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Many processing conditions and materials properties affect the microstructural evolution and mechanical behavior of the produced joints.
In the present study, a broad range of processing parameters affecting the fatigue properties of FSWed joints has been evaluated.
The RS were measured in longitudinal direction, being the one affecting the crack tip stress field.
Such factor is fundamental in analyzing the effect of welding conditions on consequent mechanical properties.
Effect of welding parameters on mechanical and microstructural properties of AA6082 joints produced by friction stir welding.

The Influence of Processing Parameters on Mechanical Properties and Microstructure of Welding Zone for Ti3Al-TC4 Dual Alloy Zekun YAO 1,a, Xinmin LIANG 1b，Hongzhen GUO 1,c, Wangbin 1, Guohui LI1 , Zhiqing QIAO 1 Hui ZHANG 1 1 Northwestern Polytechnic University，Xi'an, China a yzekun@nwpu.edu.cn, bchm96@sohu.com, czhguo@nwpu.edu.cn Key words: dual alloy processing parameter variance analysis microstructure Abstract It has been investigated that the influence of processing parameters on mechanical properties of weld zone for Ti-24Al-15Nb-1.5Mo and TC4 dual alloy welded by electron beam in vacuum.
The results shows the remarkable influence factors are heat treatment regime and deformation for yield strength of welded dual alloy samples at room temperature tensile test, and the remarkable influence factor is forging temperature for the elongation in tensile test at 500ºC.
The microstructure and mechanical properties of this alloy are affected by processing conditions.
The objectives of this investigation are to examine the influence of processing parameters on microstructure and mechanical properties of the welded Ti-24Al-15Nb-1.5Mo/TC4 dual alloy through near isothermal forging, and to research the practicability of processing this sort dual alloy.
A L8 (2 7 ) orthogonal experiment table of four factors and two levels had been designed.

Factors and Levels Levels Factors Cement [kg/m3] EPS% of TAV W/C 1 410 60% 0.45 2 515 70% 0.50 3 594 80% 0.55 Table 2.
Table 4 summarizes the thermal and mechanical properties of each EPAC mixture.
The type of aggregates, moisture content, density, and temperature are all factors affecting the thermal conductivity of concrete [12].
Ranking of Factors Effect on Density.
Hasan, A study of factors affecting the flexural tensile strength of concrete, J.

Therefore, to explore the factors which affect the bonding strength and bonding strength variation is very important for improving the bonding process and the bonding performance.
A lot of research has been done on properties of the aluminum alloy bonding joints at present.
Different surface treatments can affect bonding properties because of the change on aluminum alloy surface cleanliness and roughness and surface chemical structure.
Steel and aluminum alloy plates glued joints mechanical properties of finite element analysis [J].
The impact of shear strength of Layer size of the aluminum-lithium alloy single-lap adhesive bonded joints [J].Materials for Mechanical Engineering, 2012 (36) :85-88 [8]Xiaohui Liu,Guangyan Zhang,You Wang.the various factors of Affect the bonding surface characteristics[J],1997(4):224-226

Apart from cast defects, the morphology of eutectic silicon and intermetallic phases (Fe- and Cu-rich phases) are also important factors which have an influence on the fatigue properties of Al-Si cast components.
Microstructure factors that have an influence on mechanical properties were described in previous studies [1-2] and therefore their effects on fatigue properties were studied.
But according to Moreira [4] the morphology and the size of the second phases are important factors causing stress concentration in the a-matrix around them.
Based on previous studies of the microstructure and mechanical properties [8] were defined as the optimum mode for heat treatment of secondary AlSi9Cu3 cast alloy - solution treatment at a temperature of 525°C with a holding time of 4 h.
Porosity can by detrimental to fatigue properties, mainly solidification shrinkage (Fig. 1b).

Mechanical properties, such as tensile strength, hardness, and ductility, are influenced by factors such as microstructure, and defects introduced during the additive manufacturing process.
The mechanical properties of the CS wire are presented in Table 2.
Mechanical properties of the carbon steel wire.
Table 5 presents the mechanical properties of the WAAM carbon steel parts.
Mechanical properties of the WAAM CS with different printing parameters.

The specimens were machined from the sintered compacts for the evaluation of the mechanical properties.
Mechanical properties.
Porosity, pore shapes, pore size may affect the mechanical properties of propous materials.
Porosity and bonded area of perticles is considered the major factors controlling the strength.
Mechanical properties of porous titanium specimen.

Comparison tests of needles made in abroad and domestic on chemical composition, microstruture , mechanical property and so on, the main influence factors of the wear resistance were analysed.
So the structure and properties of needles will affect the efficiency and the quality of the knitting machines.
Needles which are the main looped pieces, especially the most widely used latch needle, is faced a new challenge in mechanical properties, structural size, surface process.
Except for the hardness index, the wear resistance is also relevant to material plastic and other factors[5].
As tool steel, the size, shape and distribution of carbide have been regarded as the important factors to W-1.

The effectiveness of such interaction is determined by the current density in the weld pool, where the physical properties of the aqueous medium significantly affect the interaction of magnetic and electric fields.
As a result, one can expect an increase in the mechanical properties of the crystal [9-17].
The dislocation structure is one of the determining factors of the strength and crack resistance of the metal [24-26].
References [1] Ryzhov R.N., Kozhukhar V.A., Maksimov S.Yu. and Prilipko E.A., Application of external electromagnetic actions for improvement of mechanical properties of welds in underwater wet welding, Paton Welding Journal. 11 (2004) 49-51
Martynyuk, Influence of parameters of longitudinal magnetic field on the structure and mechanical properties of welded joints of oil and gas pipelines, Avtomaticheskaia Svarka 9 (1978) 37-41

This research was study the effect of resistance spot welding process on physical properties.
Factors affecting the tensile shear and nugget size are the most welding current 10,000 amp., welding time 10 cycle and electrode force 1 kN. were tensile shear 7.13 kN. and nugget size maximum 6.75 mm.
Because if the selection condition on access to inappropriate, would have affected the mechanical property which reduced the strength of work pieces.
The experimental design of full factorial design to be the main factors effectors affecting significantly.
Factors affecting the tensile shear and nugget size are the most welding current 10,000 amp., welding time 10 cycle and electrode force 1 kN. were tensile shear 7.13 kN. and nugget size maximum 6.75 mm.