中文摘要：

利用原位EBSD技术研究了铁素体不锈钢形变过程中组织和晶粒取向的演变过程。结果表明：随形变量的增加,小角晶界（1°〈θ〈2°）显著增多,大角晶界（θ〉10°）保持相对稳定。当形变量〈6%时,{100}〈011〉取向晶粒在轴向拉伸过程为稳定取向,而{111}〈uvw〉晶粒其拉伸轴取向向〈100〉-〈101〉连线方向转动一定角度（12°〈α〈20°）。具有不同转动特点的晶粒之间相互作用,使晶粒向着晶面法向转动,形成粗糙表面。

英文摘要：

Microstructure and grain orientation evolution below 6% tensile deformation of ferritic stainless steel were investigated by means of ＂in-situ＂ EBSD.The results show that low angle grain boundary（1°θ2°） was enhanced rapidly and high angle grain boundary（θ10°） remained stable.{100}011 oriented grains hardly changed orientation but tensile direction of {111}uvw oriented grains rotated about 12° to 20° toward 100-101 line in inverse pole figure.Grain scale roughening was caused by rotation between neighboring grains with different orientation.