The more pronounced ferrite refinement is achieved as carbon content increased. 碳含量提高有利於鐵素體晶粒細化。
The nano-hardness of both GBF and IGF increased with the increase of carbon content, but IGF's varied little. 且隨著碳含量的增高,晶界和晶內鐵素體的納米硬度都隨之升高,但各實驗鋼中晶內鐵素體的納米硬度相差不大。