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Deformation Behavior in Pipe Production Process for New High Strength Microalloyed Steel Sadegh Moeinifar Department of Mechanical Engineering, Shoushtar Branch, Islamic Azad University, Shoushtar, Iran moeinifar@gmail.com Keywords: Forming, Steel, Charpy impact, Pipe, Mechanical properties, Microstructure, Fracture surface.
The influence of forming process on mechanical properties and microstructure of high strength microalloyed steel has been studied in this research.
Mechanical properties of line pipe steels can be anisotropic due to the plate manufacturing and pipe forming processes.
Anisotropy of mechanical properties studied for lower micro alloy steels.
Tensile properties and charpy impact fracture toughness were carried out according to ASTM E8 and ASTM E23.

The Composites are difficult machining materials which widely used in aerospace industry due to their excellent mechanical properties.
Introduction Composite materials such as fibre-reinforced plastics(CFRP) are extensively used in aerospace, automotive and civil applications due to their excellent mechanical properties.
These properties made them especially attractive for aerospace and civil applications.
The machinability of fiber reinforce plastics is strongly influenced by the type of fiber embedded in the composites and its properties.
tool Fixture Dynamometer Work tabel Strain gauge Acquisition card computer Cutting speed Fig.3 Schematic diagram of the experiment Table 1 Assignment of the levels to the factors Level 1 2 3 Revolution (rpm) 10000 14000 18000 Width of cut (mm) 1 3 5 Feed rate (mm/z) 0.01 0.02 0.03 Results and discussion The values of the milling force from the recorded data were show in table 2.

The 3-D solid elements are used in FEM model, and nonlinear factors of temperature-dependent material properties are considered.
Among these three categories of bonding agents, metallic bonding agents offer optimal mechanical and thermal properties and are the optimal bonding material in the fabrication of diamond tools.
Laser beams with high energy density and low energy input have the properties to function in such an application.
All of these phenomena become the important factors, influencing the quality of brazing structure and the usable capability.
The thermal physical nature of material properties changed rapidly with the change of temperature.

There is no complete and reliable testing standard for mechanical properties of brazing joints.
Chen [1] studied the mechanical properties of BNi-2/316L brazed joints by uniaxial stretching.
Analysis of Factors Affecting Peel Performance Effect of base metal thickness on peeling performance.
There is not enough wetting in the brazing angle, which results in poor mechanical properties.
Considering the factors of crack initiation and expansion, it is more appropriate to select the two-layer brazing filler metal.

The most important factors, which influence the mechanical quality of cast iron are: - Chemical structure - Metallurgical factors influencing crystallization - Treatment of the cake of fusion - Cooling conditions.
The crystallization and the properties of the cast iron, beyond chemical composition, are determined by further factors.
The number and size of the eutectic cells affect the mechanical properties and toughness.
During the laboratory and industrial tests we have developed a procedural control method that characterizes the nucleation factor of the melt, and we found the relation between the new control method and the mechanical properties and toughness.
Besides the chemical composition, the nucleus state has also a high effect on the mechanical properties of the cast iron.

The machine parts remanufacturing using surface engineering technology, not simply recovers the size of parts, but gives the new surface properties, the hardness, strength, corrosion resistance, even better than the original parts.
In material selection, we should consider the balance between material green property, material function and cost [2].
In the selection of parts materials, in does not affect the product performance, should choose recycled materials.
Economic recovery Economic recovery is parts materials can effectively recover the decisive factor.
Due to the mobile mechanical products are often composed of many different properties and composition of materials, products, waste elimination, how to effectively classify, separation and the parts and materials is an urgent problem to be solved.

With these properties, PV panels become more effective and maintain their high transmission for a long time.
Insights and perspectives were also given by focusing on the factors affecting the hydrophobicity and abrasion resistance of ARCs which may help future researchers to fabricate more efficient ARCs.
Accumulation of dust can behave as a barrier for incoming rays that can deteriorate the optical and mechanical properties of ARC.
This review will provide comparisons regarding previous studies to give explanations on how these additives affect the said properties of the ARC by changing their parameters.
The structure of films such thickness and porosity also affect the properties of the films.

The cut quality problems are caused by many factors, but the most important is the setup way of blade clearance.
The author combined theory analysis with practice, and find out the ration relationship between the shear blade clearance and the relevant factors like shear standards and shear property. then we make a best Mathematical model of the shear blade and also make a imitate testing of finite element.
The Influence Factors of Shear Blade Clearance Analysis and Its Best Mathematical Model to Establish[3].
This model not only applies to blade gap adjustment during cutting carbon steel, but also for high-strength steel and alloy steel shear gap adjustment, at the same time, taking into account the shearing temperature, shear material properties, the cumulative cut area (for the first time model proposed and was introduced, compared with the shear volume of tonnage or accumulation cutting quantity, it is more precisely) and other factors that affect the cutting quality.
And under the disk shear deformation characteristics of metal in the process, full use of the elements affecting the quality of cut, set up a simple Shear blade clearance adjustment model.

A research shall be conducted on the casting structure and mechanical properties at room temperature of this magnesium alloys and the effect of main alloying rare earth elements of Y, Gd and Nd is researched through analysis on the test data of mechanical properties.
The automotive drive system operating at high temperature and engine parts require the magnesium alloy to have good comprehensive mechanical properties at room temperature and stable mechanical properties at high temperature for long time.
In meanwhile, its mechanical properties are also guaranteed.
However, it is seen from Table 2 that Gd has an effect on the mechanical properties of alloy system but it is difficult to see the effect of Nd on the mechanical properties of alloy system since the design range of mass fraction of Nd added is small.
In meanwhile, after the casting second phase is discomposed, there is a large number of uniform and dispersed spot phases to precipitate which are an important factors of strengthening.

The chemical composition and mechanical properties of work piece is shown in Table I & II.
Fig. 2 FSW Experimental Setup The chemical and mechanical properties of AA2014 Alloy work piece are shown below.
Experimental Methodology 3 factors and 3 levels were selected in the experimental plan.
The average grey relation grade for each level of each factor are calculated and it was found that the optimal settings of the levels of factors A, B and C are A1-B3-C3.
Z.A.Luo, P.Xue and G.D.Wangm, “Effect of Rotation Rate on microstructures and mechanical properties of FSW Mg-Zn-Y-Zr Alloy Joints”, Journal of Material Science Technology 27(12),1157-1164 ,2011 [9] Pasquale Cavaliere, “Friction stir welding of Al alloys: analysis processing parameters affecting mechanical behavior”, procedia CIRP 11 pp 139-144,2013 [10] L.