Effects of AlN on the Primary Recrystallization Textures in Cold-Rolled-(110)[001]-Oriented Single Crystals of 3% Silicon Iron

Abstract

Cold‐rolled‐(110)[001]‐oriented single crystals of 3% silicon iron containing AlN in solution develop a doublet $\text{{111}\hspace{0.17em}〈110〉}\mathrm{-oriented}$ primary recrystallization texture consisting of grains with diameter of 0.5 to 1 mm after anneal at 550°C for 40 h followed by anneal at 1200°C. At the first anneal, very fine needle‐like AlN precipitates, while (110)[001]‐oriented primaries begin to originate at the surface of the sheet. At the heating process of the subsequent anneal, doublet $\text{{111}\hspace{0.17em}〈110〉}\mathrm{-oriented}$ primaries originate at the middle of the sheet, and then grow at the expense of (110)[001]‐oriented primaries. It is proved that very fine needle‐like AlN precipitated after cold rolling is found to have a great effect on these primary recrystallization phenomena.