利用设计的"原位"观察方法,在配备EBSD的场发射扫描电子显微镜中,对Q235碳素钢固定区域拉伸过程中的应力应变曲线上各个特征点进行EBSD试验,得到了Q235碳素钢与应力应变曲线各特征点相对应的晶粒取向图,为进一步研究该材料形变过程中的组织提供了基础数据.由于形变过程中位错开动、运动及相互作用等因素,大角度晶界在总晶界中的比例在应变1%处达到一个峰值.
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