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Meanwhile, some detrimental effects, thermal residual stresses, and heterogeneous microstructure could be associated with the dissimilar metal joints owing to the variations in melting point temperatures, different chemistry, different mechanical strength, and physical properties, such as thermal conductivity, and coefficient of thermal expansion [12].
This phase structure has undergone a significant promotion upon HT.
A typical martensite lath structure is revealed in the FZ.
The welds exhibit a full martensite structure with LCS dilution ≥ 30%.
Interestingly, the predicted weld structure is predominantly martensite, as shown in Fig. 2(d).

However, network structure of MgH2 and MgCu2 formed by the hydrogenation of Mg2Cu cannot be seen.
From the experiments of Mg-Cu diffusion couples [13, 14], it is expected that core-shell like structures can be formed during heating process [8, 11].
Constituent phase of the core-shell like structures are Cu, MgCu2, Mg2Cu, and Mg in the order from the core to the shell.
In case I, Mg2Cu is hydrogenated following the reaction of peak 6 and forms a network structure of MgH2 + MgCu2 as fig. 5(a) [11].
Kikuchi, The effect of initial structures of Mg/Cu super-laminates on hydrogen absorption/desorption properties, J.

Currently, the aircraft fuselage is a riveted structure, made mainly of duraluminium alloys such as: D16, 1163 and AA2524.
A negative factor is also the poor weldability of duraluminium alloys, which prevents the manufacture of welded structures.
Replacing riveted fuselage structures with lighter welded ones will result in a weight gain of 20–30 %.
The structure of the alloy was studied using metallographic microscope (Carl Zeiss, Germany).
Images of the Al alloy structure obtained using metallographic microscope.

The structure of the obtained polymer can be represented as follows: where R= м-NO2.
According to laser measurements, the polymer obtained in a doped form had a loose globular structure with various sizes.
It is shown that the polymer synthesized under the found optimal conditions has a globular structure, the size of which is 70-150 microns.
Tager, Physical chemistry of polymers, Scientific world, Moscow, 2007, pp. 76-150
Synthesis methods, polymer structure, Polimer Sci.

Effect of Cooling Rate, Tungsten Fiber Addition and Annealing on Deformation and Mechanical Properties of Zr-Based Bulk Metallic Glasses Under a Nanoindenter SI Yi 1,a * 1Department of Applied Chemistry, Liaoning Petrochemical Vocational and Technology College, China asiyi9555@126.com Keywords: Zr–based bulk metallic glasses; nanoindention; deformation and mechanical properties; cooling rate effect ;annealing effect; tungsten fiber addition effect; plasticity and mechanism Abstract.
The structure of samples detected by X-ray diffraction pattern (XRD) using Cu Kα all consisted of amorphous structure.
There is no grain size or grain boundary in amorphous structure in which the atoms arrange in a random manner and compact packing as possible resulting in the form of compact random packing structure.
The mechanical properties of BGMs depend on the compactedness of the structure to a large extent, which is determined by the components and cooling rate (V) of the samples of BMGs during quenched.
(4) The contactedness of interior atomic-arranging, average freedom volumes and ordered structure of Zr-based BMG are the nature factors affecting their deformation and mechanical properties under a nanoindenter.

The thermal and chemical stability of these bonds are hypothesized to be determined by the nanostructure and molecular structure within the gel phase [1, 5].
As a result, the crystal structures appeared in XRD pattern with high intensity among background of amorphous phases in the ash-based geopolymer material.
Microstructures of the geopolymer-based material (sample of MixGeo6) had changed with appearance of new structure dissolved in background as shown in Figure 4.
The porous structures of alumino-silicate have existed with high concentration.
Davidovits, Geopolymer chemistry and application, 3rd editon, Institute Geopolymer, France, 2011

Saputri1 1Department of Chemistry, Faculty Mathematics and Natural Sciences, Indonesia Islamic University, Yogyakarta, 55584, Indonesia aallwar@uii.ac.id Keywords: Composite, Palm Oil Shell, AC/ Fe3O4, Potential-Magnetic Abstract.
Fig. 3 Morphology structure of composite with magnitude 4000x zoom.
Based on the IUPAC classification the plot of isotherm exhibit types I corresponding to micro porous structure.
The result showed that palm oil shell has amorphous-like structure phase and its surface area is 8.05 m²/g.
The composite of Fe3o4/activated carbon has monolayer attributing of micro porous structure.

It appears, that hardenability is one of the key factors in achieving a "dual-phase" or "multiphase" structure particularly in the as rolled product.
Guidance for the design of thermomechanical controlled processing pass schedule for producing a fine and uniform austenite structure prior to the phase transformation was provided.
Structure of austenite grains after deformation 900 ºC/24% and cooling 60 ºC/s; sample etched in hot picric acid Austenite grain growth was restricted by precipitated particles when deformations 900 ºC/24% + 860 ºC/20% were applied causing further grain refinement Fig. 6.
Structure of austenite grains after deformation 900 ºC/24% + 860 ºC/20% and cooling at the rate 60 ºC/s to room temperature; sample etched in hot picric acid 0,05 0,2 0,8 4 21 110 Area, µm2 Fig.7.
Lis: Materials Chemistry and Physics, Vol.81 (2003) p. 466-468

Co(OH)2 materials are attractive in view of their layered structure with large interlayer spacing, their well-defined electrochemical redox activity and possibility of the enhanced performance through different preparative methods [14,15].
Among the existing synthetic approaches to the Co(OH)2 materials, electrochemical techniques are of great interest due to their unique principles and flexibility in the control of the structure and morphology of the film materials [16-18].
Fig. 1 (a) shows that nickel foam has 3 dimensional, cross-linked grid structure, with uniform rough surface.
The unique nanoflakes porous structure can be maintained after the electrochemical properties tests (Fig. 1 (c)).
This might be caused by the films nanoflakes structure, allowing better access to the electrolyte, and thus increased electrochemical activity.

Shimomura 2 1 Institute of Nuclear Chemistry and Technology, Dorodna16, 03-195 Warsaw, Poland 2 National Institute of Material Science, Namiki I-1 Tsukuba, Ibaraki 305-0044, Japan Keywords: silver clusters, sodalite, EPR Abstract.
Result and discussion Structure of sodalite framework.
Materials with a sodalite structure, while not generally considered as being in the zeolite family, are very closely related.
The sodalite structure is chemically highly adaptable in terms of substitution in both the framework and cubooctahedral interstices (ionic sites).
The frameworks structure is presented in the Figure 1.