摘要
利用金相显微镜和EBSD技术分析研究了Fe-3.2%Si合金二次冷轧织构、(100)[001]立方取向晶粒形核、初次再结晶以及二次再结晶后立方织构的形成。结果表明,二次冷轧之后的织构主要为{111}<112>和{111}<011>,并存在少量的{112}<110>,同时在变形晶粒内部存在有接近{100}<001>取向的微区。冷变形晶粒内部各微区取向连续变化,并且逐渐向近立方取向靠近。冷变形晶粒内部立方取向的微区作为形核的核心,在退火过程中利用(100)晶粒低表面能和γ→α相变最终发展成为具有集中立方织构的柱状晶组织。
Texture of Fe-3.2%Si alloy second stage cold-rolled,nucleation of（100） grains,formation of cube texture after the primary and secondary recrystallization in the alloy were studied by optical microscopy and EBSD.The results show that the sheet second cold-rolled by a reduction of 77% contains the texture components mainly of {111}112 and {111}011,and small amount of {112}110,as well as the component with near（100） orientation in some micro-regions.The orientation of the micro-regions in a deformed grain gradually shifts into near cubic orientation,which can be as the nuclei in annealing process.During γ → α phase transition,columnar crystals with cube texture is developed in the appropriate annealing conditions due to the low surface energy of（100） and decarbonizing occuring in vacuum annealing.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2012年第5期70-75,共6页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金项目(50571058)
上海市重点学科建设项目(S30107)
关键词
铁硅合金
轧制退火
立方取向
形核与长大
Fe-3.2%Si alloy
cold rolling and annealing
cubic orientation
nucleation and growth
