Mg element can reduce the number, size, distribution and morphology of inclusions in steel such as NM450 steel plate sheet. Micro Mg can improve the size and distribution of carbides in bearing steel.
The strengthening mechanisms in metals mainly include solid solution strengthening, dislocation strengthening, fine grain strengthening, and second phase (precipitation and dispersion) strengthening.
Laser deep penetration welding is to radiate a high-power density laser beam onto the welding material. The material converts the absorbed light energy into heat energy, and is heated to evaporate to