拉应力及Al、Cr在晶界的偏聚对无取向电工钢晶粒长大的影响  

Effect of stress and grain-boundary segregation of Al and Cr in the nonoriented electrical steel on grain growth

作　　者：周顺兵[1] 姚中海[1] ZHOU Shunbing YAO Zhonghai(Research and Development Center of WISCO, Wuhan 430080,Chin)

机构地区：[1]武钢研究院,湖北武汉430080

出　　处：《武钢技术》2016年第5期43-48,共6页Wisco Technology

摘　　要：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 rules of grain growing procedure,texture and grain boundary transformation in the nonoriented electrical steel containing Al or Cr under applied stress during grain growth were investigated by EBSD,and the segregation behavior of Al and Cr at grain boundary has been analyzed. The experimental results have shown that the growth rate of { 111} 〈112〉,{ 111} 〈110〉and { 001} 〈100〉 component have changed in the samples containing Al or Cr under applied stress during grain growth. but the atomic radius interval between Al and Fe is larger than that between Cr and Fe,so Al has a more effect on the change rate of these texture component than Cr. for these texture components during grain growth. Al or Cr and stress applied in the steel also affect the change rate of frequency（ %） of large angle misorientation grain of these texture component.

关 键 词：无取向电工钢 应力 Al和Cr 织构 晶界 

分 类 号：TM275[一般工业技术—材料科学与工程]