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The objective of this study is to determine the factors affecting FSJ weldability of Al alloys as well as to determine optimum welding parameters for dissimilar welding of aluminum alloys.
Table.1 shows the composition and mechanical properties of alloy used.
Table.1 Chemical compositions and mechanical properties of Al6022-T4 and Al5052-H32 alloy Chemical compositions (wt)(%) Mg Si Cr Mn Cu Al AA 6022 0.6 1.0 - 0.08 - bal.
Mechanical properties Tensile strength (N/mm2) Elongation(%) Yield strength (N/mm2) AA 6022 260 30 145 AA 5052 230 8 195 Results and discussion Within the parameters used to control the dissimilar FSJ of Al5052 and Al6022, the most critical were tool rotational speed (rpm), dwell time (sec), and plunge depth (mm).
The weldment exhibit four distinct regions, namely: stirred zone (SZ), thermo mechanical affected zone (TMAZ), the heat affected zone (HAZ) and the initial base metal (BM).

Heat affected zone (HAZ) simulation using a thermo-mechanical testing device GLEEBLE 1500 is performed to study the microstructural evolution and changes in the mechanical properties in the different parts of the HAZ.
To study the influence of different weld thermal cycles on the microstructure and the mechanical properties, square specimens with dimensions 10 x 10 x 100 mm were used for the thermo-mechanical simulation on a GLEEBLE 1500.
This conversion takes into account the structure factors for the bcc and fcc crystal structures of the ferrite and austenite phases, respectively, the multiplicity for each peak, and the Lorentz polarization factor.
The mechanical properties of the different zones were obtained by mechanical testing of the simulated specimen.
A link between microstructure and corresponding mechanical properties could be drawn.

In the actual semi-solid die-casting production, the existence of several uncertain factors can impose an effect on the final product quality, which poses a challenge to semi-solid production.
Especially the existence of the latter can not only reduce the tensile properties but also affect the follow-up heat treatment.
We evaluated the non-filling defects, defect ratio and mechanical properties.
Due to various factors, the slurry of each mold has different viscosity, resulting in differences in filling ability, which affects the density at this stage.
The defect rate of castings affects their tensile properties, so they have the same important influence cases.

Based on the experimental results, the factors of improving the mechanical properties and corrosion resistance of the high-purity Mg as biodegradable material are briefly discussed.
The grain size and crystallographic texture should be considered to be the main influencing factors of corrosion rate of high-purity Mg in the NaCl solution [21,25].
Yang, The microstructures and mechanical properties of extruded high-purity magnesium, Mater.
Microstructure and mechanical properties of ultrafine grain ZK60 alloy processed by equal channel angular pressing, Mater.
Wang, Effects of grain size, texture and twinning on mechanical properties and work-hardening behaviors of pure Mg, Mater.

Material Properties and Natural Frequency of Stator Core of Large Turbo-Generator Yixuan Wang 1, a, Ying Wang 2,b 1 School of Mechanical Engineering, Xi’an Polytechnic University, Xi’an 710048, Shaanxi, China 2 School of Information Technologies, J12, University of Sydney, NSW 2006, Australia a wyingping886@126.com., b ywan7763@uni.sydney.edu.au Keywords: Large Turbo-Generator, Stator Core, material Properties, Natural Frequency Abstract.
The material properties of stator core are mainly related to its laminated process and assembly as well as the operating temperature of turbo-generator.
Introduction The material properties of stator core, such as magnetic permeability,electrical conductivity ,thermal conductivity, Young modulus, Poisson ratio, mass density, etc., are key factors affecting on its dynamic characteristic besides dimensions and shapes.
In paper [1, 2], a new nonlinear anisotropic model for soft magnetic materials is proposed for determining electro-magnetic and mechanical properties.
Generally, the material properties of stator core is non-homogenous anisotropic , changes with operating temperature and uncertainty variables.

China ahometownplant@163.com, c1004300131@qq.com, bhuili@163.com, dchunyuhua@163.com, elu_xianjun@163.com *corresponding author Keywords: Foam cement, Influencing factors, Properties Abstract.
The authors discussed the effects on the properties by key factors like water/cement ratio, foaming agents, foam stabilizers, accelerator and fibers of foam cement objects.
Moreover the physical and mechanical properties of it could fix the industry standards JC/T266-2011 foam cement.
Effect of accelerator on properties of foam cement. 
Effect of fiber on properties of foam cement.  

Comparison between Modelled Influence of GMAW Parameters and Corresponding Mechanical Properties of Group 1 and 2 According to ISO/TR 15608 Steel T Joints Aurel Valentin Bîrdeanu1,a*, Alin Constantin Murariu1,b, Horia Dașcău1,c, Iuliana Duma1,d 1National R & D Institute of Welding and Material Testing - ISIM Timişoara; Address: 30, Mihai Viteazu Blvd., Postal Code 300222, Timisoara, Romania avalentinbirdeanu@yahoo.com, bamurariu@isim.ro, chdascau@isim.ro, diduma@isim.ro Keywords: GMAW, HSLA steel, factorial design, data processing, welding parameters, mechanical properties Abstract.
Figure 1 Joint geometry, s=4 mm, a=5.4 mm, a1=0.3 mm A full factorial experiment, using robot welding, with four influence factors (IF) and three replicas in the center point [19] was designed for the welding trials of the two joints, the values of the selected influence factors (welding current – Ia, welding voltage – Ua, welding speed – vs, free length of the electrode – l) are presented in tables 5 and 6 respectively.
The influence four important process parameters, i.e. the welding current, the welding voltage, the welding speed and the electrode’s free length factors onto the hardness variations in the joint was studied and mathematical correlations were determined.
R.: Studies on welding parameters and prediction of imperfections and mechanical properties in the GMAW process, Welding & Material Testing – BID ISIM, 2 (2019), pp.3-7
Effect of heat treatment temperatures on microstructure and corrosion properties of inconel 625 weld overlay deposited by PTIG.

Study on the Online Detecting Technology for Partial Discharge of Power Equipment with Mechanical Properties Guojin Chen1, a, Ming Xu1, b, Tingting Liu1, c, Jing Ni1, d, Dong Xie2 and Yanping Zhang2 1School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China 2Hangzhou Kelin Electric Power Equipment Co., Ltd, Hangzhou, Zhejiang, 310011, China achenguojin@163.com, bxumzju@163.com, cliutingting817@163.com, dnijing2000@163.com Keywords: Online Detecting Technology, Partial Discharge, Electrical Power Equipment, Mechanical Properties, Acoustic Emission, Ultra High Frequency.
That improves greatly the mechanical and electrical properties of the transformer.
Introduction The partial discharge is the main cause of the insulation deterioration, is the important sign and manifestation of the insulation deterioration, and is also the important factor of the insulation failure for the power equipment.
So it affects the accuracy of the subsequent fault location.
That improves greatly the affect of the harmonics in the secondary side on the electricity grid in the primary side, and makes the no-load loss down by 50%, and the load loss down by 15%.

Intrinsic factors refer to ones that are decided by the components' properties, such as their material, the structure design parameters etc; while the latter, environmental factors, are not decided by the products or system but the environment.
Intrinsic factors 1) Material properties.
Environmental factors 3) Lubrication properties.
The set of evaluation factors includes all possible factors that may affect the evaluation target.
As described in section "Tribo-maintainability factors", tribo-maintainability evaluating factors are selected as: 1u = Material properties, 2u = Surface properties, 3u = Lubrication properties, 4u = Working conditions, 5u = Contact conditions, 6u = Tribological condition monitoring.

Thermomechnical processing and controlled rolling of microalloyed steel sheets are affected by several factors according to the final properties of product.
To create the high mechanical properties, a uniform and fine-grain structure is necessary in hot rolled final products.
The main goal of hot rolling is to achieve required shape specifications, but careful control of deformation conditions at high temperatures can also have beneficial results in terms of microstructure and hence the mechanical properties [1,2].
To create the high mechanical properties, a uniform and fine-grain structure is necessary in hot rolled final products.
To create the high mechanical properties, a uniform and fine-grain structure is necessary in hot rolled final products.