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采用EBSD技术探讨了含Al、Cr无取向电工钢在拉应力作用下退火时晶粒长大过程中织构和晶界变化的规律,并分析了Al、Cr原子在晶界的偏聚行为。结果表明:在应力作用下晶粒生长时,Al或Cr的加入影响了该电工钢中主要织构组分{111}〈112〉、{111}〈110〉和{001}〈100〉的变化速率,尤其是原子半径与基体原子Fe相差更大的Al对这些织构组分的变化速率影响更大;在晶粒生长期间,Al或Cr的加入和应力的施加对这些织构组分的高取向差角度晶界频率的变化速率也有影响。
The EBSD technique was used to investigate the regularity of grain boundary and grain boundaries during the grain growth of Al, Cr non-oriented electrical steel annealed under tensile stress. The segregation behavior of Al and Cr atoms at grain boundaries was also analyzed. The results show that the addition of Al or Cr affects the changes of {111} <112>, {111} <110> and {001} <100> of the main texture components in the grain growth under the stress The rate, especially the Al, whose atomic radius deviates from that of the matrix atom Fe has a greater influence on the rate of change of these texture components; the addition of Al or Cr and the application of stress to these texture components during grain growth The rate of change in the frequency of the high orientation difference angle grain boundaries also has an effect.