast furnace slag lightweight aggregate and the use of microcellular foam agent can make concrete index can be obtained on physical and mechanical properties of bearing products required
Effect of sulphoaluminate cement and Portland cement on properties of composite cement [J].

Introduction Chemical mechanical polishing plays an important role in the precision and ultra precision processing technology.
Many scholars have made a lot of research work about the various factors which affect the processing quality.
Content includes: Basic information description library: the basic attributes material processed by CMP, such as type, hardness, melting point; a variety of grains’ basic properties ,such as hardness, melting point; Technological parameter library: the involved process parameters in CMP, such as polishing pressure, polishing speed, the properties of polishing pad material; different composition formula of polishing slurry; different grit size and composition formula.
The method of layering stratifies chemical property and the physical properties of the material respectively.
[4] Chi Xu: Study on the Friction-based Endpoint Detection in Chemical Mechanical Polishing.

Introduction Concrete is one of the most widely used building materials use of housing, municipal, bridges and other projects, a study on the composition and mechanical properties of concrete material deeply, has the important practical significance.
In the preparation of concrete, and the use of the solidification process, there are external environmental factors and different degrees of influence on the strength and deformation.
Compared to other materials, the mechanical properties of concrete materials more complicated.
These effects cause a variety of effects on the mechanical properties of concrete and deformation.
These factors will make concrete strength and deformation changes accordingly.

Its chemical composition is given in table 1 and the mechanical properties are gathered in Table 2.
Table 1 : Chemical composition of AISI 316L M25W steel (wt.%) Element C Cr Ni Mo Mn Wt.% 0.02 18.96 15 3.01 1.87 Table 2 : Tensile properties of AISI 316L M25W steel Young’s modulus [GPa] Poisson ratio Yield strength 0.2% [MPa] Ultimate strength [MPa] 194 0.284 346 644 100 mm Fig. 1.
Several studies carried out by the present authors [5,6] clearly showed that these two local mechanical parameters are strongly affected by the crystal orientation within the polycrystalline aggregate.
Hence, the initiation probability on a slip system can be expressed by: PFn=Pτa≥τath=1-exp-τaτ0m. (1) The normal stress is assumed to modify the initiation conditions by affecting the scale factor.
Moreover, the distributions of these two mesoscopic mechanical quantities are affected by the anisotropic elastic behavior.

The tensile properties of the joints were evaluated and correlated with the formation and presence of the FSW zone.
Using this process, it is possible to combine different materials having varying mechanical properties and corrosion-resistance characteristics, thereby achieving a noticeable reduction in cost and an overall improvement in manufacturing operations.
This was driven by the mechanical properties of the welded joints, such as, limiting tensile resistance.
Liu and co-workers [6] from their independent study concluded the tensile properties of the joints to be strongly affected by both the operating parameters and overall mechanical effectiveness of the FSW joints of the aluminum alloy blanks.
The technique has the advantage of producing welds with (a) low heat input, (b) a low degree of distortion, (c) a smaller grain size in the weld, (d) a narrow thermally-affected zone, and (e) properties closer to that of the parent metal.

Deflection change analysis of bending steel beam under high temperature and uniform loads Yulai Han, Xiaole Zhang, Dewei Jiao, Zuohua Cai, Yan Li College of Aerospace and Civil Engineering, Harbin Engineering University Harbin 150001 China Emai:zhangxiaole0816@126.com Keywords: High temperature, Uniformly distributed load, Bending beam, Deflection change Abstract: In case a fire occurs in a steel structure building, materials properties and mechanical properties have undergone great changes, especially bending beam, its force complex than other members, charged with an important role in the structure, when the fire broke out the other members also prone to failure.
Introduction The mechanical properties of steel materials is very sensitive to temperature, the threat of fire of high temperature on steel structure building is very large, extremely easy to cause the serious damage of structure.
Fig.1 (c) of the steel beam separator analysis diagram, point A from the left of the cross section of the internal force moment x is: the force moment at x of the cross section from the left of the point A: （1） External torque： （2） Balance equation： （3） Under high temperature the axial temperature internal force (stress) of steel beam: （4） Where: is the temperature at both ends of steel beams at elevated temperatures, is the internal temperature of the steel beams at elevated temperatures, is the elastic modulus of the steel at a high temperature， is the cross-sectional area affected by fire members, is a cross-sectional moment of inertia, is the thermal expansion coefficient of the steel.
Table 1 Material parameters change of steel structure in different temperature Time Temperature Span deflection Bending midspan moment Strength reduction factor Elastic Modulus () 20 91.4 13.8 338681.4 1.0 202.61 40 162.8 14.1 338866.5 1.0 198.49 60 238.2 14.5 339108.6 1.0 193.35 80 304.6 15.0 339438.4 1.0 186.77 100 373.1 15.8 339914.2 0.96 178.05 120 442.5 17.0 340660.8 0.85 165.93 130 476.2 17.8 341219.7 0.78 157.92 135 493.5 18.4 341575.0 0.73 153.23 140 508.9 19.1 342000.9 0.69 147.97 145 531.2 19.9 342520.7 0.65 142.04 150 552.6 21.0 343169.5 0.61 135.29 155 577.9 22.3 344002.1 0.56 127.54 160 585.3 24.0 345109.3 0.52 118.57 165 602.6 26.5 346653.9 0.47 108.04 170 621.3 28.6 347981.4 0.43 100.44 Fig. 3.With heating time deflection change of bending beam at high temperature Conclusion This paper studied calculation method of the bending members span deflection and bending moment at mid span based on elastic theory, and according to the specific examples, the

Since hydrogen bonds bear high mechanical strength and toughness, they are ideal biological material that can be widely used in drug sustained-release matrix, contact lens and anticoagulant material.
After the study of above factors experiments, ω (glutaraldehyde), m（PVA）:m（NaAlg）and ω(CaCl2) will be considered as three major factors (A, B and C) that affect the water content .
Table 1 Factors and their values factors values ω(glutaraldehyde) (%) A m(PVA):m(NaAlg) B ω(CaCl2) (%) C 1 0.75 9:1 1.5 2 0.85 8:1 2.0 3 0.95 7:1 2.5 Table 2 The results of orthogonal experiment L9(33) factors values A B C index Water content (%) 1 1 1 1 72.7 2 1 2 2 76.3 3 1 3 3 71.6 4 2 1 2 79.8 5 2 2 3 78.4 6 2 3 1 72.8 7 3 1 3 70.0 8 3 2 1 69.7 9 3 3 2 67.8 K1 220.6 222.5 215.2 K2 231.0 224.4 223.9 K3 207.5 212.2 220.0 k1 73.5 74.2 71.7 k2 77.0 74.8 74.6 k3 69.2 70.7 73.3 R（range） 7.8 4.1 2.9 Just as table 2 shows, among all the factors that affect water absorption rate, their right order from primary to the secondary should be A→B→C.
Based on extremum difference analysis , since the higher the better, so the biggest level in factors K1, K2 and K3 should be selected, and the combination is A2B2C2.
Zou, Research of calcium alginate polyvinyl alcohol preparation and anticoagulant properties of heparinized, J.

One important factor in the property formation of a wear-resistant coating is the condensation temperature.
The influence of the content of a second element (Мо) and acetylene (С2Н2) on the mechanical properties of coatings TiZrN (a) and TiZrCN (b) Formation properties of the coatings by changing their composition.
Multi-element coatings with the same system (for instance, Ti-Zr-N), produced with different plant layout, differ in composition, parameters and physical/mechanical properties (Fig. 1а) and therefore affect the efficiency of cutting tools differently [4,7].
The influence of Al content on the mechanical properties of TiZrAlN coatings The physical/mechanical properties of multi-element coatings depend on the design of evaporating cathodes, used in their application.
The mechanical properties of a coating can be altered by means of additional hardening treatment.

If a concentrated load, F, is applied to the free end of a rectangular beam, then the deflection of the free end of the beam, δ, is given as [2] δ = FL3 / 3EI Eq.2 Mechanical Properties of Cantilevers Cantilever is characterized by two basic mechanical quantities, the spring constant and the resonance frequency [5].
Define Material Material that we use to make a cantilever i.e. silicon dioxide, poly-silicon and nitride with their different elastic properties like Young’s Modulus, Poisson’s ratio and density.
Flow and mixing of the solution cause turbulence which directly affects cantilever deflection.
All these material have different properties, like Young Modulus, Poisson Ratio and densities etc. that is shown in Table.2.
Table 2: Elastic Properties of different materials.