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曾就铝对以硫化锰为主要第二相的晶粒取向3%Si的硅钢的热轧组织和织构、初次再结晶、二次再结晶和磁性等的影响进行研究,发现钢中酸溶铝量在0.007—0.040%范围,板坯热轧前再加热温度降到1250℃时,成品磁感B_(10)仍能达到18000高斯。酸溶铝量超出这一范围时,加热温度的降低,引起磁感B~(10)的急剧下降。热轧板板厚中心层的形变组织也随酸溶铝量的变化出现差异。热轧组织的这种差异使随后初次和二次再结晶组织相应发生变化。铝在钢中的作用可追溯到板坯热轧前的历史,但主要似乎是影响材料热轧时的形变,第二相的动态析出和动态再结晶过程。铝在晶粒取向3%Si-Fe中的作用机理有待进一步研究。
The effect of aluminum on hot-rolled microstructure and texture, primary recrystallization, secondary recrystallization and magnetic properties of silicon steel with 3% Si grain oriented with manganese sulphate as the second major phase was investigated. It was found that acid dissolution When the amount of aluminum is in the range of 0.007-0.040%, the magnetic induction B_ (10) of the finished product can still reach 18000 Gauss when the reheating temperature of the slab is reduced to 1250 ℃ before hot rolling. When the content of acid-soluble aluminum is beyond this range, the decrease of the heating temperature causes a drastic drop in the magnetic induction B10. Hot-rolled plate thickness of the center of the deformation of the organization also changes with the amount of acid-soluble aluminum differences appear. This difference in the hot-rolled structure changes the subsequent primary and secondary recrystallized structures accordingly. The role of aluminum in steel can be traced back to the history of slab prior to hot rolling, but primarily appears to affect the deformation of the material during hot rolling, the dynamic precipitation of the second phase and the dynamic recrystallization process. The mechanism of action of aluminum in grain-oriented 3% Si-Fe remains to be further studied.