Tests to determine the chemical properties.
Earlier we considered those types of tests that allow us to know the mechanical properties of metals. The metals also have important chemical properties. In fac...
Author: Ivan Perfilyev
The power supply classification features. The potential distribution in the arc. The welding arc properties (Part 2).
The studies have shown that the extent of the cathode and anode zones of the arc is very small: : lк = 1·10-5 см; lа = 1·(10-3…10-4) cm. Then the length of t...
The metal structure basis (Part 4).
The metal melting in a small area, leads to the appearance of shrinkage stress. Even if the external fixation of the sample was ensured during the heating and c...
The crystallization process mechanisms.
The crystallization takes place in two stages: in the beginning, nucleation center arise, and then nucleation center grow. There are two mechanisms for the nucl...
The isolation of the excess phase from the supersaturated solid solution (Part 1).
The metals in the solid state can only dissolve other metals and nonmetals. As the pressure and temperature change, the solubility changes, this leads to the se...