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In short, the progress of those experimental results, in other words, to point out here that the assessment of the mechanical and metallurgical properties of welded structures studied welding conditions and chemical composition of tailor-welded weld toughness. Figure 5 - (a) through the thickness of the transition temperature of the weld welding model to determine the ductile-brittle transition behavior; (Fe306) in the given welding conditions. (B) The ductile-brittle transition behavior of welded joints by welding model identified; (IF-Ti, t = 0.8mm) in the case of welding conditions given sample structure (base metal, heat affected zone and weld) ductile-brittle transition temperature. By the welding of ductile-brittle transition behavior model to determine the weld; HR, Q = 5.5kW), welding speed and the influence of thickness on the ductile-brittle transition temperature. Because the battery of cell phone jammer is recyclable to avoid the battery waste and environment pollution.
Figure 6 (a) Fe360 steel and low temperature experiments the surface of the organizational structure currently displayed in the gap section of the fracture morphology. The tissue surface distribution of the uniform size of the ferrite. Fracture the specimen smooth, fracture mode was ductile fracture at high temperatures. This is a typical result, shown in Figure 6 (b) in the IF-Ti steel test sample performance of intergranular fracture, some specimens in the cleavage plane was broken, on the parent material can also see two times branched intergranular fracture. The surface of the organizational structure on the left after impact fracture experiments. (B) IF-Ti steel microstructure, surface organizational structure on the left after impact fracture experiments. (C) (d) (e). And at the same time, these kinds of batteries of cell phone jammer are not very easy or convenient for the customer to get.
The test results show that the practical way (new ductile-brittle transition temperature) are conducive to the assessment of tailor welded blanks in the ability to resist fracture under dynamic load. Mechanical and metallurgical properties of the test here, to facilitate the assessment of welding conditions or the chemical composition of the laser welded joint toughness behavior. Evaluation of microscopic defects in manufacturing, especially when the product is the base metal, heat affected zone, weld needs to be given to the welding conditions and material properties, this is a very practical tool. This model is useful to distinguish between selection of steel producers; welding designer to select the welding conditions for the safe design and improve the reliability of welding is a simple but very effective method of operation. The battery of cell phone jammer can be used to charge both 16340 battery and 18650 battery at the same time.
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