G115钢在650℃下时效0h后的大小角晶界频率及数量密度，小角晶界（＜10°）频率为63.7%，大角晶界频率（10~60°）为36.3%，小角晶界数量密度为1.03 μm/μm²，大角晶界数量密度为0.42 μm/μm²。

The frequency and number density of large and small-angle grain boundaries of G115 steel after aging at 650℃ for 0h, the frequency of small-angle grain boundaries (<10°) is 63.7%, the frequency of large-angle grain boundaries (10~60°) is 36.3%, and the number of small-angle grain boundaries The density is 1.03 μm/μm2, and the number density of large-angle grain boundaries is 0.42 μm/μm2.