Tensile test (Part 7)
At less plastic metals the differences in the characteristics which are obtained in areas of elastic deformation and plastic deformation can be not so noticeabl...
Author: Ivan Perfilyev
Macroanalysis by the fractures’ type (Part 1)
Fracture is the failure surface of a product or the whole piece of metall. According to cracks fracture cracks, holes, blowholes, stratifications, gaps, large s...
The assessment methods of the weld metal tendency to hot cracking (Part 2).
During the process of crystallization the weld metal continuously undergoes to lateral deformations, due to which the longitudinal crystallizational crack can b...
The line of pores in the welded seam.
The line of pores in the welded seam occurs because of low current, high weld speed and irregular gas feed or high humidity. The line of pores is a minor defect...
Growth of crystals (part 1).
Growth of nucleuses happens as a result of migration of liquid atoms to them. However, in a lot of cases, it doesn’t come to this one-faced atoms transfer. Atom...