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Moreover, the input line energy increases, increased weld width, resulting in heat zone of welded seam grains become crassitude, carbide and the low melting point eutectic material is relatively increased, so that reducing the mechanical properties.
Table 1 Chemical composition of experiment materials Materials C Si S P Mn Ni Cr Ti Fe Austenitic stainless steel 304 0.07 0.66 0.017 0.032 0.093 8.1-10.10 17.0-19.0 0.39 other Table 2 Main laser welding parameter Serial number number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Power (W) 400 500 500 500 500 500 500 500 500 500 500 500 500 500 500 Pulse width (ms) 3 3 3 3 2 2 3 3 3 3 1 2 3 4 5 Frequency (Hz) 8 10 10 10 8 8 9 9 8 14 10 10 10 10 10 Welding speed (mm/min) 60 30 60 90 30 200 10 30 30 30 200 200 200 200 200 Defocus (mm) -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 Firstly, the macro-morphology of the weld was observed to determine the welding quality good or bad.

Suppose the bubble numbers in the slurry with a depth hc is n0, the remained bubble number after filling the mold cavity with a depth hm is ne, the remained bubble ratio formed in the workpiece is defined as the following formula(19)
Flemings, Grain refinement of an aluminum alloy by introducing gas bubbles during solidification, J.

According to a large number of previous experimental data[4-6], it is shown that the decarburization leads to a decrease in the creep properties, the severe carburization leads to the low-temperature embrittlement of materials, and the internal oxidation leads to the surface embrittlement.
A good deal of columnar grains was formed on the surface of the corrosion layer, and the scale was continuous and dense, suggesting that the corrosion resistance is good.
A large number of holes on the surface reduced the protective capability of Inconel 617 scale; 4).

The microstructure of aluminum can be seen using a microscope as shown in Fig. 4, from the microstructure it is obtained: · Grain size and shape · Phase distribution contained in the material, especially aluminum · Impurities in the material Fig. 4 Olympus microstructure tester Compressive strength testing.
The percentage of constituent elements, in the AA (Aluminum Association) standard, this type of aluminum alloy is categorized into Aluminum Alloy Casting Alloy, with a serial number close to 3xx.x (Al-Si-Mg).
Based on the percentage of constituent elements, in the AA (Aluminum Association) standard this type of aluminum alloy is categorized as an aluminum alloy Casting Alloy, with a serial number close to 9xx.x (Al-other elements).

Fig. 2(a) exhibits a SEM panoramic image of the FeS2 products which consisted of a number of microspheres, and the spheres have good uniformity.
The nucleation mechanism of the precursor liquid as a sulfur source is as follows: S2- reacts with S0 forming S-, then Fe2+ reacts with S- to rapidly form a vast of FeS2 crystal nucleuses and quickly generate a large number of jelly-like substances.
Kříbek, The origin of framboidal pyrite as a surface effect of sulphur grains, Mineralium Deposita 10 (1975) 389-396

Because of the error of dynamic test itself is great, even if the strain rate is known, failure strain value under the certain condition is still only refered by relevant information regardless of temperature and is more relied on experience or large number of experimental results to correct the value.
The model is composed of eight nodes hexahedron units; the number of units is about 3 million, as shown in figure .2.
At that time, severe plastic deformation occurred, steel grain were badly crushed, or even broken, and it was deleted till the equivalent strain up to 0.065 according to failure criterion. 

This system contains many homologous compounds of the formula Znk In2Ok+1 (k=integer number) described as a structure with a k number of ZnO layers sandwiched between two In2O3 layers [9].
The increase in crystallite size may be due to neighboring small grains joining together by melting their surfaces, resulting in large particles forming as the Ts rises [20].

The absorbance indicated the number of free amino groups available for reaction with ninhydrine reagent, and the difference in absorbancies between unmodified and acylated soy flours reflected the extent of acylation. 2.
Maple veneers were cut into 114.3 (grain direction) by 19.1 mm strips, with all wood conditioned at 22°C and 50 % relative humidity.
Assay of free amino group Although instrumental methods such as HPLC are currently used for determining compounds containing amino group, the simple and convenient ninhydrin method still possess several advantages because of no expensive equipment required and routine analysis of large numbers of samples[11].

The composition (grain size, processing, material form) of alumina ceramics plays an important role and looks to influence their behaviour.
Table 1 Constants of the materials used in the finite element analysis σc initial yield stress; C and P are the Cowper-Symonds strain rate parameters The experimental analysis showed that in most cases the ceramic tile can break in maximum eight parts along the total number of axes of symmetry, as shown in Fig. 17.
Using for the ceramic tile an average dimension of a finite element as 1.5 mm, it resulted a number of 20859 nodes and 16038 hexahedron finite elements; in between the eight parts (distance in between them of 20 µm) of the tile were defined 1148 points of "welding" - that is special boundary conditions - which are broken if the criteria of failure is fulfilled.

Aluminium, as a material used for drawn-parts, has both a number of advantages and disadvantages.
Minimum and maximum values of the cup thickness in the individual stamping operations operation number gmax [mm] gmin [mm] 1st operation 0.655 0.474 2nd operation 0.749 0.455 3rd operation 0.818 0.416 4th operation 0.768 0.416 Summary Thinning of the cup wall determines the strength and usefulness of the cup.
O'Donnell: Processing and properties of ultrafine-grain aluminium alloy 6111 sheet.